In this article, I want to focus on purchasing an iMac for photography needs and what types of considerations one has to keep in mind when selecting one. I have had quite a few requests from our readers on this topic and many wonder what type of an iMac would suffice for photography work without breaking the bank. After doing quite a bit of research before purchasing my iMac and consulting with other Mac experts, I believe I found a couple of configuration options that are optimal for photography work for the next few years.
Before we go into the recommended configuration, let’s explore one of the most frequently asked questions – should one get an iMac, iMac Pro or a Mac Pro for photography needs?
Table of Contents
iMac vs Mac Pro
Without a doubt, the Apple Mac Pro “Cheese Grater” is an absolute beast. Running powerful, workstation-class Intel Xeon processors with up to 28 cores, up to 1.5 TB of RAM, up to 8 TB of fast PCIe NVMe flash SSD storage, up to 2x powerful GPUs and plenty of expandability options, the Mac Pro is a dream machine for any content creator. However, despite its many strengths, it is not a machine I would recommend to most of our readers. Why?
Primarily because of its cost. For the most basic Mac Pro, you are looking at shelling out $6K, which will come with a mere 256 GB of SSD storage! It is puzzling why Apple even bothers selling the 256 GB option because that’s clearly not enough. The next “step up”, which is a bare minimum in my books, is the 1 TB SSD option, which you will need to spend another $1,400 for. So for the most basic and “workable” machine, you are looking at spending at least $6,400. Add a solid 4K IPS wide-gamut monitor, and you are looking at $7,500+. Want to get the new 32″ Pro Display XDR? Add another $6K on top of that. I just don’t see the point of spending this kind of money on a machine that you will be using to edit images.
The thing is, machines like the Mac Pro and the iMac Pro are better suited for demanding, multi-threaded applications that can fully take advantage of their processing power. Unless you stitch a lot of super high-res panoramas, or edit 4K+ content and need all the CPU cores, RAM and GPU you can get, there is no point in getting them. For standard post-processing work in Lightroom and Photoshop, the iMac is going to be your best bet, plain and simple.
A pretty decent build with the latest generation iMac Retina 5K will cost around $2K – that’s a huge difference in price! In fact, if you spend a bit more and get an 8-core Intel Core i9 CPU, you will be able to potentially outperform the basic Mac Pro when running Lightroom and Photoshop. These applications are not optimized for more than a few cores anyway, so if you can get a CPU with a faster base clock, you will be able to squeeze quite a bit of performance out of the regular iMac.
When purchasing my iMac a few years back, I went with the most basic 8 GB configuration, then bought third-party memory and upgraded the RAM myself, which was super easy, and I saved a lot of money (more on that below). With the latest 2019 iMac version, it is now possible to get up to 128 GB of RAM! So if you stitch high-resolution panoramas and need as much memory as you can get, the latest iMac is a pretty serious option.
iMac vs iMac Pro
Apple released its high-end iMac Pro in late 2017. With this release, the company wanted to appeal to those who want even more power from the iMac line of products. With up to 128 GB of RAM, up to 4 TB SSD, fast AMD Radeon Pro Vega 64 GPU and 10 Gbit Ethernet, these machines are phenomenal in terms of performance potential. They are the most powerful all-in-one desktop computers today.
The iMac Pro is a completely different beast compared to the iMac. Similar to the Mac Pro, it is a workstation-class machine that is optimized for those who run very demanding tasks that are able to take advantage of multi-core CPU performance. Unlike the Mac Pro, it has no upgrade options, but it does have a very compact form factor, typical of an iMac.
Compared to the iMac, it has very different configuration options and obviously a much higher price. While the cheapest iMac can be bought for under $2K today, the cheapest iMac Pro costs around $5K, while its most expensive configuration runs at a hefty price tag of $12K! And that’s for a now 3-year old machine. Ouch.
At the same time, the iMac Pro is a very powerful machine that has its uses. Those who run memory and processor-intensive tasks that need as many resources as possible, such as when stitching high-resolution HDR panoramas, or when working with 4K+ video content, will definitely benefit from the iMac Pro. This is the type of machine that video production studios often use.
