Specs Comparison: a7R IV Vs. a7R III Vs. Nikon Z7 Vs. Panasonic S1R

Here is a quick specs of new announced Sony a7R IV with other similar cameras: a7R III, Nikon Z7, Panasonic Lumix S1R. You can see full specs comparison at this page.

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Mirrorless Comparison: Sony a7R IV Vs. Nikon Z7 Vs. Panasonic S1R

Here is a quick size comparison of Sony a7R IV (B&H Photo Video/Adorama/Amazon) wih other related cameras.

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Size Comparison: FE 200-600 G Vs. FE 600 GM Vs. FE 400 GM Vs. FE 100-400 GM and More

The new announced Sony FE 200-600mm f/5.6-6.3 G OSS Lens (B&H/Adorama/Amazon/Focus Camera) and FE 600mm f/4 GM OSS Lens (B&H/Adorama/Amazon/Focus Camera) now available for pre-order online. Here is a quick size comparison of these super telephoto prime & zoom lenses:

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Size Comparison: FE 200-600mm Vs. FE 400mm f/2.8 GM Vs. FE 100-400 GM Lenses

Sony will officially announced the new FE 200-600mm f/5.6-6.3 G OSS Lens on June 5 or 6. According to leaked images, here is the first size comparison of Sony FE 200-600mm f/5.6-6.3 G OSS Lens with FE 400mm f/2.8 GM OSS Lens and FE 100-400mm f/5.6-6.3 GM OSS Lens.

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Eye AF Comparison: Sony a7 III Vs. Nikon Z6 Vs. Canon EOS R


Nikon has released eye AF firmware updates for Nikon Z6 and Z7.  Here is the video comparison of Sony a7 III Vs. Nikon Z6 Vs. Canon EOS R on eye AF. From the result, we can see Sony a7 III’s eye AF is still much better than Nikon Z6 and Canon EOS R.

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Comparison: Sony FE 135mm f/1.8 GM Vs. Sigma 135mm f/1.8 Art Lenses by Tony Northrup

Tony Northrup has compared the new Sony FE 135mm f/1.8 GM lens (B&H Photo/Adorama/Amazon) with Sigma 135mm f/1.8 DG HSM Art lens (B&H Photo/Adorama/Amazon). He thinks both lenses are very sharp lenses, both have great image quality. The Sony FE 135mm f/1.8 GM lens’s AF is a bit better than Sigma 135mm f/1.8 Art lens.

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Comparison Reviews: Tamron 28-75mm f/2.8 Di III RXD Vs Sony FE 24-70mm f/2.8 GM

Here are some new comparison reviews of Tamron FE 28-75mm f/2.8 Di III RXD Lens (B&H Photo/Adorama/Amazon) with Sony FE 24-70mm f/2.8 GM Lens (B&H Photo/Adorama/Amazon). From the comparison, we can see that both lenses has similar image quality. See the comparison reviews below:

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Video: Sony a6400 Real-Time Tracking Vs. Canon 6D Mark II Dual Pixel Autofocus !

Which camera has the best autofocus, a6400 or 6D Mark II ? Youtube user Sidney Diongzon compare Sony’s Real-Time Tracking (Sony a6400) against Canon’s Dual Pixel Autofocus (Canon EOS 6D Mark II). From the video, we can clearly see that a6400 has better Autofocus than 6D Mark II.
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Video: Sony FE 135mm f/1.8 GM Vs. Sigma 135mm f/1.8 Art

Manny Ortiz has compared the new Sony FE 135mm f/1.8 GM lens (B&H Photo/Adorama/Amazon) with Sigma 135mm f/1.8 DG HSM Art Lens (B&H Photo/Adorama/Amazon). From the comparison, we can see in low light condition, Sony FE 135mm f/1.8 GM lens is much better than Sigma 135mm f/1.8 DG HSM Art Lens.

Sony a7R III Vs. Nikon Z7 Eye AF Test by dpreview

dpreview compared the Eye AF feature on Sony a7R III and Nikon Z7 at the CP+ show 2019. It seems Sony a7R III‘s eye AF is more accurate than Nikon Z7, and a7R III can detect eyes from further away.
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