I don't think there's a clear cutoff from a taste perspective, it'll just be staler the longer you wait. As with most things, it's just about juggling the convenience vs quality tradeoff. But the win-win solution, especially in the later days, might be that condensed milk everyone's talking about.
Saccharo
Adding or subtracting a paper filter can be interesting.
Airtightness is worth thinking about to keep the brew tasting fresh, especially for concentrate storage.
Upgrade your ice using filtered water, maybe big cubes vs ice tray.
And of course, try a hot brewed ice coffee with the same beans to compare.
Super difficult to photograph without a feeder. Nice backlit wings!
Agreed. And the sensor is great so you'll probably be pleasantly surprised. Just set the max iso to 3200 or 6400 and let the camera do it's thing.
On the other hand, I'd say worry more about metering mode (I'd stay away from highlight priority because of bright artificial lights), and focusing (autofocus will be trash in low light, so you'll probably have to zone/snap focus a lot).
How do you digitize your prints? Flatbed?