I've had my t2i since around Sept of '11. Never really had a huge problem with it except the other day doing a still life assignment for school I noticed ONLY on MANUAL mode I get a black gradient at the bottom of the picture. (right side if in portrait mode) This appears on the LCD and also on my computer.

That was my first issue. My next issue is this...



I just did a random effect in PMP to show the problem. The pink in the bottom corner.


This appears in Photoshop and Photomatrix pro. Sometimes blue dots, or magenta. This has only JUST started. I took this photograph around sunset today and noticed this no matter what I try to figure out what it is. Sensor problem perhaps? I'm not sure.

EXIF:

ƒ/32 Manual Mode
AWB
Spot Metering

.5 second exposure, 1 second, and 1/4th.

T2i
Tamron 28-78mm ƒ2.8.
ND8 Filter.

Could i perhaps burned my sensor?

I'm also thinking that you've taken a shot with some black in it, and HDR'd it (maybe not literally, but something that amplifies whatever noise is there in the blackness). I'm more worried about those two red lines... what the heck are they? They look like they're lens rays from the lights, but they don't line up. What?

That's a relief about the red lines. Can you post an image that hasn't had any post-processing done to it? A RAW would be awesome, but they're big and you kinda need dropbox for that, I think.

After seriously tweaking on the controls, the only worrysome thing I see are indeed those two horizontal lines...

From what?

So you think it's just noise from the shadows being messed with?

I played with it too, and sure, I think that although a RAW will get you the ability to pull detail out of shadows to a certain extent, that wheel-arch is really really dark and you're expecting too much!

You will start seeing your frame turn black from the bottom up when you exceed the sync speed of your lighting system... Which it looks like you were doing, with a shutter speed of 1/250.

So back off your shutter speed a touch, and you'll be fine. 

And if you rotate that watch a bit you can lose the glare, too. You need to keep an eye on the incoming angle of the light relative to shiny surfaces vs. where you place your camera, to make sure you don't end up reflecting light right into the lens.