Before the Mac Pro was announced, I actually ended up buying the iMac Pro when a local computer store was running a very nice promotion, so I was able to get it for less than $4K. Later on, I was able to perform a RAM upgrade through OWC, loading it up with 128 GB of RAM. It is a beast of a machine that I have been using for all my work, including video editing. Spencer also bought an iMac Pro for his needs, and he loves the performance he is able to squeeze out of it when editing 4K footage.
While both of us are heavy iMac Pro users, we do more than just photo editing with our machines, which is why we needed them in the first place. I personally love the fact that the iMac Pro comes with a 10 Gb Ethernet port so that I can edit photos and videos directly off my network-attached storage (the iMac is limited to 1 GbE). Unlike my massive PC desktop, the machine takes very little space on my desk, and I am able to connect two wide-gamut external monitors for multi-tasking.
Now, if I were editing images without running CPU and RAM-intensive jobs, I would be more than happy with a regular iMac. So if you are wondering which one to get, the answer is going to be very similar to the Mac Pro – it is not worth it for most photographers out there. Not only because of the much higher price tag but also because of the same reasons highlighted earlier – applications such as Photoshop and Lightroom are simply not optimized for Intel Xeon processors with tons of CPU cores. You are going to be paying a lot of money for very small performance gains, if any.
In summary, the iMac Pro is not a machine I would recommend for everyday photography needs – the regular iMac is going to be your best bet.
21.5″ iMac vs 27″ iMac
When working on high-resolution images, the lower the resolution of the screen, the more you will be scrolling from one area of the image to another when zoomed in. With modern cameras now sporting 30+ MP sensors, it might make sense to move up to higher resolution screens.
Apple has been packing Retina 4K+ screens on its iMacs for a while now for that reason, and those IPS screens are pretty decent for displaying images. So what iMac would be best suited for photography? The 21.5″ version with a 4K screen or the 27″ version with a 5K screen?
Unless you have desk space limitations, I would go for the 27″ Retina screen. With its 5120 x 2880 resolution, you have a lot of real estate in terms of monitor desktop space, even for displaying several application windows. But the biggest benefit is the physical monitor size – a 27″ screen is huge in comparison to a 21.5″ screen. There is simply no comparison between the two.
CPU and GPU Considerations
Unless you have budget constraints, it would make sense to get the latest and greatest iMac, which is basically the Early 2019 model with Intel’s 9th-Generation CPUs. The current architecture supports up to 128 GB of RAM, which is more than plenty for all photography needs. Heck, even the most basic 6-core Intel Core i5 CPU is going to be great for post-processing.
Buying the current generation iMac will also help keep its resale value higher for a couple of years. However, do keep in mind that computers, in general, are never a good investment in the first place – expect to lose value very quickly. With the fast pace of technology, that’s just the way it is! Remember “It’s All About The Pentiums” by Weird Al Yankovic? “My new computer has got the clocks, it rocks, but it was obsolete before I opened the box!” LOL, so true! While it might be a good idea to get the “latest and greatest” to be set for the next few years, if the newest technology is far more expensive than something that is only 5-10% slower, that marginal performance increase might not be worth the investment.
What about Intel Core i5 vs Core i9? Depending on the workload, the performance difference between the two can vary quite a bit. You probably won’t see a huge difference in applications like Lightroom and Photoshop that have a hard time utilizing more than a few cores anyway, but for exports and other tasks that can take advantage of more cores and hyperthreading, you will be better off with an Intel Core i9 CPU. If money is not an issue, go for the 8-core i9 CPU.
Aside from lack of future upgrade options, one of the drawbacks of the lower-end iMac is its somewhat weak AMD Radeon Pro 570X GPU. With both Lightroom and Photoshop supporting GPU acceleration, you certainly get a performance boost when using a faster video card. Unfortunately. if you choose to upgrade to the higher-end AMD Radeon Pro Vega 48, you are looking at adding another $500 to the cost of the machine.
Note
Keep in mind that not everything is GPU-accelerated in Photoshop and Lightroom – only certain tasks are. In Lightroom, for example, sliders and tools like gradient filters are GPU-accelerated, whereas the adjustment brush and spot healing are not. See my “What is GPU Accelerated in Lightroom?” article for more details.
