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What causes this please?

AlanJ Plus
5 972 England
30 Dec 2013 7:35AM
Taken for one of the weekly challenges. There is a "ghost" around the image. Particularly at the top of the cheese.
Canon 650d 17-55 2.8 and on tripod


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CTee 11 129 United Kingdom
30 Dec 2013 8:23AM
May not be the answer but did you switch off anti-shake ? As it can cause problems when used whilst on a tripod as it is trying to resolve a problem which doesn't exist and induces a vibration in the process. Some models of cameras can handle this situation others can't. Also did you press the shutter directly? This can still induce movement either use a trigger or in the case of a still subject use the timer function so you press the shutter and the camera delays the taking of the picture by 2 seconds so any movement has stopped.
Hope that helps Smile
AlanJ Plus
5 972 England
30 Dec 2013 8:34AM
Thanks Colin. The stabiliser was on. So maybe that was it!
I used a remote to release the shutter.
Thanks for the reply. I will try set it up again and see if that works. Cheers Smile
oldblokeh 6 1.2k United Kingdom
30 Dec 2013 8:54AM
Also, make sure everyone in the house is still if you have wooden floors. It's amazing how much movement there can be even from someone walking in another room on the same floor.
rayme330 6 17 1 United Kingdom
30 Dec 2013 9:26AM
You can't set this shot up again Alan, the subject will have been eaten. Grin

JackAllTog Plus
9 5.0k 58 United Kingdom
30 Dec 2013 10:06AM
The cheese is going out of focus so part of the ghost there is the bokeh of being out of focus - If you do set it up again try f8 as well as f2.8.
elowes 13 2.8k United Kingdom
30 Dec 2013 10:18AM
It is very unlikely the IS would cause this affect only in part of the image. It is the shallow depth of field.
oldblokeh 6 1.2k United Kingdom
30 Dec 2013 10:20AM
If you look closely, though, none of the image is sharp.
Sooty_1 7 1.5k 221 United Kingdom
30 Dec 2013 10:35AM
It isn't unsharpness or focus. It's definitely vertical movement...probably camera movement. The cheese and grapes have the same sized halo despite being different distances. Perhaps your tripod head isn't perfectly rigid, or it flexed slightly, or even vibrations from the floor may have caused it. The actual movement is only a fraction of a mm.

If you try again, set the self timer, that way there will be no touching the camera at the moment of exposure.

sherlob Plus
12 2.9k 129 United Kingdom
30 Dec 2013 11:07AM
Definite movement in my humble opinion. It could be that the IS was trying to compensate for movement that wasn't there (although I haven't personally had this problem when using IS). I think it more probable that the camera was moved - e.g. did you use a cable release or self timer to reduce movement when depressing the shutter? What was your shutter speed? (As oldblokeh states above wooden floors can be a problem, and you need a sturdy tripod). I had very soft images when using a tele lens on a tripod until I realised that the mirror's movement was leading to camera movement - mirror lock up helped eliminate the problem.
EddieAC Plus
13 2.0k 2 United Kingdom
30 Dec 2013 11:09AM
Sometimes the movement of the mirror when taking the photo can cause vibrations and may have contributed if it wasn't the cause. You can try taking the shot in live view mode next time as the mirror will already be out of the way.
indemnity 9 334
30 Dec 2013 12:02PM
Movement is camera not subject. Is tripod on solid floor or carpet? Was it weighted?
shakeyhands 5 445 Canada
30 Dec 2013 12:17PM
Alan, I bet your hands were shaking from a "wee" bit over indulgence the night beforeWink and the vibrations travelled though the remote remote cable Grin TongueTongue

petebfrance 6 2.7k France
30 Dec 2013 12:41PM
A lot depends on how stable the tripod is and how gentle / violent the camera mirror movement and shutter are. I have an old Cobra tripod (standard, low cost aluminium tube) but although the head locks reasonably well the column is a bit wobbly - combined with the mirror-up movement (mirror-lock helps here) and focal plane shutter that can be quite violent this tends to lead to movement.

I currently use a bridge camera and for photos on the table-top I always put it on the same table-top if possible (we have wooden floors), support with books, use time delay and hold the thing firmly with a lot of downwards pressure to counteract the 'give' in the books. I've had quite a few showing movement when I haven't held it firmly enough.....
30 Dec 2013 12:44PM
I had a similar effect, if even more pronounced, under some of energy saving bulbs. Maybe hard to believe, but this is true.

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