Support me by shopping at B&H!
Canon EOS 600D / Rebel T3i Gordon Laing, April 2011
 

Canon EOS 600D / Rebel T3i results : Real-life resolution JPEG / RAW / High ISO Noise JPEG

Canon EOS 600D / Rebel T3i vs Sony Alpha SLT-A55 Real-life resolution (JPEGs using default settings)

 
Support this site by shopping below

To compare real-life performance we shot the same scene with the Canon EOS 600D / Rebel T3i and the Sony Alpha SLT-A55 within a few moments of each other using their best quality JPEG settings and base sensitivities.

Each camera was fitted with its respective kit lens: the EOS 550D / T2i with the EF-S 18-135mm IS and the D90 with the DX 18-105mm VR. Both lenses were set to f8 in Aperture Priority and adjusted to deliver the same field of view.


The image above was taken with the Canon EOS 600D / Rebel T3i at 100 ISO with an exposure of 1/400 and the lens set to 24mm f8; the original Large Fine JPEG measured 8.28MB. The crops below are taken from the areas marked with the red squares and presented here at 100%. The crops from the A55 show a slightly larger area due to its slightly lower resolution.

The EOS 600D / T3i becomes the fourth Canon DSLR to feature the company's 18 Megapixel APS-C CMOS sensor, following the EOS 7D, EOS 550D / T2i and EOS 60D. This gives it a 2 Megapixel 'advantage' over the Sony Alpha SLT-A55, and as mentioned above, explains why the crops from the latter show a slightly larger area.

Judging from the crops below taken with the kit lenses and lowest sensitivities though there's virtually no difference in real-life detail. The main differences between the images regard default processing styles and the quality of the lenses, along with any in-camera corrections applied to them. As we've seen before, the Canon defaults for this scene are warmer than the Sony, but the difference in this regard is fairly subtle.

There are however some noticeable differences when it comes to the optical quality of their respective kit lenses. Both perform well towards the middle of the frame, but towards the edges, the Canon kit lens suffers from a little softening and greater coloured fringing. As you'll see on the next page the fringing can be effectively removed from the EOS 600D / T3i RAW files, but they're certainly visible on JPEGs if you're looking for them.

Conversely the Sony A55 crops appear eerily free of coloured fringing. This could be down to superior optics in this regard, or in-camera processing cleaning them up, but the bottom line is JPEGs taken with the kit lens and default setting exhibit noticeably less fringing, which coupled with a little less softening in the corners produces a crisper result.

Ultimately as we've said before, you won't see the full benefit of the Canon 18 Megapixel sensor unless you fit a better quality lens. The standard kit model may be fine for undemanding day-to-day use, but fit it on the 600D / T3i and it'll deliver images with roughly the same amount of detail as a camera with 15 or 16 Megapixels.

Now head on over to our Canon EOS 600D / Rebel T3i Real-life RAW resolution page where we've compared the same crops but this time from RAW files. Alternatively head straight to our High ISO Noise results.


Canon EOS 600D / Rebel T3i : JPEG
with Canon EF-S 18-55mm IS II
 
Sony Alpha SLT-A55: JPEG
with Sony SAL 1855 SAM
f8, 100 ISO
f8, 100 ISO
     
f8, 100 ISO
f8, 100 ISO
     
f8, 100 ISO
f8, 100 ISO
     
f8, 100 ISO
f8, 100 ISO


Canon EOS 600D / Rebel T3i results : Real-life resolution JPEG / RAW / High ISO Noise JPEG


If you found this review useful, please support us by shopping below!
All words, images, videos and layout, copyright 2005-2014 Gordon Laing. May not be used without permission.

/ How we test / Best Cameras / Advertising / Camera reviews / Supporting Camera Labs