His sensor needs a bit of a clean.

 

Damn that's a lot of UFOs!

 

It was absolutley manky a few weeks ago when he posted a view of his sensor here -

http://www.flickr.com/photos/flyingbadger/2235903096/

I hope he's cleaned it since then

 

Its very early in the trip to have that much dirt

 

How do you take that kind of shot? My sensor was dirty a while ago (I could see marks in shots of blue sky) and I have since cleaned it but I was just wondering how I tell if I did a good enough job?

 

I assumed it was just small(est) aperture against a light surface.

Thats what I normally do

 

I select the smallest aperture and point the camera at the sky.

 

I hadn't had a chance to clean it before I left. I spent about half an hour giving it a good going over early evening before the gig / girls etc, so anything since that last night in Halifax should be ok.

I am indeed using GIMP, but only for border/rotation now. Using Bibble Pro for RAW conversion (can full screen the pics) and it's working ok.

As for checking the sensor, I stick it on f/22 and point it at a light coloured wall or similar. Something uniform anyway.

 

Errr I'm probably being a complete n00b but with what lens / zoom / focus etc?

 

That shouldn't matter a whole lot. At f22 nearly everything should be in focus and the perspective the lens gives shouldn't matter one way or another. However personally I use my 24-70 when trying to see dust.