It is very important to keep your camera’s sensor clean.
Dust shows at small apertures, like f/16:
f/16, and that looks OK until you look at the small
See those dark dots? That is sensor dust.
You can try to get it off with the self cleaning mechanism, see the top picture. Or with a blower (be careful – use a full battery). Or with pads and liquid, but that is potentially dangerous – one mistake and your camera is toast.
So the best way is to keep the dust off in the first place, and to minimize the effects
- Use the self cleaning mechanism.
- Avoid lens changes unless necessary
- Shoot at larger apertures if it’s all the same to you 🙂
- When changing lenses, try to do it in a safe dust-free place
- Hold the camera upside down (-ish) when doing it, so that large dust falls out of, rather than intio, the camera
I regularly clean my sensors -looks like my 1Ds is ready for another cleaning, from that photo.
Bonus question: how do you know I was shooting at a small aperture?
Answer: because of the starburst from the street light. The smaller the aperture, the more starburst effect.