If money is not an issue, go for the AMD Radeon Pro Vega 48 GPU, as you will be able to accelerate the performance of most post-processing software out there, including Lightroom and Capture One.
Storage Considerations
With the iMac having so many different storage options (512 GB to 2 TB PCIe SSD and Fusion Drives from 2 TB to 3 TB), choosing an appropriate storage option can also be challenging. You must choose your storage option carefully, as you will not be able to upgrade it in the future.
My personal recommendation is to stay away from spinning drives when buying computers. PCIe flash drives are much faster, and they have lower chances of failing or building up “bad blocks” overtime. With the iMac getting pretty hot under full load, putting a spinning drive might not be the best idea. But that’s not the main reason why I would recommend a PCIe flash drive. When choosing your Lightroom storage option, it is always best to place your Lightroom catalog and cache in the fastest drive you have available.
Keep in mind that Lightroom stores not only its catalog file but also preview images under the same folder structure. While a Fusion drive can off-load the catalog into its faster SSD memory, your preview files will most likely still reside in the spinning area of the drive, slowing access times down. So you are going to be better off by placing your Lightroom catalogs in the faster flash storage.
What about storage space? Flash memory gets expensive fast, so what size is optimal? This is strictly a budget-driven question. If you have a large budget, get the largest PCIe Flash drive, which is 2 TB. But if that is too expensive, 1 TB will also work. Personally, I would avoid 512 GB, as it would be too limiting – once you load up your Lightroom catalog, it will eat through that storage too quickly, especially with full-size previews.
Now, if you end up choosing a small flash storage option, or if you already have a Fusion drive, there is no need to be overly concerned. You can still use an external storage device, such as the Samsung Touch Portable SSD, or an external NAS / DAS if you need a lot more storage. The Samsung Portable SSD is so small and lightweight, that you can leave it dangling off your iMac’s Thunderbolt port on the back of the machine.
Although such drives are based on PCIe NVMe Flash technology, keep in mind that their speeds are still limited when compared to the ultra-fast flash drives on the iMac. A typical flash drive on the iMac is 2x to 2.5x times faster in comparison, so there is a noticeable performance difference between the two. So ideally, you should try to get as much SSD storage as possible on the iMac.
RAM Considerations
When choosing an iMac, always choose the least amount of RAM. Apple wants you to shell out $600 for 32 GB, $1000 for 64 GB of RAM and there is not even an option to buy 128 GB. Buying RAM separately does not void the iMac warranty, so you don’t have to worry about that at all!
When buying my iMac a while back, I went with the 8 GB configuration, got 32 GB RAM sticks separately, which only cost me $150. I saved $450 going this route! If I were to buy the latest Early 2019 iMac, I would do the same and buy 64 GB DDR4 2666 Mhz SO-DIMM kit from OWC for $350 – that’s a whopping $650 in savings. And for those who want to max out the iMac, the 128 GB kit is $680 – still far cheaper than the 64 GB option offered by Apple.
Installing memory is super easy. All you have to do is open the rear RAM panel on the iMac, remove existing memory and swap it out with the new memory. The procedure is not technical at all and if you have trouble with the process, you can ask someone else to do it for you. Folks at OWC made a 2-minute video that shows the process right here. It took me a couple of minutes to do it for my iMac, and the machine booted up without any issues.
So unless you want your money down the drain, don’t buy the most beefed up iMac – buy memory separately and install it yourself to save hundreds of dollars.
Please note that the above does not apply to the iMac Pro. If you are planning to get the iMac Pro, please make sure to pick your RAM options wisely at the time of purchase, since upgrading RAM is going to be much more difficult, and it will void Apple’s warranty.
