DPReview.com is closing April 10th - Find out more

Weird shadow at the top of pictures

Started Sep 2, 2018 | Discussions thread
ThrillaMozilla Veteran Member • Posts: 7,681
Re: Weird shadow at the top of pictures
2

Matei111 wrote:

However, I noticed that this issue only happen at f4.5. When I switch it to f8 there is almost nothing.

Brightcolors is onto something.

You have two choices. Shutter or aperture. With the lens mounted on the camera, look backwards through the lens with the aperture open. If there is any obstruction, you should see it.

If there isn't an obstruction, the problem is probably the shutter. With another lens, take pictures of a uniform subject like a wall or piece of paper -- one at 1/4000 and another at say, 1/1000 or longer. Preferably 1/200 or 1/250 or longer.

People need to learn to look backwards through the lens. You can diagnose all kinds of problems by doing that.

 ThrillaMozilla's gear list:ThrillaMozilla's gear list
Canon EOS Rebel SL1 Canon EOS M6 II Canon EF 400mm f/5.6L USM
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow