dark rounded edges on the developed film and prints

[pacchu77]

Hi Everyone,

I am facing a peculiar problem with my Canon EOS 300X Film camera. I used a HOYA CR-Polariser for few of the shots off late. But later when it was developed I noticed that there were dark rounded edges on the developed film and prints as well. What might be the reason for the dark edges to appear? Is this the problem with the polarizer or the way it is supposed to be used. However, I had attached the polarizer in front of the UV Filter on a EF 28-90mm USM lens. Please see the attached scanned photos of the snaps with this issue.

Please suggest.

Thanks & Regards,
Prashanth

 

[MattKing]

The filters on your lenses are too deep - they are vignetting the image. It is sort of like putting a tube on the front of the lens.

Try just using one filter. It will be less likely to intrude into the edge of the image. You may also have to consider replacing the polarizer with another, shallower (and probably more expensive) version.

This is probably only happening when the zoom is at the wide end of its range.

Matt

 

[David A. Goldfarb]

Just leave off the UV filter with the polarizer. The polarizer will reduce UV exposure. The combination of filters is vignetting at the wide end of the zoom, as Matt says.

 

[pacchu77]

Hi Matt and David,

Thanks for your inputs. I now fully understand the problem and also experimented without the UV filter and only used the Polarizer. The results are just fine.

Thanks once again,
Prashanth