Showing results for 
Show  only  | Search instead for 
Did you mean: 

Does in-camera image correction apply to RAW


Auto lighting optimizer

Long exposure noise reduction

High ISO speed noise reduction

Highlight tone priority


I did some test shots with these and I see no difference in the raw files.  Do these only apply to the JPG format?


The 5D3 manual says on page 143 under the high ISO speed NR that playing back a RAW image with the camera the affect may look minimal.  I'm not seeing it at all at 100% in Photoshop.



It is my understanding the basic exposure and ISO settings affect RAW and nothing else.

EOS 1DX and 1D Mk IV and several lenses!

Auto Lighting Optimizer applies to jpeg only. It works with RAW only when you use Canon's DPP. Photoshop will not know what to do with it in RAW.

Highlight tone priority applies to RAW. To test it, find contrasty areas. If you use RAW, don't bother you can do it yourself PP. HTP robs you of some ISO. Minimum ISO is also limits the upper ISO also.
Diverhank's photos on Flickr


Diverhank has it mostly right. HTP will apply to the RAW.  AutoLighting Optimizer will apply only if using Canon Digital Photo Pro software, otherwise Photoshop ignores it. Long Exposure Noise Reduction does apply to the RAW, while high ISO noise reduction done in camera will not apply unless using Digital Photo Pro.


Digital Photo Pro has the ability to take most of the Canon proprietary settings- like Auto Lighting Optimizer and High ISO Noise Reduction, and apply them to the RAW file, as if it was being done in camera to a jpeg a image. Programs such as Lightroom and Photoshop do not recognize those tags. My advice would be to install DPP and process the same file both in DPP and Photoshop.  You should see a difference there.

I am a Canon employee. The opinions stated in my posts are my own and do not in any way reflect the opinions of Canon Inc, Canon USA, or any subsidiaries, affiliates or partners.


I have DPP loaded on my computer but I always use PS or LR to process RAW files.

I can't argue about the price because Canon provides DPP free with the camera. But PS and/or LR offer way more adjustments than DPP whether they interpret Canon's tags or not.

EOS 1DX and 1D Mk IV and several lenses!

If you shoot RAW, all of those correction can be done easily post processing. I recommended you turn those features off because it will change your histogram display which is based on your jpg image.
Weekend Travelers Blog | Eastern Sierra Fall Color Guide
03/14/2023: New firmware version 1.8.1 is available for EOS R6

03/02/2023: New Firmware Updates Are Available:

EOS R7 - Version 1.3.0EOS R10 - Version 1.3.0
02/24/2023: We've updated Share Your Photos

2/07/2023: New product announcements!

EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM
01/18/2023: New firmware version 1.1.1 is available for EOS R6 Mark II
01/09/2023: Help ensure your autofocus is properly aligned with a Canon Precision Alignment
01/03/2023: Welcome to CES 2023!
12/08/2022: New firmware version is available for EOS C70
12/07/2022: New firmware version 1.7.0 is available for EOS R5
11/22/2022: New firmware available for EOS R3, EOS R7 and EOS R10
11/16/2022: We're thrilled to be ranked among the Best Employers for Veterans in 2022 by Forbes.
08/31/2022: New firmware version 1.1.1 is available for RF 70-200mm L IS USM
08/09/2022: New firmware version 1.2.0 is available for CR-N 300
08/09/2022: New firmware version 1.2.0 is available for CR-N 500
07/14/2022: New firmware version 1.0.1 is available for CR-X300
06/10/2022: Service Notice:UPDATE: Canon Inkjet Printer continuous reboot loop or powering down
06/07/2022: New firmware version 1.3.2 is available for PowerShot G7 X Mark III
05/31/2022: Did someone SAY Badges?
05/26/2022: New firmware version is available for EOS-C500 Mark II
05/26/2022: New firmware version is available for EOS-C300 Mark III
05/10/2022: Keep your Canon gear in optimal condition with a Canon Maintenance Service
05/05/2022: We are excited to announce that we have refreshed the ranking scale within the community!
04/26/2022: New firmware version is available for EOS R5 C
03/23/2022: New firmware version is available for EOS-C70
02/09/2022: Share Your Photos is back!
02/07/2022: New firmware version 1.6.1 is available for EOS-1DX Mark III
01/13/2022: Community Update. We will be retiring the legacy profile avatars on 01/20/2022. Click this link to read more.