Photoshop: How can I save a single channel's contents with Save For Web?

  • 1
  • Question
  • Updated 1 year ago
  • Answered
  • (Edited)
ok i opened a picture raw format .top right is set to photography . in the tab below is adjustments / add an adjustment .I clicked invert . now pick channel Red only .all other eyes off . this is the look i want . now i saved for web . but the picture is RGB and i only want the red channel. what is it im doing wrong ?
Photo of phillip jensen

phillip jensen

  • 9 Posts
  • 0 Reply Likes
  • confused

Posted 4 years ago

  • 1
Photo of phillip jensen

phillip jensen

  • 9 Posts
  • 0 Reply Likes
so i deleted all channels but red. i have the look i want . but save for web is grayed out .. when i use the save as raw and re-open it look's fuzzy ... not what i saved . the only way i have been able to save, any were close to the look. is to select all, copy and past into windows paint. then save as jpeg
Photo of Chris Cox

Chris Cox

  • 20280 Posts
  • 818 Reply Likes
You only changed the visibility of the channels, you didn't change the actual content of the document. You have to fill the channels with black, use an adjustment to zero the other channels (like channel mixer or levels), or separate the RGB channels into 3 grayscale documents.

Deleting channels would leave you with a multichannel document, which SFW can't work with.
Photo of phillip jensen

phillip jensen

  • 9 Posts
  • 0 Reply Likes
i found another way . i made a copy of the red channel. select only the red copy . then select all, copy, and then selected file, NEW, and pasted into there now when i save for web it is only the red channel i wanted ... how ever im going to try it the way you have out lined. thank you for you help . link to picture to big to fit in upload https://www.facebook.com/photo.php?fb...
Photo of harvey ang

harvey ang

  • 1 Post
  • 1 Reply Like
1. Make MODE > RGB.
2. Flatten the image and go to channels.
3. Click the icon right above and click split channels
(it will now create 3 grayscale RGB windows).
4. You may go with the 1st window, the RED. Convert it to MODE > RGB.
5. Go to LAYERS. Create a new fill layer with RED color on top and click the blending mode to SCREEN.
6. Do the same with the rest.

Note: Same procedure with CMYK.

Hope this helps.