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| p.3 #4 · p.3 #4 · Pre-order: Sony FE 100-400mm F4.55.6 GM OSS |
Fred Miranda wrote:
Here's the MTF graph:
If I hadn't learned that Sony MTFs for their zooms are fantasies I'd be pre-ordering immediately.
But if that performance wide open at 400 can actually happen in a manufactured lens, or anything close, then it'll be amazing.
To answer @jhinkey if you believe these graphs its great. But like everyone except Zeiss (and that includes Leica I think) they are theoretical. Where Sony and Canon differ from Leica though is that the graphs don't take into account the effects of diffraction (which means that the stopped down performance is in theory, or perhaps in better theory, not quite as good as the graph says)
But it's manufacturing tolerance that's the big deal. The chart for the 70-300 was great, and @Fred Miranda tried many copies and couldn't get a good one. I decided to let him be a canary in that particular coal mine and haven't tried (though maybe some have got good ones)
Now the reality is, of course, that with a zoom it'll never be equally good at all FLS, and there will be copy to copy v variation as to what FL is better (one thing we learn from Roger Circala is that with zooms of about the same vintage, copy to copy variation is more significant than model to model variation)
But there's talk of things getting better in this regard, so it'll certainly be interesting to see how people go with it,....