Jump to content

Coloring Btmap tiffs in Affinity Designer

Recommended Posts

On 8/6/2018 at 4:35 PM, Fixx said:

Well, either there is error in math or bigger 1-bit file just happen to compress better than downsampled one.

Here are some figures for file sizes when saving the same image in different bit depths, compressed and non-compressed:


Note however that the bitmap image has 1200dpi, which it normally also needs to have, while the grayscale and RGB versions have 300dpi. The content for all files was same, random line strokes in black.

These are lossless compressions for all file types (LZW for 8 and 24 bit and ZIP for 1-bit). You can use grayscale images for colorizing, too, but 1 bit images have some uses that other image types do not have. But there is necessarily no point in using them just for saving disk space.



Share this post

Link to post
Share on other sites

Yep! I shouldn't have gotten too excited! Affinity (Designer, Photo or Publisher) won't output to PMS only CMYK Come on Affinity! this is needed! now back to your original programme.


Addendum: you could still do it in a manual kind of way - as the color doesn't need to be specified in the file as long as the right bitmap image gets assigned the correct ink color and correctly registered it would work, but then that's taking the process back quite a few years! 

Thanks for listening...

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

Please note the Annual Company Closure section in the Terms of Use. These are the Terms of Use you will be asked to agree to if you join the forum. | Privacy Policy | Guidelines | We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.