Is my XSi defective?

Here is a 100% crop. If you look closely on the body line between the A-pillar and the door, there is a stair case pattern / jaggies.

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OMG! Go throw that in a dumpster now! Dont even let it stay in the house with you overnight, its pure evil!!

Why do pixel peepers buy entry level cameras?

garycoleman wrote in post #6142549
I'm just being too paranoid?

I'll vouch for that one.

That's an 100% crop right?

Hi Garycoleman,

100% crop will show you a lot of stuff, which you really don't want to see.
But to be very sure about your investment, take more pictures (where you have minimum colors in the background)to see, if the problem repeats. Do the testing with light and dark backgrounds. If the problem repeats, then exchange the camera for a new one, if possible. Otherwise, call Canon service center. Be prepared with a lot of patience and evidence to show with the service department.

All the best!

Collin85 wrote in post #6142678
I'll vouch for that one.

That's an 100% crop right?

:o

yes it's 100% crop.

This is my first DSLR so I'm probably beeing too critical about everything. I always thought the anti-aliasing filter is supposed to eliminate the jagged pattern.

i had the same feeling when I just got my first dslr. Just take more pictures and compare. I DOUBT if there there is anything wrong with your xsi.

Definitely paranoia. Cure yourself by taking thousands of pictures.

Assuming you shot that as a jpeg, it is likely the result of jpeg compression -- the more compressed the jpeg, the more "artifacts" that show up. Try setting your jpeg settings to the highest quality/largest file and then check. If that doesn't work, switch to RAW and check the results. High quality pictures shouldn't show jaggies at 100%.

tonylong wrote in post #6144702
Assuming you shot that as a jpeg, it is likely the result of jpeg compression -- the more compressed the jpeg, the more "artifacts" that show up. Try setting your jpeg settings to the highest quality/largest file and then check. If that doesn't work, switch to RAW and check the results. High quality pictures shouldn't show jaggies at 100%.

I shot in RAW. When I viewed it at 100% in DPP in RAW, it still showed the jaggies. It is only a tiny bit worse in the converted JPG I posted.

Most of my nature and people shots don't show jaggies. It usually happens when I shoot light colored cars and the jaggies show up on the body gap lines.

The problem with your cars is the high contrast between the paintwork and the body gap lines. Anti-aliasing works by modifying the color of bordering pixels to something in between the paint and the gap. This works well when the transition is reasonably smooth, so that several pixels can be given different shades, from bright to black, to smoothen out the transition.

But here, the change from bright, almost white, to black is so abrupt, that already after two pixels or so, you should have gone from one extreme to another. There simply isn't resolution enough to smooth out such a transient. So you get jagged lines. And paranoia.

Try interpolating the image to 40 megapixels and see what difference that makes. Apart from making a HUGE TIFF file.

The quality of the lens can have a lot to do with a 100% crop.

Are you the real Gary Coleman?

AdamLewis wrote in post #6146846
Are you the real Gary Coleman?

If he is, it would certainly explain the angle of the shot....

sunbeast wrote in post #6146881
If he is, it would certainly explain the angle of the shot....

I was going to post that exact same thing but figured with my history, Id get banned for it