Canon 100mm Lens odd problem

Started Mar 27, 2014 | Discussions thread
Shop cameras & lenses ▾
ForumParentFirstPreviousNextNext unread
Flat view
New MemberPosts: 2
Canon 100mm Lens odd problem
Mar 27, 2014

Hi all.

Just today i have noticed that my camera (canon 550d) and lens(canon 100mm 2.8) are not working properly.

I was taking pictures of something at f19 with a ring flash as i do normally but things were coming out massively overexposed.

I then experimened with no flash and it seems like at large apertures (f2.8ish) the pictures are exposing correctly, but then as i make the apertures smaller, the pictures are coming very overexposed.

I thought this was a fault with my camera at first, so tried a different lens, which worked perfectly, so i think it must be the lens that is at fault.

I have googled various things, and i think it may be a 'sticky aperture'?

I would be so grateful for any advice or how or where this can be fixed.

(i took the following pics to try and illustrate the problem)

Canon EOS 550D (EOS Rebel T2i / EOS Kiss X4)
If you believe there are incorrect tags, please send us this post using our feedback form.
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