A maths question

[Simpo Two]

This will entertain the more tecchy readers.

Yesterday I took a JPG image measuring 2560 x 1920 pixels and 2.5Mb in filesize, opened it in PS and went to crop it to 1500px longest side.

In just a few seconds my computer filled all available space (about 200Gb) with temp files and locked up. I'd set it to 1500" not pixels

What size file was it trying to make?

[Simpo Two]

marshalla said:

Which resolution (dpi/ppi) and which compression/quality factor had you selected ?

The original file appeared as 180ppi; no further compression at that stage as I never got as far as 'save'!

[Simpo Two]

Ah, a bitmap 125 feet long - yep, that would account for my hard drives being filled with the computing equivalent of expanding foam!