Canon EOS 450D / Digital Rebel XSi Gordon Laing, April 2008
 

Canon EOS 450D / XSi results : Outdoor resolution / Studio resolution / Real life Noise

Support this site by shopping at Amazon

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Canon EOS 450D / XSi resolution comparison

  To measure and compare the Canon EOS 450D / XSi's resolving power we photographed the Enhanced Digital Camera Resolution Chart with it and a number of rival cameras, each using their best quality JPEG and default image tone and sharpening settings. Each lens was tested at every aperture setting and the best result selected for this page.

The crops are taken from the original images, saved as High Quality JPEGs in Photoshop CS2 and presented here at 100%. Each number represents 100 lines per picture height (lpph), so a figure of 20 means a resolution of 2000 lpph.

In terms of resolving power, the Canon EOS 450D / XSi delivers 2200 and 2225 lpph of horizontal and vertical resolution respectively when equipped with the standard EF-S 18-55mm IS kit lens. This is a measurable increase over its predecessor which scored 2000 and 2100 lpph of horizontal and vertical resolution respectively when fitted with its kit lens; it's also an improvement over the EOS 40D even when equipped with a prime lens.

The Sony Alpha A350 scores highest here as you'd expect with its 14.2 Megapixel sensor, although the biggest difference is in horizontal resolution. Interestingly if you take the other 12 Megapixel DSLRs we've tested, including the Canon EOS 5D, Nikon D300 and Sony Alpha A700, all three score measurably higher in this test than the EOS 450D / XSi, although all three were also equipped with higher quality lenses.

We repeated this test using a Canon EF 50mm f1.2L lens at f8 and found the 450D / XSi could certainly deliver a better result: 2250 and 2300 lpph of horizontal and vertical resolution respectively, placing it roughly equal to the Nikon D300, although both the Canon 5D and Sony A700 just squeezed ahead.

To see RAW results for this test, scroll to the bottom of the page. Alternatively, head straight over to our real-life noise results to see how it performs across its sensitivity range.

Note Sony has asked us to describe the A350 sample tested as a pre-production model, but running the same version 1.0 firmware as final retail samples, we're confident the output below is close or identical to what you can expect. We will update this page with results from a final retail A350 in the future.


Canon EOS 450D / XSi
with EF-S 18-55mm IS
Canon EOS 400D / XTi
with EF-S 18-55mm
Canon EOS 400D horizontal resolution
2200 lpph, EF-S 18-55mm IS at 35mm, f8, 100 ISO
2000 lpph, EF-S 18-55mm at 35mm, f8, 100 ISO

Canon EOS-40D
with Canon EF 85mm f1.8 USM
 
Sony Alpha DSLR-A350
with DT 18-70mm
1950 lpph, 85mm, f8, 100 ISO
2500 lpph, DT 18-70mm at 35mm, f8, 100 ISO


Canon EOS 450D / XSi
with EF-S 18-55mm IS
Canon EOS 400D / XTi
with EF-S 18-55mm
Canon EOS 400D vertical resolution
2225 lpph, EF-S 18-55mm IS at 35mm, f8, 100 ISO
2100 lpph, EF-S 18-55mm at 35mm, f8, 100 ISO

Canon EOS-40D
with Canon EF 85mm f1.8 USM
 
Sony Alpha DSLR-A350
with DT 18-70mm
2100 lpph, 85mm, f8, 100 ISO
2250 lpph, DT 18-70mm at 35mm, f8, 100 ISO


Canon EOS 450D / XSi Studio resolution: JPEG versus RAW

We photographed our test chart in the EOS 450D / XSi's RAW plus Large Fine JPEG mode, allowing us to directly compare images created from exactly the same data. Below are crops taken from the original JPEG file alongside the RAW version, processed in Canon's supplied Digital Photo Professional 3.3 software using the default settings (Sharpness of 3). The RAW version, even without tweaking, reveals cleaner and better defined details, although this is mostly down to a boost in sharpening.

So like the EOS 40D before it, the 450D / XSi's JPEG files can certainly handle a little additional sharpening, but the RAW result is ultimately preferred. So if you want the crispest detail from the 450D / XSi, either increase the in-camera sharpening by a notch, or better still, shoot in RAW. Now let's check out the camera's performance at different sensitivities in our Canon EOS 450D / XSi noise results page.


Canon EOS 450D / XSi JPEG
with EF-S 18-55mm IS
Canon EOS 450D / XSi RAW
with EF-S 18-55mm IS
2200 lpph, EF-S 18-55mm IS at 35mm, f8, 100 ISO
2200 lpph, EF-S 18-55mm IS at 35mm, f8, 100 ISO

Canon EOS 450D / XSi JPEG
with EF-S 18-55mm IS
Canon EOS 450D / XSi RAW
with EF-S 18-55mm IS
2225 lpph, EF-S 18-55mm IS at 35mm, f8, 100 ISO
2225 lpph, EF-S 18-55mm IS at 35mm, f8, 100 ISO


Canon EOS 450D / XSi results continued...

Outdoor resolution / Studio resolution / Real life Noise

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