Pentax 20-40 samples request at 40mm

Started Jan 14, 2017 | Discussions thread
ForumParentFirstPrevious
Flat view
DavidB77
DavidB77 Forum Member • Posts: 64
Pentax 20-40 samples request at 40mm

Hi all,

I just returned my copy of the 20-40 because I think it has a problem. It is sharp at 20mm but at 40mm edges are really soft, out of focus I think, while they should be sharp up to the infinity.

I am not sure if this is just my lens or all 20-40. People said that this lens is a jewel but I cant found any samples of landscape (not close range) shot at 40mm f/8.

Could anyone post samples shot in these typical conditions (f/8 at 40mm, distant subject)? 100% crop of left or right edge, or fullsize.

Here is what I get, compared to my 8-year-old sigma 17-70.

Do you think it is normal IQ for this lens at 40mm?

Thanks.

 DavidB77's gear list:DavidB77's gear list
Pentax smc DA 70mm F2.4 AL Limited Pentax smc DA* 300mm F4.0 ED (IF) SDM Pentax K-3 II Pentax smc DA 35mm F2.4 AL Pentax smc DA 50mm F1.8 +2 more
ForumParentFirstPrevious
Flat view
Post (hide subjects) Posted by
ForumParentFirstPrevious
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow