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Old 02-12-2008, 02:36 PM
solissydney (Ken)
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Cmos Reflections

Hi.
Question please.
Is Canon 300D the only camera with the problem of reflection from the Cmos, or do other digital camera's have the same problem, caused by brightly lit objects? like the Moon and street lights
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  #2  
Old 02-12-2008, 02:37 PM
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iceman (Mike)
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Hi Ken

It's usually to do with the lens, not the sensor. Do you have a filter on the front of your lens?
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Old 02-12-2008, 02:48 PM
solissydney (Ken)
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CMOS reflect

Yes, I do have a UV filter at the front of the lens. But the image of the street light was taken without that filter.
I will however look into at the problem concerning the lens, as you suggest.
The lens used was a Sigma 70 - 300 APO DG zoom lens.
Thanks.
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Old 02-12-2008, 02:55 PM
solissydney (Ken)
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CMOS reflect

By the way. In the past, when I would shoot bright stars I ofter got, what (looked like) a small companion star, but actually was a reflection. That is, when I did prime shooting. In other words, without any lens.
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Old 02-12-2008, 07:57 PM
solissydney (Ken)
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Cmos reflect

I have similar problems, as above, using my other lenses.
So back to my original question; does anyone, with other camera models, have reflections when imaging bright objects as per images above?
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Old 02-12-2008, 09:28 PM
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pvelez (Pete)
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I have a lurid blue swirl in many of my long exposures - I have a modded 350D. I had assumed it was amp glow

Pete
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Old 04-12-2008, 12:06 PM
pjphilli (Peter)
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Hi
It would be nice not to have to use things like light pollution filters, focal reducers etc in front of the imager (mine is a DSI2) but I often need to use these. I find that when long exposures are done the bright objects like stars can produce small dim new moon like reflections in my images. I have fiddled around trying to eliminate these but they seem always be there in some form. I take the coward's way out and go over my final adjusted image with a paint brush ie picking up the nearby colour (eg dark sky) and then brushing out the reflections. This usually takes only a few minutes. I trust this does not break the "ethics of adjusting" (LOL)?
Cheers peter
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Old 12-12-2008, 05:16 PM
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AlexN
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Cheaper lenses often produce lens flares, and random reflections on bright lights... My first camera was a Nikon D1 with a couple of cheap lenses... I initially thought that the camera had some kind of fault... because on all brighter lights and the moon, I would get these reflections... I bought a Nikkor 70-200 F/2.8ED and hey-presto, no more reflections.

Filters will cause ghosting and other reflections.

Alex.
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