DXO - lens reviews - 300mm f/2.8 IS II - that bad ???

Started Oct 15, 2012 | Discussions thread
ForumParentFirstPreviousNextNext unread
Flat view
lukemike
New MemberPosts: 13
Like?
DXO - lens reviews - 300mm f/2.8 IS II - that bad ???
Oct 15, 2012

There's a lot of talking recently about DxOMark sensor tests.
I am considering buying one of the Canon's telephoto lenses so I took a look at their tests (http://www.dxomark.com/index.php/Lenses/Camera-Lens-Database/Canon).
I was utterly shocked when I saw the results. My question is are their resolution tests accurate?
Canon 300mm 2.8IS II which is considered one of the sharpest canon lenses (in line with 135 f2.0) scored lower (49lp/mm) than 70-200 f2.8 IS II (52lp/mm), 50mm 1.4 (63lp/mm)etc. I used all of these lenses and I do realize that 50mm is super sharp at f/4, and I am comparing apples and oranges (short focal with telephoto) but for crying out loud If I spend 16 times more on 300mm I do expect it to be at least at sharp as 50mm f1.4 at f/4
I went on line and googled all there is to google about DxoMark tests and I am really lost. To judge for myself I went to http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=111 and compared ISO 12233 Chart 100% Crops and I have to say that 300mm seems to be sharper or at least as sharp as 50 1.4 at f/4 and a few other lenses.
Can somebody please tell me: are these DxOMark tests right or not. Thank.you.

ForumParentFirstPreviousNextNext unread
Flat view
ForumParentFirstPreviousNextNext unread
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow