Do I have a Problem with my EF 100-400mm

Folks, Just returned back from South Africa - had an awsome time. here are some of the results.

All pictures were taken using a Canon 100-400

https://photography-on-the.net/forum/showthre​ad.php?t=231497

but here is my problem some of the images seem to show some noticable ghosting.. here is an example

what could be the problem me or the lens....

Exif Data:
Shutter Speed: 1/250th
Apeture: f5.6
Focal Length : 400mm
ISO 400
Metering: Pattern
Set to AV MODE on 30d

HTTP response: NOT FOUND | MIME changed to 'image/png'

HTTP response: NOT FOUND | MIME changed to 'image/png'

Focus appears not to be on the bird but the branches.

Carl.

arkturas, do you have a UV filter on?

I had similar effects with some of my pics and it seems to have been caused by the UV filter.

Yes I was using a UV filter, its a Hoya £30 pounder - looking now the ISO setting is far too high and I should have set the apeture to atleast f8 instead of f5.6.

any other comments - I really want to get to the bottom of this

Odds are that the ghosting is due to the UV filter which you have on the lens.

99% sure its the filter

Thanks gents

Should of used spot metering on your 30D and center focus point only for these shots to ensure focus accuracy. I also have a UV filter for my trombone, but don't use it, as I don't believe in those. If anything, I would of taken a cir polarizer there...

I would say the UV filter...

Looks like a cheap UV filter, try the Hoya pro 1 SHMC ones.

Alternatively a similar problem can happen if you shoot through a window.

Lester Wareham wrote in post #2171990
Alternatively a similar problem can happen if you shoot through a window.

Yeah, if you are in a vehicle shooting these images through a window... This is probably what caused it.

Why has no one mentioned the shutter speed??

1/250 is way too slow at 400mm, especially if the vehicle is idling.

I'm not convinced about the UV filter, but to put your mind at rest you should do some tests with and without anyway.

I've seen your other pictures and they look fine. I presume the filter was on for those too.

I use UV filters under one condition. If the conditions are so harsh so as to require protection of the lens. In Africa that might be the case. There are only 2 filters that I would use B+W Multicoated F-Pro and Heliopan. A cheap filter on a good lens is not good practice.

curiousgeorge wrote in post #2173490
1/250 is way too slow at 400mm, especially if the vehicle is idling.

Not with an IS lens it ain't, George...

Looks like a filter thing to me too.