In summary, when picking your iMac configuration, make sure that you take CPU, GPU and storage options very seriously before you commit. Those components are very hard, or potentially even impossible to upgrade – some components might be soldered to the motherboard. However, this does not apply to RAM. You can buy it separately and upgrade at any time.
iMac and iMac Pro Recommendations
Based on the above, below are my recommendations for the latest iMac (Early 2019) with Intel’s 9th-Generation CPUs:
- Apple 27″ iMac 5K, 3.0 Ghz Intel Core i5 Six-Core, AMD Radeon Pro 570X, 8 GB RAM, 1 TB Flash Storage – $2,299
- Apple 27″ iMac 5K, 3.7 Ghz Intel Core i5 Six-Core, AMD Radeon Pro 580X, 8 GB RAM, 1 TB Flash Storage – $2,599
- Apple 27″ iMac 5K, 3.6 Ghz Intel Core i9 Eight-Core, AMD Radeon Pro Vega 48, 8 GB RAM, 1 TB Flash Storage – $3,449
- Apple 27″ iMac 5K, 3.6 Ghz Intel Core i9 Eight-Core, AMD Radeon Pro Vega 48, 8 GB RAM, 2 TB Flash Storage – $3,849
Personally, I find the most value in the third option at $3,449. With the fastest Core i9 CPU, AMD Vega 48 GPU and 1 TB of storage, it is a very powerful desktop that could process anything you throw at it. However, if my budget was limited, I would just go for the first option.
For RAM, it all depends on your needs. I would recommend going with 32 GB RAM minimum for those who are on a tight budget, but if you want to be able to quickly stitch large panoramas, go for either 64 GB or 128 GB.
- OWC 32 GB DDR4 2666 Mhz SO-DIMM (2×16 GB) – $154
- OWC 64 GB DDR4 2666 Mhz SO-DIMM (2×32 GB) – $349
- OWC 128 GB DDR4 2666 Mhz SO-DIMM (4x32GB) – $679
The iMac Pro models are all very expensive, so you will need to look at the different configurations purely based on your needs, as the cost of the machine is going to go up dramatically depending on what CPU, RAM and SSD option you are going to pick.
Hope you found this article useful. If you have any questions, please feel free to ask in the comments section below!
Everything deteriorates with time and monitors are no exception. That said, high monitors like your NEC, tend to stay accurate (with regular calibration) for a very long time – until a vital component suddenly fails. I had an Eizo which worked faultlessly for over eight years until finally it suddenly died.
In my view, an NEC monitor significantly outperforms any iMac on multiple counts – hardware calibration, quality control, screen uniformity, screen brightness, out of the box accuracy, semi-matte screen surface and warranty/customer service. iMacs are too bright, too shiny and cannot be hardware calibrated. Apple’s warranty is limited and support when problems arise can be ‘reluctant’.
If you want to make a lifestyle statement, get an iMac. If you are serious about photography get an NEC or an Eizo.
Betty, not quite sure about your claim regarding hardware calibration on iMac here. I’ve been using X-Rite colorimeters and spectrophotometers to profile and calibrate my iMac screens for years.
Dominique
Yes, but you have been carrying out software calibration (with a hardware device) for years – not direct hardware calibration. iMacs may be high end in price but they are not high end for accuracy.
Hardware calibration is only available on certain high end monitors – notably Eizo and NEC although one or two others are catching up. with hardware calibration, monitor specific software is used to make changes to the monitor’s internal (hardware) Look Up Table (LUT). These adjustments are stored in the monitor itself. The LUT in these monitors is typically 10, 12, 14 or 16 bit giving up to 65,336 levels of tonal separation in a 3D grid. Higher order math is used to carry out this higher bit depth processing in the ASIC/LUT in the back of the monitor and this results in very accurate tonal placement and separation and smoother calibration across the available gamut.
If you change computers, the monitor will stay accurate.
Software calibration makes changes to the computer’s video card or operating system which are stored in a special profile whose curves are loaded each time the computer is booted. The LUT in the video card is 6 or 8 bit with just 256 levels to work with and all the limitations that imposes. Many monitors cannot even achieve the basic requirements to set correct brightness levels, white point, black point or gamma for photographic use. The video card is required to create adjustment way beyond its pay grade resulting in problems such as banding and poor accuracy.
If you change your computer your calibration goes out the window.
Not exactly like that.
Video LUTs in GPU are at least 8bit (iGPU), 10+bit in some models like AMDs. That correction needs to be output to monitor. Some cards truncate to 8 if no 8+bit link between monitor and GPU is available. That may cause banding. To avoid this some cards do dither output. Dithered output gives smooth gradients and its visually equivalent to HW cal.
