Thank you for taking the time to post these images - you have saved me a lot of money! I am going to cancel my order for the Sony. Given that the Minolta 100mm F/2.4 shows better corner performance than both Leica 90mm APO lenses, I am going to guess that it is a sensor issue as well. The second 90mm APO, is that the R version?
On modern floating element lenses, adapter accuracy is everything. I have struggled with poor adapters, and through shimming, I have achieved very good performance with FLE lenses. As Zhangyue pointed out, you cannot even guarantee centre performance on a poor adapter. Even if your adapter is perfect in every measurement, the sensor\'s micro lens architecture might be incompatible with a RF lens. It is becoming obvious, that Sony do not want us using other off brand small lenses. They want to sell you their own branded lenses, as that is where they are probably making most of their money.
Regarding the Leica Lux asph, it is sharp on my 24mp M all the way into the corners, so I highly doubt that it is the lens. My Summilux 50mm Pre-asph is super sharp on the M too.
Thank you for taking the time to post these images - you have saved me a lot of money! I am going to cancel my order for the Sony. Given that the Minolta 100mm F/2.4 shows better corner performance than both Leica 90mm APO lenses, I am going to guess that it is a sensor issue as well. The second 90mm APO, is that the R version?
On modern floating element lenses, adapter accuracy is everything. I have struggled with poor adapters, and through shimming, I have achieved very good performance with FLE lenses. As Zhangyue pointed out, you cannot even guarantee centre performance on a poor adapter. Even if your adapter is perfect in every measurement, the sensor\'s micro lens architecture might be incompatible with a RF lens. It is becoming obvious that Sony, do not want us using other off brand small lenses. They want to sell you their own branded lenses, as that is where they are probably making most of their money.
Regarding the Leica Lux asph, it is sharp on my 24mp M all the way into the corners, so I highly doubt that it is the lens. My Summilux 50mm Pre-asph is super sharp on the M too.
Cheers.
Andrew
Oct 28, 2013 at 04:01 PM
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