[GH85Carrera]

Good morning all.

Sid, Photoshop is not real intuitive. There are usually two different ways to accomplish many tasks. I started using Photo editing programs in the late 1980s. The program was Photo-Styler and that was bought by Adobe to become Photoshop. Heck our version was installed from floppy several discs! We had a 6 MHz IBM AT with a whopping 32 meg hard drive. The scanner we bought was stupid expensive and slow as molasses but I scanned a 8x10 at 300 PPI and it had to be rotated 90 degrees. It took that over the weekend to rotate. We only had 2 MB of RAM at the time. We paid $800 for 4 more megabytes of RAM and the expansion card and then I could rotate a file just 20 minutes. I think of those days sometimes as I work on one of our current giant 1.1 gig files now. The other day the client wanted a single image that covered several square miles at very high resolution. The final file was over 6 gig. Try working on that file with several layers. My new computer did not care, I love having 32 gig of RAM.

In mapping a common file format we use is a compressed file format called MrSid. We have made mosaics of over 500 images. The final file is highly compressed and it is still over 10 gig. The program has a software "cartridge" we have to buy and it will take a 1 gig tif file and make it 20 MB file with very little loss of detail.