On the question of whether 28/1.4 E-mount version is optimized for Sony sensor stack or not, I think it would be good to get some feedback on how it works with regards to corner-to-corner performance when stopped down in infinity shooting scenario.
From Bastian's review of M-mount version: https://phillipreeve.net/blog/review-thypoch-simera-28mm-1-4/
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On the Leica M10 this 28mm 1.4 shows a very good performance. There is a hint of a midzone dip at f/1.4 and f/2.0 and slightly lower contrast in the corners, but I actually wouldn’t mind using these aperture settings for infinity shooting if needed. Best across frame performance is reached somewhere between f/5.6 and f/8.0.
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On the Sony A7rII with its thick filter stack the situation looks very different. The midframe needs f/5.6 to look decent, the corners look best at f/11 but still not that great.
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Most of the available samples with E-mount version shown are wide open and it looks good there, but if the owners can confirm how it works on stopped down infinity shooting scenario, and whether it reaches very good corner-to-corner sharpness between f5.6 and f8 (like M-mount version on Leica) or whether the corners are not very good even at f8, it would be useful information to understand if it's optimized for Sony sensor or whether it works just like the M-mount version adapted on Sony.
If they optimize for different sensor stacks, it would be beneficial for them to advertise it and it should be fairly easy to demonstrate it.
On the question of whether 28/1.4 E-mount version is optimized for Sony sensor stack or not, I think it would be good to get some feedback on how it works with regards to corner-to-corner performance when stopped down.
From Bastian's review of M-mount version: https://phillipreeve.net/blog/review-thypoch-simera-28mm-1-4/
------------------------------------------------------------------------------------------
On the Leica M10 this 28mm 1.4 shows a very good performance. There is a hint of a midzone dip at f/1.4 and f/2.0 and slightly lower contrast in the corners, but I actually wouldn’t mind using these aperture settings for infinity shooting if needed. Best across frame performance is reached somewhere between f/5.6 and f/8.0.
....
On the Sony A7rII with its thick filter stack the situation looks very different. The midframe needs f/5.6 to look decent, the corners look best at f/11 but still not that great.
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Most of the available samples with E-mount version shown are wide open and it looks good there, but if the owners can confirm how it works on stopped down infinity shooting scenario, and whether it reaches very good corner-to-corner sharpness between f5.6 and f8 (like M-mount version on Leica) or whether the corners are not very good even at f8, it would be useful information to understand if it's optimized for Sony sensor or whether it works just like the M-mount version adapted on Sony.
If they optimize for different sensor stacks, it would be beneficial for them to advertise it and it should be fairly easy to demonstrate it.
Apr 08, 2025 at 01:21 AM
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