About Dvir Barkay

Dvir Barkay is an award winning nature photographer born in Israel and currently based out of Philadelphia, PA. To see more of Dvir's work, please visit his website.

Post Archive By Dvir Barkay

What Is Back-Button Focus?

Back-button focus is a camera technique that separates focusing and shutter release to two separate buttons. It is a useful way to stop the camera's autofocus system from getting continuously engaged when the shutter is released. In this article, we will take a closer look at what back-button focusing is,...

Tamron 100-400mm f/4.5-6.3 Di VC USD Review

Announced just eight months after the Sigma 100-400mm F/5-6.3 DG OS HSM Contemporary lens, the Tamron 100-400mm f/4.5-6.3 Di VC USD gives photographers a similarly priced alternative to the highly successful Sigma offering. Both lenses compete in a market segment that remains unexploited by the likes of Canon and Nikon....

Canon EOS R Review

2018 was a big year for mirrorless cameras with Nikon, Canon, and Panasonic all announcing their first full-frame mirrorless systems. Nikon struck first when it released the Nikon Z-series cameras in the summer, but Canon wasn’t too far behind when they introduced the EOS R a couple of months later....

Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary Review

The following is a review of the Sigma 100-400mm F/5-6.3 DG OS HSM Contemporary lens which was released in February of 2017 as part of Sigma's affordable "Contemporary" lens lineup. The introduction of the Sigma 100-400mm F/5-6.3 DG OS HSM C lens is a logical one for the company as...

Recommended Sony A7 III Settings

Released five years after the original A7, the Sony A7III marks the third generation of Sony’s ‘entry’ level full-frame mirrorless camera series. Based around an updated 24.2-megapixel back-illuminated full-frame sensor, the A7 III punches well above its weight with a rich feature including a 693 phase-detect autofocus system, 10 frames...

Sony A7 III Review

Calling the A7 series ‘entry-level’ is a bit misleading, rather it is less specialized and seeks to appeal to a broader range of photographers at an accessible price point. It doesn't offer the same high resolution as the A7R series, the same low-light and video-centric features of the A7S series...

Sony FE 70-300mm f/4.5-5.6 G OSS Review

A traditional weakness of Sony's FE lens lineup has been the number of options available at the telephoto end of the range. The issue has been somewhat rectified in recent years with the release of the Sony FE 70-300mm f/4.5-5.6 G OSS, Sony FE 100-400mm f/4.5-5.6 GM OSS and Sony...

Sony FE 24-105mm f/4 G OSS Review

Announced alongside the Sony Alpha A7RIII mirrorless camera body last year, the Sony FE 24-105mm f/4 G OSS is a significant addition to Sony’s standard zoom lens lineup for their FE mount. Before its release, Sony users had a bit of a tricky choice when it came to selecting a...

Sony FE 55mm f/1.8 ZA Lens Review

Introduced alongside Sony’s first full-frame mirrorless cameras in 2013, the Sony Sonnar T* FE 55mm f/1.8 ZA lens was the first fast-aperture, “standard” focal length prime lens available for the FE mount. The 50mm prime lens has seen a resurgence in popularity in recent years, with many new lenses in...

Sony RX100 VI Review

Announced in June 2018, the RX100 VI is yet another iteration of Sony's RX100 series of pocketable high-end compact cameras. The last few years haven't been kind on point-and-shoot cameras with smartphone cameras now the tool of choice for most casual photographic situations. This has nearly eradicated the point-and-shoot camera...