Digital "Zoom"

[neild100]

Advertisement (gone after registration)

The Leica Q/Q2/Q2M have a handy digital crop feature which shows “framelines” for 35, 50, and 75mm equivalents. Lightroom and Capture One will automatically respect the selected crop and display the image cropped by default. Is there any other software that does the same? 

[mike3996]

Free & open source darktable can achieve the same, using a 3rd party script (I have authored one such script).

The principle is very simple. Q records a "Digital Zoom Ratio" value in the EXIF data.  If your software, be it Photoshop, Gimp, Krita, dcraw, imagemagick, etc, can apply a crop in an automated way, you can first read the metadata and then programmatically apply the appropriate crop.

Edited August 3, 2021 by mike3996

[AnikiMu]

1 hour ago, mike3996 said:

Free & open source darktable can achieve the same, using a 3rd party script (I have authored one such script).

The principle is very simple. Q records a "Digital Zoom Ratio" value in the EXIF data.  If your software, be it Photoshop, Gimp, Krita, dcraw, imagemagick, etc, can apply a crop in an automated way, you can first read the metadata and then programmatically apply the appropriate crop.

Hi, can you give me a link about this script in Darktable please?

[prk60091]

http://www.darktable.org

 

[AnikiMu]

1 hour ago, prk60091 said:

http://www.darktable.org

 

Yes, I know... About the script?

From https://www.darktable.org/usermanual/3.6/en/lua/

Edited August 3, 2021 by AnikiMu

[mike3996]

2 hours ago, AnikiMu said:

Hi, can you give me a link about this script in Darktable please?

https://github.com/progo/leica-q-autocrop/blob/master/autocrop.lua

Here is the one that I used.

It only supports Q Typ 116 crops... which reminds me, it won't actually work with the newest darktable 3.6 properly without a little tinkering. I haven't used this script since 2018 when I sold Q.

It will also need exiftool available in the system. I have only used it in a linux environment, but I don't think there's anything preventing this from running in macOS or Windows.

I'll get back to you tomorrow with an updated version which I should have somewhere, if you're still interested.

[gumbee]

Advertisement (gone after registration)

I use the latest Capture One, but it doesn't automatically respect the crop.  (Am I missing a setting or something?)  

I do have a script that will apply the selected crop (from the exif) if I want to.

thx.

 

[ianforber]

3 hours ago, gumbee said:

I use the latest Capture One, but it doesn't automatically respect the crop.  (Am I missing a setting or something?)  

I do have a script that will apply the selected crop (from the exif) if I want to.

thx.

 

Same here. I can’t get Capture One to respect the crop so if anyone knows if I’ve just forgotten to tick some box hidden away in the menus, please shout!

[mike3996]

18 hours ago, AnikiMu said:

Hi, can you give me a link about this script in Darktable please?

 

15 hours ago, mike3996 said:

https://github.com/progo/leica-q-autocrop/blob/master/autocrop.lua
it won't actually work with the newest darktable 3.6 properly without a little tinkering --

This script is now refreshed and tested to be working in latest darktable 3.6x releases.
You have to make those styles yourself, or maybe try these exported styles but I don't know if it will work.

Users of Q2 might want to work on a "75mm crop" style as well. I made this script and styles for Q Typ 116 but I think it'll work with Q2 files as well.

Leica Q_ 50 mm.dtstyle Leica Q_ 35 mm.dtstyle

[AnikiMu]

7 hours ago, mike3996 said:

Thank you!

 

This script is now refreshed and tested to be working in latest darktable 3.6x releases.
You have to make those styles yourself, or maybe try these exported styles but I don't know if it will work.

Users of Q2 might want to work on a "75mm crop" style as well. I made this script and styles for Q Typ 116 but I think it'll work with Q2 files as well.

Leica Q_ 50 mm.dtstyle 628 B · 1 download Leica Q_ 35 mm.dtstyle 628 B · 0 downloads