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Light Room DNG autocrop Bug

New Here ,
Oct 29, 2017

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Hi,

I have noticed a bug with DNG files shot by the Lightroom app. They should be 4160 x 3120 pixels but are being cropped to 4144 x 3104 pixels.

It would be great if this can be fixed as I am losing 16 x 16 pixels on my DNG photos. The Lightroom camera correctly takes 4160 x 3120 only in Jpeg mode.

Also PNG export would be appreciated.

Please help, thanks!

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Light Room DNG autocrop Bug

New Here ,
Oct 29, 2017

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Hi,

I have noticed a bug with DNG files shot by the Lightroom app. They should be 4160 x 3120 pixels but are being cropped to 4144 x 3104 pixels.

It would be great if this can be fixed as I am losing 16 x 16 pixels on my DNG photos. The Lightroom camera correctly takes 4160 x 3120 only in Jpeg mode.

Also PNG export would be appreciated.

Please help, thanks!

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Oct 29, 2017 0
Adobe Employee ,
Oct 30, 2017

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What generation of Apple device do you have runnign? - Guido

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Oct 30, 2017 0
New Here ,
Oct 30, 2017

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I am using an Android device.

Natively shoots 4160 x 3120 pixels.

But DNG files get cropped to 4144 x 3104 pixels.

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Oct 30, 2017 0
Contributor ,
Oct 30, 2017

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What happens with the stock camera app?

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Oct 30, 2017 0
New Here ,
Oct 30, 2017

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STOCK CAMERA

jpeg: 4160 x 3120 pixels.

LIGHTROOM CAMERA

jpeg: 4160 x 3120 pixels.

dng: 4144 x 3104 pixels.

OPEN CAMERA

jpeg: 4160 x 3120 pixels.

dng: 4144 x 3104 pixels.

It seems that dng (tested on Android) only supports resolutions divisible by 32. 4160 is not divisible by 32, but 4144 is. Therefore dng is rounding down.

The 16 x 16 pixels lost in the dng format DO have image data and if you need an upload of samples.

I tried 'Open Camera' as well. It can save as Adobe dng. Open Camera also has the same issue. Open Camera lets you save two copies (dng + jpeg) when shooting. The same image is saved 4144 x 3104 dng and 4160 x 3120 jpeg. The images overlayed in Photoshop (desktop) are the same (minus camera processing) but the dng is missing 16 x 16 pixels.

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Oct 30, 2017 0
Contributor ,
Oct 31, 2017

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My OnePlus 3 captures RAW and JPEG at 4640x3480 regardless of the camera app, including Lightroom. Note that the second dimension doesn't divide by 32.

It's really useful if you specify your device and OS.

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Oct 31, 2017 0
New Here ,
Oct 31, 2017

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Manufacturer: Huawei

Device: Honor Note 8

Android version: 7 (Nougat) EMUI 5.0.1

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Oct 31, 2017 0
New Here ,
Oct 31, 2017

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UPDATE:

The dng files DO contain the missing 16 x 16 pixels. The opensource software UFRAW correctly opens them at full resolution.

For some reason dng import on PC Photoshop CS, Android Lightroom and Android Snapseed truncates (crops) 16 x 16 pixels.

Website of UFRAW:

http://ufraw.sourceforge.net

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Oct 31, 2017 0
Adobe Employee ,
Nov 08, 2017

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Can you please provide some sample files with the issue?

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Nov 08, 2017 0
New Here ,
Nov 14, 2017

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Sample file inside zip

http://elekey.com/dng.zip

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Nov 14, 2017 0
Adobe Employee ,
Feb 09, 2018

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We investigated the issue and found that the extra pixels shown on UFRAW might be padding pixels. As a result of this not only Adobe apps, other standard apps like Snapseed is as well discarding these pixels.

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Feb 09, 2018 0