20D vs. 7D Noise Test

I was sitting around the house last night and decided I would see how the 20D stacked up to the 7D in terms of noise. Of course we all know the results, but I was shocked at how fine the detail was on the 7D in the higher ISO's as apposed to the 20D, just shows what that 18mp can actually do. This is no professional test or anything, just taken in the living room at some objects on my mantle.

All images are straight from the camera with no PP, just 100% crops from the pictures. All the pictures were taken with the 28-135 on a tripod on F/11.

http://www.flickr.com …721576237646687​74/detail/

How come the 20d photos look closer/more zoomed in?

ZULater02 wrote in post #9931865
just shows what that 18mp can actually do.

sorry! I don't see much of a difference here besides the higher pixel density could actually be a disadvantage.

JoYork wrote in post #9932520
How come the 20d photos look closer/more zoomed in?

Not sure, I thought I cropped them the same size, but realized when I uploaded them to Flickr, the dimensions had changed.

FuturamaJSP wrote in post #9932545
sorry! I don't see much of a difference here besides the higher pixel density could actually be a disadvantage.

I was going by how detailed and sharp the image stayed in the higher ISO's. Yes it had noise, still not as much, but very detailed and sharp still, I.E. ISO 1600 on each Camera, then look at the metal and wooden end cap on the hanging picture frame. Also the color's stayed WAY truer.

JoYork wrote in post #9932520
How come the 20d photos look closer/more zoomed in?

Because a 100% crop of a smaller image will get rid of less information, which will make the frame appear larger.

griptape wrote in post #9933154
Because a 100% crop of a smaller image will get rid of less information, which will make the frame appear larger.

You have this backwards. If the image size is larger than a 100% crop will show a smaller area of that image so it should appear more "zoomed in."

The problem is that if both shots are taken at the same focal length and same distance from the subject then a 100% crop from both would not show the same framing. Since he has these shots framed the same they are either not 100% crops or something was changed when the shots were taken.

krb wrote in post #9933194
You have this backwards. If the image size is larger than a 100% crop will show a smaller area of that image so it should appear more "zoomed in."

The problem is that if both shots are taken at the same focal length and same distance from the subject then a 100% crop from both would not show the same framing. Since he has these shots framed the same they are either not 100% crops or something was changed when the shots were taken.

You're right. My mistake. It made sense in my head at the time.

Good point KRB! Apparently I cropped it wrong. I zoomed to 100% and tried to frame the area rather than think about how the size difference in the MP affecting the size of the picture. That's why I like this forum, you learn a lot, lol.

I re-tried 1600 on both from my pictures I had, rather this time creating a new blank document in PS with the same DPI and dragging the picture into the same size, if that makes sense. Here is what I got. Thanks for the clarification!