Dont understand the mtf results for the DA* 300mm on photozone

Started Jan 21, 2012 | Discussions thread
Waynes World
Regular MemberPosts: 370Gear list
Like?
Re: Dont understand the mtf results for the DA* 300mm on photozone
In reply to freezin, Jan 21, 2012

I can tell you that I am familliar with both the Nikon and Pentax 300's and I can tell you that MTF results for both those lenses are very good. The Nikon is the crisper lens around f8 but it looses some sharpness towards the extreme edges. The Pentax is a more consistent lens across the range. The numbers you are seeing for the Pentax lens are around 2300 (line widths per picture height). That is how they measure sharpness. You have to be carefull comparing this because you need to see the nikon and cannon lenses tested at 15mp and you can't find that at photozone.
--
Richard M.
http://richardphoto.webs.com/ - See my new website!

 Waynes World's gear list:Waynes World's gear list
Pentax K-30 Pentax smc FA 50mm F1.4 Pentax smc DA* 50-135mm F2.8 ED (IF) SDM Pentax smc DA 17-70mm F4.0 AL (IF) SDM +1 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow