My digicam puts a blemish on all my pictures.
 

asdfasdfaf

hmm that is strange. I would take it to a camera shop.

if you can open it safely and buy a small can of compressed air you might be able to lightly blow it out. It also depends on if the lens is sealed and impossible to do this though.

Or get a new lense.

MAYBE YOUR FINGER IS ON IT AMI RIGHT OR WHUT

Ugh.

FUCK YOU I'M CAP'N CRUNCH YOU DON'T KNOW ME

So I gathered.

That boy's avatar used to be a guy balancing a pumpkin on his penis. Those were better days, I 'spose.

Could be a defective line in the CCD array. Basically in a digital camera the photosensitive surface is split into a number of blocks and lines like this:

[][][][][][][][][] <- each block is sensive to light
[][][][][][][][][]
[][][][][][][][][]
[][][][][][][][][]
[][][][][][][][][]
[][][][][][][][][]

In order to read all of the data from the array into memory (for processing and eventual storage) it is necaccary to read the data off a line at a time:

[][][][][][][][][] -> data
[][][][][][][][][] -> data
[][][][][][][][][] -> data

I guess if one or several of these lines was malfunctioning in some way it would cause your images to display a line of missing information.

[][][][][][][][][] -> data
[][][][][][][][][] -> fucked
[][][][][][][][][] -> fucked
[][][][][][][][][] -> data

...or I could be talking bollocks and you just have a hair under the lens.

asdfasdfas

If you have a vibrator you could try seeing if it could dislodge the object.