Quality discrepancy between internal Live View and Webserver

Support and help for digiCamControl (no bug report)
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lenny
Posts: 1
Joined: Mon Oct 18, 2021 2:29 pm

Quality discrepancy between internal Live View and Webserver

Post by lenny » Mon Oct 18, 2021 2:43 pm

Hello everyone, hello Duka,

thanks for this great piece of software. It really helps me working with my DSLR.

One thing I stumpled upon was some kind of quality discrepancy between the internal Live View image quality and the quality of the given jpg by the webserver.

The internal Live View image has no compression artifacts, but the 'liveview.jpg' from the webserver is heavily compressed (a lot of JPG artifacts). (The same for the MJPEG livestream).

I want to process the 'liveview.jpg' in Python, but sometimes it's very difficult because of the heavy compression.

There must be a reason for this, but I wonder if there's a way to get a better Live View image quality?

And I don't mean a better quality of the Live View in general, because I know the cameras are limited in that regard.

By the way I am using an EOS 550D, but this shouldn't matter I guess.

Thanks and cheers,
Lenny

Quality discrepancy between internal Live View and Webserver

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admin
Site Admin
Posts: 225
Joined: Tue Sep 15, 2015 8:33 pm

Re: Quality discrepancy between internal Live View and Webserver

Post by admin » Mon Oct 18, 2021 5:58 pm

Seems the live view image is decoded from jpg processed and saved back to jpg, this cause quality lost. You can turn off this feature by enabling "No processing" options in live view "Display" panel

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