Lightroom: Relative Film Grain Size

  • 4
  • Idea
  • Updated 3 months ago
  • (Edited)
Currently, grain size is absolute. Grain size relative to image dimensions would be a great idea. Theoretically, the grain size would also adjust relative to cropped dimensions much like the post-crop vignetting works.
Photo of jbedford

jbedford

  • 138 Posts
  • 31 Reply Likes

Posted 3 years ago

  • 4
Photo of eartho

eartho, Champion

  • 981 Posts
  • 282 Reply Likes
grain size is subjective and why would it change based on a crop?
Photo of jbedford

jbedford

  • 138 Posts
  • 31 Reply Likes
Actually, it seems grain size is absolute. Sometimes we want to apply an equal amount of grain to photos, but a setting size of '25', for example, will look smaller on a 22MP file than it will on a 10MP file.
(Edited)
Photo of eartho

eartho, Champion

  • 981 Posts
  • 282 Reply Likes
When i say it's subjective, im referring to the initial decision about appearance...

And yes, grain size is absolute, so a setting of 25 will look the same, regardless of pixel dimensions. If i'm not mistaken, the size slider is a direct translation of pixel size, so if you have an image which is 1000x500px, a setting of 25(px) will have the exact same grain size as an image which is 5000x2500px... they'll both be 25px.
Photo of Thobias Ⓒ

Thobias Ⓒ

  • 27 Posts
  • 1 Reply Like
I would really like to have grain size same for all size when export. I don't understand why grain is not 1:1 when resize pictures on export? If I have nice grain on 1:1 preview in full res and then I export photo in 1024px size, grain is gone. It doesn't make sense!
(Edited)
Photo of evikne

evikne

  • 19 Posts
  • 3 Reply Likes
I was going to ask for the same thing. I have recently purchased a VSCO film preset pack. But the grain size varies a lot depending on how much a picture is cropped. In my opinion this is completely wrong.

If this feature is implemented in the future, we must have the choice to add grain in either relative size or not, to prevent previously edited images from being affected.
Photo of Thobias Ⓒ

Thobias Ⓒ

  • 27 Posts
  • 1 Reply Like
Absolutely agree.

Photo of evikne

evikne

  • 19 Posts
  • 3 Reply Likes
As a kind of workaraound I have now made a smart album to collect all images that are significantly cropped (my camera has 24 MP, so I chose images with less than 15 MP). Then I browsed through these images and manually reduced the grain size on some of them, especially on B&W images, where I think the grain is most visible.
(Edited)