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10-02-2012, 04:18 PM   #16
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thanks, that is a good little reference chart

10-02-2012, 05:30 PM   #17
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If you get excited about charts that is :P

Take home message,

Read this

http://www.zeiss.de/C12567A8003B8B6F/EmbedTitelIntern/CLN_30_MTF_en/$File/CLN_MTF_Kurven_EN.pdf

If you care for a bit of science and are worried about "sharpness" getting in the "way" of you taking pictures.

Or, forget all that and just take pictures!!
10-02-2012, 05:33 PM   #18
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#edit.. I almost forgot. Heres a clue.

Do you know what your sensor can resolve?


## More editing.

All this has very very little to do with taking good photographs. No one is going to look at an image and go,

"Hmmm if only he had 2mm per line more resolution, I would really feel more engaged with it's subject.. oh what a shame."





#More more editing.

I nearly forgot the best question. How many lines per mm can your eye detect?

Just take pictures

Last edited by tromboads; 10-02-2012 at 06:00 PM.
10-02-2012, 08:44 PM   #19
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if one man wrote this article you provided the link for above, tromboads, ( http://www.zeiss.de/C12567A8003B8B6F/EmbedTitelIntern/CLN_30_MTF_en/$File/CLN_MTF_Kurven_EN.pdf ) then i do believe man is capable of anything. amazing what one must know to build a lens. wow.


10-02-2012, 08:56 PM   #20
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degree in physics, perhaps mechanical engineering I suspect. You could knock it out in 6yrs I suppose if you really wanted too :P
10-02-2012, 09:12 PM   #21
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QuoteOriginally posted by glinda Quote
if one man wrote this article you provided the link for above, tromboads, ( http://www.zeiss.de/C12567A8003B8B6F/EmbedTitelIntern/CLN_30_MTF_en/$File/CLN_MTF_Kurven_EN.pdf ) then i do believe man is capable of anything. amazing what one must know to build a lens. wow.
Zeiss does it right. Of all my Pentax mount lenses, my Zeiss 35/2 is by far the sharpest wide open. For Pentax brand lenses, I'd say the A-50/2.8 is sharp enough at max aperture.
02-25-2015, 09:19 PM   #22
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From the older M42 mounts the legendary Zeiss Ultron 50mm f1.8 (with the concave front element) and the later version with the flat front element of the Voigtlander Color Ultron 50mm f1.8 are sharp wide open. From the modern lineup the Zeiss Otus 55 and 85 and a few of the Sigma art full frame primes.

Pentax K3 + Voigtlander Color Ultron 50mm shot at f1.8

[url=https://flic.kr/p/rjSbt3]

Last edited by Stavri; 02-26-2015 at 12:56 PM.
02-26-2015, 12:55 PM   #23
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Zombie thread!!!!

02-26-2015, 12:56 PM   #24
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it's for posterity
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