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Phillip25773954zo3e
Participant
September 15, 2022
Question

Topaz: Exposure Bias in Metadata panel not being rounded properly

  • September 15, 2022
  • 1 reply
  • 723 views

in Lightroom Classic 11.5, on MacOS 12.6 and 12.5.1, in Library mode, in the Metadata panel, the "Exposure Bias" sometimes shows values like "-11184811/33556432 EV" (in a very tiny hard-to-read font) where "-1/3 EV" is expected.  For the same photo file, other software shows the "-1/3 EV" value.

 

To reproduce, I process a Canon EOS R6 CR3 file with Topaz Labs Sharpen AI, which outputs a DNG file, then import into Lightroom Classic.  Lightroom shows the CR3 file's exposure bias as "-1/3 EV" and the Topaz DNG's as "-11184811/33556432 EV".  For the same DNG photo, other software shows the expected "-1/3 EV" exposure compensation value.

 

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1 reply

Rikk Flohr_Photography
Community Manager
Rikk Flohr_PhotographyCommunity Manager
September 15, 2022

I am not able to reproduce this using a Canon R5, LrC 11.5 and Monterey 12.6. 
Are you able to supply the Topaz DNG for evaluation?

Rikk Flohr: Adobe Photography Org
P
Phillip25773954zo3eAuthor
Participant
September 15, 2022

Rikk,

 

I just tested this out again, using CR3 files straight from the camera and Topaz Sharpen AI v4.1.0.  The same problem occurs.  The Topaz DNGs are 121 MB, which can't be uploaded here, and I got an error trying to upload CR3s.  I'm not sure if this will work but here are some dropbox links:

 

-1/3 EV DNG: https://www.dropbox.com/s/yhxq470p3eeiqfr/R6PT2922-SharpenAI-Focus.dng?dl=1

-1/3 EV CR3: https://www.dropbox.com/s/b56nntcr82rv8lf/R6PT2922.CR3?dl=1

-2/3 EV DNG: https://www.dropbox.com/s/wcs5nwsu1wh2xmc/R6PT1871-SharpenAI-Focus.dng?dl=1

-2/3 EV CR3: https://www.dropbox.com/s/fzbnachjlj2gwmr/R6PT1871.CR3?dl=1

 

 

Rikk Flohr_Photography
Community Manager
Rikk Flohr_PhotographyCommunity Manager
September 16, 2022

Lightroom Classic is displaying the EXIF information embedded in the DNG file. Below is an EXIF extract from Photoshop 'File Info' for 'Raw Data'. If the DNG was produced by Topaz, then best you contact them for an explantion and hopefully a fix.

 

</exif:ISOSpeedRatings> <exif:ShutterSpeedValue>9965784/1000000</exif:ShutterSpeedValue> <exif:ApertureValue>6339850/1000000</exif:ApertureValue> <exif:ExposureBiasValue>-11184811/33554432</exif:ExposureBiasValue> <exif:MeteringMode>5</exif:MeteringMode>

 

 


I am going to have to agree with Ian here. You should probably report this as a bug to Topaz. 

Rikk Flohr: Adobe Photography Org
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