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Odd photo anyone know why?

deavilin 13 344 1 United Kingdom
17 Oct 2011 9:03PM

Hi I have posted this photo I took whilst away this week and wondered if anyone can explain what happened, it looks like a double exposure or as if I moved the cam, I am sure I did not. The speed was 1/1600 so movement would I would have thought not been an issue. ISO 640 & f11. Any ideas guys?


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discreetphoton 13 3.5k 20 United Kingdom
17 Oct 2011 9:18PM
If it wasn't for the speed, I'd think that the VR had reset it's position mid-fire, but it seems unlikely. Looks like a possible write error. Format the card ASAP.
stomp 16 203 England
17 Oct 2011 9:28PM
What are the image file numbers on the files before and after this image?

User_Removed 14 17.9k 8 Norway
17 Oct 2011 9:30PM
From the clarity of the mid to foreground shingle I would say that this is not a 'movement' issue.

Additionally, the visible problem is 'localised' within the image area.

I am inclined to agree with David and say that this is an electronic issue and that the card needs to be reformatted - in camera - as a first step and from there, attempt to replicate the shoot and see if the problem repeats itself.

If it does, then replace the card (with a previously camera-formatted card Wink), shoot the same scene again and recheck.
oldblokeh 7 1.2k United Kingdom
17 Oct 2011 9:32PM
I'd say that it's definitely not a write error. If it were, you would get a corrupted file, not two superimposed images where you have got tonal values added together. Nor would it be a VR issue, as it would need a pretty much instantaneous shift between, effectively, two 300 microsecond exposures which I don't think is feasible. If you look closely, you can see that the arm of the chap holding the fork is closer to the shaft of the fork in one image than in the other, superimposed image. This suggests a gap between captures of a reasonable fraction of a second at least. Ithink that this is an inadvertent double exposure, though whether due to a camera software error or a user mishap I can't say.
MrGoatsmilk 9 1.5k England
17 Oct 2011 10:16PM
Is it a Nikon? I'm sure on the D90 (perhaps other models and makes too) it allows you to take a shot then take another over the same frame. Just like exposing a film shot then winding it back and shooting again. Was this on in the settings?

User_Removed 8 4.6k 1 Scotland
17 Oct 2011 10:37PM
You have got two diagonally shifted images. There is no blur between the two positions - which you would have got had it been camera movement.

My money is on a lens problem. I just can't see that effect being achieved by any malfunction of the sensor or card.

But I am guessing without any real ideas.
oldblokeh 7 1.2k United Kingdom
18 Oct 2011 8:25AM

Quote:You have got two diagonally shifted images. .

There are two non-identical diagonally shifted images. Let's do some measurement and maths here. I'll make one or two assumptions. First, assume that the fork handle is 5cm diameter. My measurements show that in the upper right instance the hand is approximately 6 times further from the fork handle than in the lower left instance, the distance being about 5/7 of a fork handle width. This would be a distance of of about 36mm. The quoted shutterspeed is 1/1600. In order for this movement to have been captured during a single exposure the hand would have to be moving at a speed of at least 57 metres per second, which is approximately 130 mph - unfeasibly fast. However, there is no sign of blur in the image, so to account for the appearance there would have to be half the exposure with the hand close to the fork and the other half with the hand further from the fork, with the hand moving at a colossal speed between the two.

If one were to put an upper limit of 1 metre per second on the hand movement (which I think is rather high, given the circumstances), this would put a lower limit of about 1/30 second between exposures. There are other clues. If you look carefully you can see the in the upper right image the fork is further into the sand than in the lower left one. Futhermore, looking at the groynes there appears to be some rotation between the two images which could not be accounted for by malfunction within the lens.

It's quite clearly a double exposure.
Sooty_1 7 1.5k 221 United Kingdom
18 Oct 2011 8:25AM
Definitely a double exposure - the shutter has been actuated twice, a fraction of a second apart. The only person moving noticeably in the shot is the one on the right, but this shows the images were captured at separate times.

deavilin 13 344 1 United Kingdom
18 Oct 2011 8:50AM
Hi Guys

Thanks for your thoughts on this one it was an odd one to me. When I saw this on the camera I thought there was something wrong with the cam so shot off 22 in rapid fire and all were okay plus I have not had anymore since.

Regards Charlotte
deavilin 13 344 1 United Kingdom
18 Oct 2011 2:56PM
As someone said that the exif file would be useful it is now uploaded with the photo, there is no where there that is says it is a double exposure, really odd one me thinks Smile

digicammad 14 22.0k 39 United Kingdom
18 Oct 2011 3:22PM
Definitely looks like a multiple exposure image to me. Is it possible you have that function assigned to one of the buttons and accidentally caught it when taking the shot?

Has it only happened once? If so it is worth reading up on multi-exposure in your manual (if the camera has it), finding out how it is controlled and checking those settings.

If your camera does not have that mode it looks like it could be an electronic fault. Have you been aware of your camera firing twice when you only expected one?
keithh Plus
14 25.4k 33 Wallis And Futuna
18 Oct 2011 3:22PM
Could you have captured their souls?
Carabosse 15 41.1k 270 England
18 Oct 2011 3:43PM
No it's their auras that have been captured. Smile
deavilin 13 344 1 United Kingdom
18 Oct 2011 3:58PM
Hi Ian I had not changed anything withing the camera, and it has not repeated it again since. I think it was a glitch you know just one of those things Smile

I have the multiple exposure in the shooting menu and that is set to off, I don't think it means the same thing as I have just tried it and it only does the amount of shots you set it to not one on top of another as in this file Smile


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