The lens attached was 24-70 F2.8L with a Hoya Pro UV filter on. Focal length 70mm, lens hood attached.
As you can see from the pictures, the sun was to the right of me, slightly behind.
Here's another, where the ghost image is a little more indistinct: .
Since this doesn't show up through the viewfinder, my guess is that it's coming in though the viewfinder. I guess that since the camera is portrait at the time (90' anticlockwise), maybe my (right) eye is not making as much contact with the rubber eye piece and allowing an image to sneak in?
I need to test more to find out I think.
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
Since this doesn't show up through the viewfinder, my guess is that it's coming in though the viewfinder. I guess that since the camera is portrait at the time (90' anticlockwise), maybe my (right) eye is not making as much contact with the rubber eye piece and allowing an image to sneak in?
Since the secondary mirror is opaque, I would think that with the mirrors up (during exposure) there would not be any path from the viewfinder into the mirror box (and thus ultimately to the sensor).
This could possibly be a reflection of the face of the sensor returned from the back of the UV filter.
Interesting ideas, I need to do some more testing.
I'm guessing that maybe it's not the filter, because I have had the filter on the same lens for years and never seen this type of effect, this lens has been on a 5D (Mk 1) and 1D2 and 1D3. Also, other shots taken just after or just before do not show this, although they are landscape format shots of the same subject in the same light.
On the subject of light getting in via the viewfinder - in the 1D manual it says: "...stray light entering the eyepiece can adversely affect the exposure." - that's why they have an eyepiece shutter. I initially read this to mean the exposure settings (i.e. metering), but it could be read as affecting the image.
More tests needed when I can get out and about again. I certainly need to be more scientific about this.
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
On the subject of light getting in via the viewfinder - in the 1D manual it says: "...stray light entering the eyepiece can adversely affect the exposure."
Yes, this means by way of an effect on exposure metering. (It's a thing I often forget, to my regret. I keep the "cork" for my 40D eyepiece in the bag, but rarely think to use it!)
Best regards,
Doug
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
I managed to reproduce it quite by accident this evening inside. It's is a reflection of something that is just outside the field of view of the lens, and the filter makes no difference.
I tracked it down because I recognised what it was a reflection of, when it appeared against a dark foreground. The unfortunate thing is that I can't see it through the viewfinder - it only seems to appear in live view mode. Now I know what I am looking for I can track this down a little easier, and experiment with other cameras too.
White Balance so easy, even our 5 year old can do it.- Melissa Strickland
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Linear Mode
