philip_pj Offline Upload & Sell: On
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Matt Granger with Dr Nasse:
http://petapixel.com/2014/09/21/video-fascinating-lens-design-101-interview-zeiss-master/
'computer design and glass technology' (as drivers of new lens design)
'size and weight will then grow incredibly' (to get better lenses)
'nobody could afford it and nobody could use it' (larger better lenses)
'a demonstration of our performance' (wrt a hypothetical unlimited cost lens)
'reflections back from the sensor is about 10 times the reflections from glass surfaces'
'even with modern high performance coatings, suppression is not good enough'
'I try (as a photographer) to build a bridge between the world of numbers and the perception'
'I love 85mm, for dealing with people, I can only recommend 85mm'
'for the older lenses - Planar 85/1.4 - color corrections is not good enough for the speed of the lens, high speed makes that the depth of focus and depth of field are actually smaller than the focus difference than the color - we see color fringes (LoCA)'
comment on 135/2 APO at 31.15 - 'Otus was not yet decided'
'performance absolutely identical to the Otus'
Non-Otus lenses in ZEF that are outstanding?
135/2; 100/2 (100MP), 'not quite on the same level for color correction, if wide open color is essential, he should prefer the 135mm'), '21mm and the 15mm' (ZEF f2.8), 'these are the best ones' 'we should not forget the ZM 35/1.4'.
'Lighter smaller and cheaper certainly isn't Zeiss's trend.'
Lee, I have to agree..*but* Zeiss were late to the a7x party, the L35/L50 were almost a full year after the release of the a7/a7r, and both were quite easy redesigns for them. Also Fred and many others will prefer the new gen Loxia/Batis wide angles over the ZEF units. I'd guess Zeiss have their designers fully in harness right now in pursuit of 'small lens excellence'.
It will be interesting to see how the newly propagated, broad based respect for older lenses for their character / class / depth plays out, given that the big concerns and changes seem to be about stray light control, sensor reflection amelioration, new glass types (less than optimal give Otus level prices for 'better' glass) now the enviro people have outlawed lead. It seems a case can easily be made that makers are chasing image quality pure and simple, as an *end in itself*.
But - photographic quality has a very large artistic component rather than being merely a purely image quality matter, unlike say airliner or car design. Ours is not a simple matter of progress measured by metrics. If the concerns raised by Dr Nasse are so problematic and highly prioritized, why then do so many older lenses deliver the goods as well as, and often arguably better than - and let's say fully satisfying in so doing - so many new lenses on these digital cameras?
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