: Can I print large photo on canvas (72''x20''), but also have high resolution (300dpi) and all that in rather small file size? Is there a way to have all those 3 things together? Large/high

@Deb5748823

You can easily create a large canvas print provided that your photo has a high resolution and that its pixel do not go hayware.

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@Smith574

There's no reason why you shouldn't be able to save the image as a JPEG (unless your machine has considerably less grunt than the Atom-based netbook with 2GB RAM I just used to save a Ps document of that size as a JPEG), provided that it's flat, 8-bit and you've selected "Baseline". (Baseline optimized and progressive take more memory to process the compression, and I handily ran out of RAM.) Save off the PSD before flattening and changing bit depth, of course. And if you've had Photoshop up and running for a while, you may need to restart in order to reclaim some RAM.

That should result in a JPEG file that's under 300MB saved with a quality factor of 12. (Two of the images I saved — all random collages of photos I happened to have on my drive — were under 150MB at 12, the others were just over 200MB to about 250MB.) That's still big, of course, but not 3GB big. Still, you'd have to forego the email option and either FTP or stick it in the cloud for download. (And if it's going to canvas, 12 is probably overkill for file size, but it takes less computation to compress than the smaller options. If 10 gives you a memory error, try 11 or 12.)

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