01-15-2012, 06:53 AM
[quote name='walter_g' timestamp='[url="tel:1326605217"]1326605217[/url]' post='14869']
Good point. There's no direct reference anywhere which aperture these are.
If you look at the comparison XF 2/18mm to EF 1.8/28 ( shown in [url="http://forums.dpreview.com/forums/readflat.asp?forum=1020&thread=40313316"]http://forums.dprevi...thread=40313316[/url] ) the MTF for the Canon lens appears to be at maximum aperture ( source: [url="http://software.canon-europe.com/files/documents/EF_Lens_Work_Book_10_EN.pdf"]http://software.cano..._Book_10_EN.pdf[/url] ).
If they did an apples-to-apples comparison, their MTFs should be at maximum aperture as well.
[/quote]
Sorry, but manufacturer MTFs are not cross-comparable.
Good point. There's no direct reference anywhere which aperture these are.
If you look at the comparison XF 2/18mm to EF 1.8/28 ( shown in [url="http://forums.dpreview.com/forums/readflat.asp?forum=1020&thread=40313316"]http://forums.dprevi...thread=40313316[/url] ) the MTF for the Canon lens appears to be at maximum aperture ( source: [url="http://software.canon-europe.com/files/documents/EF_Lens_Work_Book_10_EN.pdf"]http://software.cano..._Book_10_EN.pdf[/url] ).
If they did an apples-to-apples comparison, their MTFs should be at maximum aperture as well.
[/quote]
Sorry, but manufacturer MTFs are not cross-comparable.