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| Re: Sony A7 and A7r Images and Discussion |
Edgars Kalnins wrote:
"My point here is not to say which is better. There are many other factors to take into account (number of blades, build quality, ease of use …) But here are 3 of the best 35mm lenses the world has ever know and the Sony/Zeiss 35mm F/2.8 Sonnar is easily as good on the MTF charts."
Dear Susan weighs in
Are sony zeiss MTF charts based on real lens test now? If not, the article seems pointless, doesn't it!?
No, Sony Zeiss MTF's are calculated, which should be obvious to anyone just by looking at the MTF (because central/0 values at 100% are impossible!). A curve that starts at 100% at F8 is not of this world. Diffraction alone would prevent such a real world measurement.