I had a chance to take a few quick test shots with this lens at a local store today on my A7r4. As I would mainly want this lens for stopped down (focus-stacked) landscapes, my interest is mainly in its corner performance stopped down to at least 6.3. I'm assuming mid and center IQ will only be better, so I'm looking for the weakest link (in large print). This copy was reasonably well centered - the LR corner a little different wide open but all four pretty similar by about 5.6.
Here is the extreme LL corner (100% crop on A7r4) at 28mm F6.3, corner focused, minimal default sharpening in Adobe bridge.
At 70mm it seemed a little softer in my quick assessment.
My first reaction when I saw the images was that this lens seems decent but maybe not excellent if your goal is great IQ @60MP over the entire frame. But after applying a little small radius USM, the images actually look pretty good, which leaves me still undecided on this lens. But it's size and focal range certainly make it an enticing complement to my main WA/UWA lens. And on smaller sensors, it seems a great choice.
Jun 24, 2021 at 12:11 AM
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