Can Pentax make A Decent Lens? Ricoh have not fixed QC issues...

Started May 18, 2014 | Discussions thread
Shop cameras & lenses ▾
Trevor G OP Veteran Member • Posts: 6,541
Re: Please use better experiment protocol - please give further details why...

Younes B wrote:

jf_tea wrote:

shallow DOF at f/1.8

That's exactly where you test a lens.

It should be sharp on both sides wide open, not just on one side.

One side indicates decentring, or skew I am now calling it.

subject distance at left vs. right is significantly different.

Please use better experiment protocol.

+1

Test is not conclusive of decentering.

What do you think it shows?

-- hide signature --

Cheers
Trevor G
Silkypix tutorials at: http://photo.computerwyse.com

Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow