New Sony A7sIII accessories: You will also have to preorder the world’s first CFexpress Type A cards at Adorama, BHphoto. Amazon. And of course the new Sony MRW-G2 CFexpress Type A/SD Memory Card Reader at Adorama and BHphoto.
The Sigma 100-400mm F5-F6.3 DG DN OS Contemporary (1000 euros) is a very good lens for the price and will ideally complement the Sony FE 24-105 F4 G OSS on a A7III, A9 or A7RIII The focal range makes it very versatile for sports, portrait, landscape or animals, but if you intend to use it mostly at around 400mm you may want to look at the Sony FE 200-600mm F5.6-6.3 G OSS more suited for pure animals/birds shooting On the Sony A7RIV it can not compete with the Sony FE 100-400mm in terms of sharpness and AF speed, but on a lower resolution camera like A7III or A7RIII you won’t see noticeable difference in term of sharpness The AF is very good on still subject but on subject in movement you get a higher rate of missed shoots than on the Sony FE 100-400mm So for animals , sports or A7RIV the recommendation will still be the Sony FE 100-400mm GM OSS F4.5-F5.6, for the others and in case of limited budget, the Sigma 100-400mm F5-F6.3 DG DN OS offers an excellent alternative
Pros Very good price Weight Excellent sharpness on A7III / RIII (24 / 42Mpix) Very good color rendition Very good and soft blurry background Good Bokeh balls Low CA Very good AF for still Effective image stabiliser Very good build quality Very good ergonomics
Average Not compatible with Sony TC, and no Sigma TC possible due to licenses from Sony Only very good sharpness on A7RIV (61Mpix) Average Flare resistance Moderate vignetting and distortion that will require some correction specially at 400mm (no lens profile correction yet) AFC on moving subject not as reliable as Sony GM lens Tripod collar is not included and is a paid option (130$) Corners sharpness
Cons AF shows sometimes slowness & hesitation in video
New Sony A7sIII accessories: You will also have to preorder the world’s first CFexpress Type A cards at Adorama, BHphoto. Amazon. And of course the new Sony MRW-G2 CFexpress Type A/SD Memory Card Reader at Adorama and BHphoto.
Here is a pure photographers comparison between the new Canon EOS-R5 and the Sony A7rIV. Yes the Canon can more or less match the Sony A7riV performance but the Sony is $700 cheaper and over a year old. I cannot wait what Sony will give us in 2021 if they launch a new A7rV…will this be the first 100MP FF camera?
Matti Haapoja compares the Sony A7sIII with the Canon EOS-R5 and clearly prefers the Sony:
Dpreview also completed the Canon EOS-R5-R6 overheating test and concluded:
Our testing suggests that the cameras perform in exactly the way that Canon said they would. However, there is an important caveat that Canon’s figures don’t address: although the cameras can repeatedly deliver the amount of video promised, they may not always do so in real-world usage.
Even set to the mode designed to limit pre-recording temperature build-up, the clock is essentially running from the moment you turn the camera on. Video recording is the most processor-intensive (and hence most heat generating) thing you can do, but any use of the camera will start to warm it up, and start chipping away at your recording times. Consequently, any time spent setting up a shot, setting white balance, setting focus or waiting for your talent to get ready (or shooting still images) will all cut into your available recording time, and you won’t reliably get the full amount Canon advises.
Not only does this make R5 a poor fit for many professional video shoots, it also means that you can’t depend on the cameras when shooting video alongside stills at, say, a wedding, which is a situation that the EOS R5 clearly is intended for.
New Sony A7sIII accessories: You will also have to preorder the world’s first CFexpress Type A cards at Adorama, BHphoto. Amazon. And of course the new Sony MRW-G2 CFexpress Type A/SD Memory Card Reader at Adorama and BHphoto.
