Zeiss Touit 12mm f/2.8 vs Fuji XF 14mm f/2.8 R
Let’s take a look at how the Zeiss Touit 12mm f/2.8 compares sharpness-wise to the Fuji XF 14mm f/2.8 R. These lenses obviously have very different focal lengths (those 2mm result in 10° in angle of view difference), but considering that Fuji does not have a wider prime, this is the best candidate to compare to:
As you can see, the Fuji XF 14mm f/2.8 R is a noticeably sharper lens, even wide open. While both lenses are fairly similar in the corners at f/5.6, the XF 14mm f/2.8 R yields sharper results, especially on modern high-resolution cameras like the Fuji X-T4.
Zeiss Touit 12mm f/2.8 vs Fuji XF 10-24mm f/4 R OIS
What if we were to compare the Zeiss to the Fuji XF 10-24mm f/4 R OIS zoom lens? Although I don’t have measurements for 12mm focal length, you can take a look at both 10mm and 14mm focal length MTF numbers and have a rough idea about what to expect from the zoom:
Interestingly, the Fuji XF 10-24mm f/4 R OIS shows better performance at f/4 in the center frame. However, when it comes to mid-frame and the corners, the Zeiss Touit 12mm f/2.8 is clearly a better choice. As you can see from the above charts, its sharpness in those areas is significantly better at f/4 and f/5.6.
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