Graphics: JPEG gradient 16-bit color monitors?

started by Alex on Jan 18, 2005 — RSS Feed

Alex Alex
Posts: 2

I have a jpeg created in Photoshop CS which is a gradient from from #D0D0D0 to white. It looks just fine on all my 24-bit and 36-bit color displays but I have a client who is reporting horrible banding effects which I think I have reproduced by changing my display options to 16-bit. I don't know whether there are a high proportion of 16-bit displays out there or not but is there anything I can do in Photoshop CS or with transparent PNG files that will give me a reliable gradient effect?

Stan Stan
Posts: 44

I don't see how changing the image format or the program you use to create it will help. A 16-bit monitor can't display all the colors, so you get banding. You could ask the client to see if his PC has had its settings changed. There aren't very many monitors like that anymore.

Alex Alex
Posts: 2

Thanks for this. When you say there aren't many 16-bit displays out there any more is that just a feeling you have or do have hard information on this? My other thought is that maybe it is possible to produce a smooth gray to white gradient with the 65,000 colors available on a 16-bit display?

Joe Gillespie Joe Gillespie
Posts: 528

Alex said:
Thanks for this. When you say there aren't many 16-bit displays out there any more is that just a feeling you have or do have hard information on this? My other thought is that maybe it is possible to produce a smooth gray to white gradient with the 65,000 colors available on a 16-bit display?


According to the thecounter.com 16-bit displays still account for 23% of surfers. 16-bit colour is not paletted like 8-bits, it is a subset of 32-bit and you can't choose which. Instead of having 8-bits each for R,G and B there are 5 red, 6 green and 5 blue, so the steps between them are much greater. Instead of 256 shades of each colour there are only 32 reds and blues and 64 greens. Gradients will be banded no matter what you do.

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