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Bug #12483

Red frame and/or black image at high enlargements

Added by Claes Lindblad 3 months ago. Updated 3 months ago.

Status:
New
Priority:
Low
Assignee:
-
Category:
Darkroom
Target version:
Start date:
12/19/2018
Due date:
% Done:

0%

Affected Version:
git master branch
System:
other GNU/Linux
bitness:
64-bit
hardware architecture:
amd64/x86

Description

As reported at https://discuss.pixls.us/t/minor-errors-in-2-6-0rc2/10381

a) In Windows (arturoisilvia)
in some photos, when I have ‘noise reduction (raw)’ activated and a large display is displayed at 400% or more, a red frame is produced or the black photo is also displayed completely.

b) In Manjaro (dt 2.6.0rc2) (me)
This phenomenon also exists in Manjaro (dt 2.6.0rc2)
and the border gets even more “interesting” at 1600%.
It seems to follow raw denoise on/off.

Screenshot_2018-12-21_15-31-28_ON.png - raw denoise = ON at 1600% (124 KB) Claes Lindblad, 12/21/2018 04:34 PM

Screenshot_2018-12-21_15-32-16_OFF.png - raw denoise = OFF at 1600% (139 KB) Claes Lindblad, 12/21/2018 04:34 PM

Fujifilm - X-T1 - 14bit uncompressed (3_2).RAF.xmp (2.51 KB) Claes Lindblad, 12/21/2018 04:39 PM

dt244_on.jpg (15.9 KB) Claes Lindblad, 12/22/2018 11:29 AM

History

#1 Updated by Pascal Obry 3 months ago

As you said "in some photos"... please attach the RAW + xmp to reproduce this. Thanks.

#3 Updated by Claes Lindblad 3 months ago

Sorry, forgot the xmp :-(

#4 Updated by Pascal Obry 3 months ago

I see thanks. Do you have the same issue in 2.4?

#5 Updated by arturo silvia 3 months ago

In 2.4.4 there is no preview increase 400% 800% or 1600%

#6 Updated by Claes Lindblad 3 months ago

@Pascal: Yes, same issue in 2.4.4 (tested on Win X), even if we only have 200% in v2.4.4.
Screen dump enclosed, using same img as above.

#7 Updated by Pascal Obry 3 months ago

That's what I thought. This is an issue that has already been discussed IIRC. Thanks for testing.

#8 Updated by Aurélien PIERRE 3 months ago

Sounds like a padding issue.

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