Previously I set the value 1.8mm or 1.85mm, however some simulation results assuming exit pupil distance didn\'t match my field-test experience. So I changed that value to 2.55mm, eventually simulation results (e.g. spot diagrams) look so close to test samples.
And this is my latest simulation results:
When you use Summilux-M 35mm ASPH on A7, f=4m PC filter will greatly help corner performance.
Also for Kolari / Leica users will also gets better sharpness with f=8m PC!
Though Opto-sigma\'s lineup is up to 5m, I don\'t know where I can buy 8m PC .
Haruhiko
Another excellent update Haruhiko! If there is enough demand, a custom made batch of 8m lens is not out of the question.
For the filter case, that is a huge drop in the center performance with the PCX filter (plano-convex instead of plano-concave). How does the 8m filter work on the stock camera? I\'m surprised to see that the Lux 35 seems to perform less well using the PCX than the Kolari mod. Your real-life G 21 test shows that the PCX mod works wonderfully with one of the toughest lenses out there and the result is even better than the Kolari.
As most people here are interested in teh ZM 35/1.4, can you rerun the simulation with the ZM 35/1.4 instead? I think we can round up enough people to try this on the field.
Some of us would have the campability to compare the 35 1.4 Distagon ZM on a stock A7r and a Kolari modded A7r M. Mike Broomfield as an example has both a stock camera and an A7rM V2 and I have a stock cameras and an A7rM V3.
Previously I set the value 1.8mm or 1.85mm, however some simulation results assuming exit pupil distance didn\'t match my field-test experience. So I changed that value to 2.55mm, eventually simulation results (e.g. spot diagrams) look so close to test samples.
And this is my latest simulation results:
When you use Summilux-M 35mm ASPH on A7, f=4m PC filter will greatly help corner performance.
Also for Kolari / Leica users will also gets better sharpness with f=8m PC!
Though Opto-sigma\'s lineup is up to 5m, I don\'t know where I can buy 8m PC .
Haruhiko
Another excellent update Haruhiko! If there is enough demand, a custom made batch of 8m lens is not out of the question.
For the filter case, that is a huge drop in the center performance with the PCX filter (plano-convex instead of plano-concave). How does the 8m filter work on the stock camera? I\'m surprised to see that the Lux 35 seems to perform less well using the PCX than the Kolari mod. Your real-life G 21 test shows that the PCX mod works wonderfully with one of the toughest lenses out there and the result is even better than the Kolari.
As most people here are interested in teh ZM 35/1.4, can you rerun the simulation with the ZM 35/1.4 instead? I think we can round up enough people to try this on the field.
Some of us would have the campability to compare the 35 1.4 Distagon ZM on a stock A7r.and a Kolari modded A7r M. Mike Broomfield as an example has both a stock camera and an A7rM V2 and I have a stock cameras and an A7rM V3.
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