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Exporting PSD image sequence w/ alpha channel
Hi,
So I’m working on footage that has a green screen, which after I had keyed the green out, I got an alpha channel. I went and changed the background color of the composition to red so that I can see if there is any green spill on my foreground. After correcting that, I wanted to render my footage as an image sequence.
This is where my problem arises. When I render out to a PSD image sequence, the files keep that red background from my composition settings. I know that this background is still acting as an alpha channel and will ultimately disappear once I place a background, but it’s bothersome when opening the files in Photoshop and not seeing the usual checkered background an alpha channel usually creates. Not to mention if I were to save my Photoshop file to another file type, say a PNG, the red background flattens and loses its alpha channel.
The only render that worked is the PNG image sequence, which has that checkered background when opened in Photoshop. However, I’m trying to keep as much quality as possible, and I feel that PNGs are somehow inferior in quality compared to PSDs. Am I wrong in thinking so?
Thanks!
Caroline -
1 Reply
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There are different colour types for PNG files. You might be thinking of the indexed colour type PNGs which are more like GIF files.
But PNGs can also use up to 16 bit colour, which I find is good enough for most purposes.
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