This is a general description for every cirrent computers, with raspberry pi HW in which AFAIK there is no user access to video LUT (if there is LUT).
This is not related to 10bit output in Photoshop, just how video LUT 1D correction is translated to screen. This works even over 8bit DVI correction in an old AMD card.
An Eizo or NEC or Dell HE cal does the same, panel input may be 8 or 10, but correction has 10 to 16bit, so you need to truncate in a way information is visually preserved (dither)
Regarding LUT3D for colorspace volume correction it is available in NEC PAs and *SOME* Eizo CGs (all but CG2420 CG2730). Usually it is not needed by photographers since they run on native colospace and let color management engine (like Adobe’s) deal with colorspace conversions when showing a ProPhotoRGB, sRGB or AdobeRGB image on screen.
Dells with HW cal, Eizo CS and those limited CGs use a lut-matrix-lut for “ideal colorspace” simulations like sRGB and it works reasonably well.
Because a LUT3D is HUGE node density (jumps not covered by LUT3D) is low, typical 17x17x17 (17 step in 0-255 or 0-1023 entry), it usually relies on a 1D LUT full entries (like in a GPU 1D LUT) to fix grey. So a 17 cube side LUT3D has just 4913 entries (17x17x17), at 10 to 16bit precision, but just ~5000 entries, not too much density but enough for a well behaved screen.
@Dominique the problem here, iMac, is that iMacs are like big laptops regarding screen & calibration:
-Since there is no OSD, the only way to fix white point is to limit GPU output in 1 or 2 channels. Exactly like a laptop. A cheap IPS monitor like Dell U2415 (sRGB IPS) does not have such limitation. You can use ODS gains to bring whitepoint close to your desired wp target (within display limitation)
-Like other displays corrected by GPU (so it is not an Apple limitation) GPU LUT correction is limited to grey (whitepoint, gamma and grey neutrality). Gamut emulation to “choose your desired working colorspace” is not available… although AMD cards running MS Windows can simulate sRGB on GPU. Usually this is not a problem for a huge % of users since MacOS has desktop color management, but that has another asociated issues
-MacOS embed color management engine for desktop and apple apps is faulty & buggy. It CANNOT work properly with detailed or accurate profiles, perhaps this is a speed limitation because it relies on some GPU acelerated task. Anyway a design flaw of the whole color management system. So when you calibrate a macbook or imac screen you are forced to use extremely simplified profiles which we can summarize as matrix profile, 1 TRC (3 equal TRC even if they ar not!), ideal black and you can even add native whitepoint. This issues are described in DisplayCAL forum & doc and DisplayCAL default settings for MacOS use those kind of profiles so for most users go unnoticed. NEC or Eizo users use their own vendor HW cal apps and those apps like ColorNavigator regardless of macos/win use that kind of extremely idealized profiles (because of their HW & QC those idealized profiles are an actual match of display calibrated behavior).
ColorConsultant
Thank you for such a comrehensive explanation.
I learned something new even though I had to read it three times to understand:)
I wish I was an expert.
The funny thing with true high end CGs (I think that you have one of these, with LUT3D) or NEC PAs (LUT3D) is to emulate another display behavior, as long as emulated display gamut is withing your CG gamut.
Not the most used feature for photographers (hobbyst or pros) but for Ilustrators & digital artist who do things for mobile/tablet (like -paid- tales app for kids) may be helpful if your evryday app has not embebed a true or working softproof feature (I do not remember if Krita, for example, has such softproofing features).
For ipads, just emulating P3 is pretty stright forward, no magic there. But to see realtime how your design will show in the Samsung AMOLED in your hands may be helpful (there is a Samsung store, maybe it is not a market for US, but other people may find t interesting or profitable)
First of all you need to profile (just profile, remotely via HTTP with DisplayCAL) the emulated screen. Use proper spectral corrections if colorimeter, detailed XYZ LUT profile, 400+ patches, configure DisplayCAL to use remore HTTP measurements, conect your non color managed tablet to computer IP:port. Then profile.
People without LUT3D monitors: open Photoshop, then just use softproof with preserve RGB numbers (see things like in an Android tablet without color management).
