danbretl
commented
12 years ago From @photoflow :
I was playing around with Capsule, one of our strongest competitors, and they go with around a 1200 pixel and change long edge for photos and seem to compress the hell out of the photos. I believe the file size was around 200-300k. The app is blazing fast to the point where you can rapidly shoot multiple photos one after another, albiet with no editing or confirmation before submission. Just a reinforcement that the file size limiting is the right way to go with this.
This will require a bit of experimentation and guesswork, but images definitely need to be reduced in file size to allow for faster uploads (especially on slower 3G cell networks).
Our target is to allow for high quality 4x6 prints. If we consider 150-200dpi to be an acceptable print resolution, that would bring our target image size to somewhere between 600x900 and 800x1200 pixels. As such, we should try to limit images to 1200x1200 pixels. We should also bring the JPG compression quality down to 80% or lower, depending on how effective this is at reducing file size. (This is where the experimentation comes in.)