Camera Raw & DNG: Lens Profile Creator can't handle 36 MP DNGs or JPGs from Pentax K-1

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  • Updated 3 years ago
  • (Edited)
First the software used and the environment:

Adobe Lens Profile Creator, version 1.0.4. for Windows
on a 64-bit Windows 10 computer with 16 GB RAM, 128 GB system SSD.

The problem: I tried to calibrate a lens for my Pentax K-1 and its 36 MP sensor - and found that the Adobe Lens Profile Creator (ver. 1.0.4.) was not willing to process the full resolution DNGs with the required test chart shots. It gave a warning that - looking for the corners of the test chart - the memory requirements were exceeded and that I should try with a lesser number of images. I reduced the nine provided shots to three, but got the same warning - starting with the first pic analyzed.

I then converted the DNGs to full resolution JPGs using LR CC and tried again - same result.

For a third try I limited the longest edge of newly converted JPGs to 3000 px - and the lens profile creation process with the same pics (now downsized) went through. But I found that the created profiles weren't available for my DNGs - and that's what I wanted them for. 

I found a workaround for that - simply switched the RAW tag in the created .LCP file to "true" - but of course am not satisfied with this solution. I would really like to be able to process the full rez DNGs without any workarounds. Are the 36MP DNGs/JPGs simply too big for processing?


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Posted 3 years ago

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Photo of Chris Castleberry

Chris Castleberry, Camera Raw Engineer

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Official Response
Thanks for the follow up, Phil. 

Given the ALPC is 32-bit, I am not surprised it struggles with the larger images and multiple profiling within a single session. Also, there may be other implementation issues with how it handles memory independent of the ability to address larger amounts of system RAM. I'll bring this up with the team as something to consider addressing in the not-too-distant future.

- Chris