People with a LUT3D monitor under Windows may use vendor app to emulate the tablet profile (NEC multiprofiler who relies in factory cal or user updated cal) or make a LUT3D (“3dl”, with Displaycal, tablet profile source, monitor profile destination, 17x17x17) for ColorNavigator. Now your monitor behaves like that tablet! Macos color management engine in desktop may ruin this without further configuration, so it’s more a WIndows world tool.
Excellent article as always! Regarding this and the next article, if one already has a quite powerful laptop, why not buy an excellent 27″ color monitor for photo editing rather than a desktop computer? For example, I have a 15″ MacBook Pro (2018) with 2.6 GHz 6-core Intel i7, 32GB RAM, 1 TB and Radeon Pro 560X 4GB graphics card. To couple this with, say, the Dell UltraSharp 27 4K monitor UP2720Q would seem to have both price and other advantages (built-in colorimeter) over buying a 27″ iMac.
I was also considering that way. I could take the computer with me instead of only having it at home. But the ergonomics of this laptops still are worse than a desktop station, connectivity is usually rather limited. So I would need a kind of a docking station and a mouse or something more precise than the trackpad (I could not edit with the trackpad of a MacBook or any other laptop), and after a while the battery would drain faster than in the beginning. So I decided not to go with a big laptop for home use as I would not use it’s screen, it’s keyboard, it’s trackpad and it’s battery. Too many superfluous components for me.
thank you so much!! I have been trying to figure out what would be best for me being a wedding photographer and I have looked at several articles but this one was by far the best information !
I mainly use my my iMac for lightroom editing. Currently I have a 2013 27″ iMac, I installed a 1 tb SSD drive about 2 years ago, I have 16 gig ram, it’s starting to lag a bit, the fan cuts on frequently.
I’m not too up on the lingo of guts of a computer. Would you recommend waiting for the new releases of the iMac coming out sometime this year, or would the current model be just as good…?
Thanks!
concerning the apple warranty—for the 27 In machine the most ram apple will put in is 64g. I If I put in 128 g withe 4 x32g cards will that affect the warranty?
Hi, great article but my brain is having a hard time condensing the bits that I need… I’m a budding photographer that was looking at purchasing the $1400.00 iMac 21.5
I don’t need things to run super-fast, So, I’m ok with wait times and adding external memory as needed. If I’m also alright with having a smaller screen than the 1st option on the list, couldn’t this machine do the job for me? I may want to fool around with animations later and work with editing $k video but hopefully, there are some add ons for that maybe that would work …
Hi, Angelica!
Fellow Photographer Angelica here!
I recently just purchased the iMac 21.5in 4k display last week and am returning it…I primarily use Photoshop and Lightroom and these wait times are far longer than you’ll be willing to endure…in the span of 30min, I was only able to MINIMALLY edit 3/4 pictures. It was painful. I am still trying to figure out which is the best pic, I am unsure if it is the 8GB of ram that is not enough for the apps or what.. but I do not recommend the lowest tier as my purchase was the middle..
Very comprehensive comparison and open ideas and comments for all options. This is very useful for me when I upgrade from my aging 27″ iMac late 2015 i7 w 3T fusion drive to an updated model.
As I’m gravitating towards video more, I’ve been eyeing a iMac Pro to replace my late 2014 retina iMac, but I just can’t see paying top dollar for a 2017 design. Makes no sense. Apple needs to do a refresh of the iMac Pro lineup, stat.
Apple did just that recently.
Have a look at the Apple site.
Looks like a wizard line up – back to total flexibility and upgradeability at last.
Not the Mac Pro (can’t afford that), but iMac Pro.
Oh OK, my bad.
But isn’t the iMac Pro enough for you?
What could they do to refresh it from your perspective?
I would like your thoughts on this situation, I presently have a NEC PPA271W which is several years old now. I heard that the older they get the less actuate they are & I’m wanting to get a iMac 2019. My current set up is a MacBook Pro 15 inch late 2011 that my computer guy added ram & a SSD that’s 1T but I also use an external SSD 1T for LR storage. Anyway, should I go with new NEC or get the Apple monitor 5k. I don’t have room for both on my desk just wanted your thoughts. Thanks
Excellent piece, Nasim. Extremely helpful. Thank you.