Canon 70D Review

 
Camera Reviews / Canon Cameras / Canon EOS i Review

Canon 70D High ISO Noise Reduction

The Canon 70D's four noise-reduction settings ("High, "Standard", "Low" and "Off") provide good flexibility in choosing how you want to make the trade-off between subject detail and noise levels. Since the Canon 70D user manual states noise reduction is applied at all ISOs, we've included crops from the base ISO below.

See for yourself how the Canon 70D's "Standard", "Low" and "Off" High ISO NR settings compare to RAW without noise reduction under daylight-balanced lighting. (Note that these RAW images also have no sharpening applied, so they're a little softer than camera JPEGs at low ISOs.) Click on any of the crops below to see the corresponding full-sized image.

High ISO Noise Reduction Comparison
Daylight-balanced illumination
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

1
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

2
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

4
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

8
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

1
6
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

3
2
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

6
4
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

1
2
8
0
0
"Standard"
"Low"
"Off"
RAW (no NR)
I
S
O

2
5
6
0
0

The Canon 70D's default "Standard" High ISO NR setting provides a good tradeoff between noise and detail at low to moderate ISOs, but it struggles to maintain the contrast detail at higher ISOs, especially in our red-leaf fabric (as many cameras do). We'd probably shoot with lower settings at higher ISOs and reduce noise ourselves with post-processing (or just shoot RAW). Note how the "Off" setting doesn't disable noise reduction entirely even at low ISOs, and that the "Low" setting does a pretty good job suppressing chrominance noise while leaving more luminance noise (and more detail) than the default "Standard" setting.

Also note there is a "High" setting (not shown), as well as a Multi Shot Noise Reduction mode that captures, aligns and averages four images for even lower noise with better detail, however we did not test that mode in the lab.

 



Print the hi_iso_nr page for the Canon EOS 70D digital camera reviewPrint this Page

Note: For details, test results, and analysis of the many tests done with this camera, please click on the tabs at the beginning of the review or below.

Follow Imaging Resource

Purchase memory card for Canon EOS 70D digital camera
Enter this month to win:

1 $300 Adorama Gift Certificate

2 $200 Adorama Gift Certificate

3 $100 Adorama Gift Certificate