02-25-2011, 10:09 AM
[quote name='mst' timestamp='1298587252' post='6341']
Uploaded a sample shot at f/1.4. Only one, though.
-- Markus
[/quote]
Thank you, you did really fast <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' />. I wish we could see one more at least - am I too demanding? <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' /> I mean picture of lets say building from 20-30m at f1.4 (though I realize it is not meant to use such lens this way).
Why I´m suggesting this.... Well, have you seen the lenstip.com / optyczne.pl reviews? They conclude the lens is of substandard quality at f1.4. Actually, the have tested the lens on D3X and analyzed their data using Imatest exactly like you - and the MTF results at f1.4 are really surprisingly poor. How is this possible? Can you see any problem with their testing methods? Please let me understand why there are such differences in results between your and their test (I don´t believe this is due to simple "sample variations"). You know, I don´t expect you to "bash" them or something, my interest is motivated "scientifically" only.
My plea for a shot of a building at f1.4 reflects their sample shot here:
http://pliki.optyczne.pl/nik1.4-35/nik35_f1.4_4.JPG
The whole test stars here (you have probably seen it, anyway...)
http://www.optyczne.pl/219.1-Test_obiekt..._1.4G.html
(I have just used Google tanslation to "read" it but I think it was understandable this way)
Uploaded a sample shot at f/1.4. Only one, though.
-- Markus
[/quote]
Thank you, you did really fast <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
' />. I wish we could see one more at least - am I too demanding? <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='' /> I mean picture of lets say building from 20-30m at f1.4 (though I realize it is not meant to use such lens this way). Why I´m suggesting this.... Well, have you seen the lenstip.com / optyczne.pl reviews? They conclude the lens is of substandard quality at f1.4. Actually, the have tested the lens on D3X and analyzed their data using Imatest exactly like you - and the MTF results at f1.4 are really surprisingly poor. How is this possible? Can you see any problem with their testing methods? Please let me understand why there are such differences in results between your and their test (I don´t believe this is due to simple "sample variations"). You know, I don´t expect you to "bash" them or something, my interest is motivated "scientifically" only.
My plea for a shot of a building at f1.4 reflects their sample shot here:
http://pliki.optyczne.pl/nik1.4-35/nik35_f1.4_4.JPG
The whole test stars here (you have probably seen it, anyway...)
http://www.optyczne.pl/219.1-Test_obiekt..._1.4G.html
(I have just used Google tanslation to "read" it but I think it was understandable this way)