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View Full Version : Why does my camera do this???


mkgino
02-13-2004, 03:52 PM
Wtf is this white thing?? It happens once in a while and I dont know what it is? It also happens in like random places also. WTF!!!!!!!!!!!!!!!!!!!!!!

mkgino
02-13-2004, 03:56 PM
WTF??

EMPOWERD
02-13-2004, 04:36 PM
It may be (what professionals call it) chromatic aberration. It's basically flaws in the optic glass from the manufacturer. Nothing you can really do about it, just the way certain light hits the optic lenses. If you have a reflex type camera, you can purchase "achromatic lenses" to rectify the problem.

TiemenT
02-13-2004, 11:26 PM
3 words:

clean the lens

AlpWhitE46
02-14-2004, 12:11 AM
clean the cumshots tard..

;)

Slowered318
02-14-2004, 01:45 AM
Could be some paranormal activity?

...you must have the ghosts of past man-whores following you around :P

Lennon
02-14-2004, 02:01 AM
Originally posted by AlpWhitE46
clean the cumshots tard..

;)

Ha, I was waiting for someone to say that.....

Bill Gates
02-14-2004, 03:00 AM
actually this is caused by light from the flash that has reflected off dust particles or insects in the air. This usually occurs more frequently in the following condition:

- When shooting with a high aperture value in the aperture-priority AE mode.

This is a phenomenon that occurs with digital cameras and does not constitute a malfunction.

their was a write up on this on the canon site. also, i think it in the manual somewhere under troubleshooting....

Their recommendations:
1) Take flash photos in a non-dusty environment.
2) Use an external flash on your hot shoe to move the flash further from the lens and reduce the chance of lighting up dust right in front of the lens.

mk, i don't think your camera has a hot shoe (adapter) to mount an external flash. sorry.

Chromatic Aberrations aka (purple fringing) is something different. looks like this...
hope this helps...

Bill Gates
02-14-2004, 03:06 AM
here's Canon's official response in their FAQ...

Category : Difficulties with images and image quality
Description : White circles appear on the image.

Appearance of Suspended Particles when Shooting with Flash

Symptom
When shooting with flash in a location where there are many suspended particles, such as in a dusty area or on a snowy day, the image may contain white circles as shown in the picture below.


Why does this happen?
If the flash fires when a suspended particle floats right in front of the lens, the reflection of the flash from the particle appears more intensely than that of the subject, as the particle is much closer to the lens than the subject.

Therefore, the reflection of the flash turns out in the image and causes an effect such as that shown in the sample image above.
The closer the lens and strobe are located, allowing suspended particles to be exposed to more light, the more frequently this effect can occur.

How can I avoid this effect?

Ideally, it is best to shoot in locations where there are very few suspended particles. If not, you can use following method to prevent this effect.
a) Avoid using flash by lighting the area as much as possible.
b) If your camera has a zoom function, shoot at a wide angle.
c) If you can attach an external flash, use the external flash to distance the flash from the lens.

mkgino
02-14-2004, 03:52 AM
Thanks everyone for your help. Im glad its not a malfunction with the cam.

sonic07
02-18-2004, 06:00 AM
Originally posted by mkgino
Thanks everyone for your help. Im glad its not a malfunction with the cam.

malfunction or not for a peace of mind return it and get your money back and invest it on the next better camera. just a thought.