[Codazzle]

Hi forum,

I am running into a strange problem I hope someone can help me with. Didn't see a solution on the internet anywhere.

I was recently going through my photos on a bright day, and noticed a weird L shaped mark on all my photos when my lens was stopped down. Thinking it was my lens, I did some tests and noticed that it is in ALL photos in the same place, regardless of focal length, leading me to believe it's my camera. I don't see anything in my view finder, and the mark gets less sharp as I open the aperture up and is essentially gone by f5.

The example is circled in red below with a photo at f22. The other is at f2.8. Could this be a dirty sensor? I don't really wanna touch it unless that is the problem

Thanks guys

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[vonBaloney]

Yeah, on the sensor. Or, if only one lens does it, small chance it is something on the rear element.

[JinDesu]

Yes. It's dust on your sensor.

And from the size of it, it's a nice big piece of dust. Which is also supported by the fact that you see it up till f5. Being that big, a blower like the Rocket Blowers would have no problem removing it.

[Adam]

Indeed, this is what you need:
Giottos Rocket Air Blaster, Manual Air Blower with Bulb AA1900

It also does an excellent job of cleaning your keyboard.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



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[Codazzle]

Excellent.

I actually can see it looking closely at the sensor.

Thanks for the quick reply guys!