What's the point of photo sizes like this:?

[Tracer]

I received a photo that was 457,018.6 picas wide at 1px/in. (Or 76,169.7 inches wide).

Yes, I could resize it in Photoshop, but what's the purpose of sizing it that way in the first place?

[onehandle]

1. Saved by weirdo, amateur, old-timer, or accident.

Picas have no purpose in images, unless you are sizing it for a layout that is in picas, weird in itself.

Most people don't use picas these days.

[RoccoR5955]

2. You size something like that

so that you can print a billboard that people will see from 3 feet away, at eye level.

There is NO reason whatsoever to size something that big, unless you want to blow it up into something ginormous.

[jmowreader]

3. It's a weird Photoshop thing

For some reason the field in a JPEG that tells the image "you're six inches wide at 300 dpi" will occasionally clear itself, and the image will decide it's the size of a football field - or a mile wide, in your case - at 1 dpi. The only thing you can really do is to reset the resolution in Photoshop.

[robinlynne]

4. or professional use. Always best to downsize ther files onlyu the moment you need to and keep the

larger file.