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Photography Question 
Sabrina E. Hull
BetterPhoto Member Since: 5/3/2007

Hazy Pictures? - could it be from smoking

I have a Canon 20d that was given to me. The pictures have a haze on them. I also have a Canon xt that I have taken used to take pictures at the same time with. The pics from the 20D are always hazy no matter what lens, ect and the pics from the Xt are fine. The person who gave me the 20D was a heavy smoker and he keep the camera in the truck where he smoked alot. Can the smoking cause the haziness or could it be heat/cold from being in the truck?

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9/11/2008 4:16:18 PM

Alan N. Marcus   Hi Sabrina,

First let me suggest you make a side-by-side test as subjective judgments can be misleading.

The Canon 20D, like all digital cameras, depend on a CMOS sensor pronounced 'see-moss' otherwise known complementary metal-oxide-semiconductor. This solid state device is the ‘goodie’ that replaces film.

It is the dream of the photo engineer to cause these sensors (film too) to mimic the human eye as to sensitivity to light. Sorry to report that both film and chip fail in this regard. In the case of the CMOS, a cover glass is used to protect the chip’s delicate surface. Now this cover glass is an ideal portico to cuddle a filter. Thus an IR filter is incorporated with the cover glass; this forces the chip to more closely mimic the human eye.

Knowing you friend was a heavy smoker rings an alarm. We can suspect that the cover glass and the lenses have been coated with cigarette smoke residue.

While this might prove bogus, consider yourself forewarned. Cleaning the cover glass is relatively simple, internal lens damage can be too costly to undertake.

Again; a side-by-side test should be preformed.

Alan Marcus (marginal technical gobbledygook)

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9/12/2008 7:40:33 AM

Sabrina E. Hull
BetterPhoto Member Since: 5/3/2007
  Thanks for your help!!

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9/12/2008 8:17:56 AM

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