In my film/darkroom days, the ultimate back up was a negative. My filing system of keeping track of negatives, subject data, etc left a lot to be desired. When I switched to digital 5 or so years ago, I decided to develop two Excel spread sheets. One keeps track of the RAW files, subject date, camera used etc. The second spread sheet tracks Photoshop finished images, either digital camera produced, or scanned negative produced. I am a retired Engineer, but have had a nice Fine Art Print business. A new client came to our home/studio to look at 7 or 8 portfolios of finished 13"x19" prints, and selected three images, and wants them 16"x24". One of the chosen images I can not find the file. Apparently I forgot to write the file number on the print (I do this often), but disaster of disasters, I failed to enter it into my Excel sheets. Chances are it is filed on a CD/DVD/Blu_ray disc, but iI have a ton of these...no way to find it. I have a very similar image, take on another day, with slightly different lighting conditions, and I was going to approach the buyer to see if he wouild like a substitute. However before doing this I set up the 13"x19" portfolio print, and copied it using a firm tripod, Alpha 900, 50mm Sigma Macro lens, and mirror locked up. I bracketed three exposures and combined them in Photomatix Pro. The original print was tack sharp (Canon 1DS II or 1DSIII, L glass processed on DXO). I used PK Capture sharpener, resized in "Blowup 2", and output sharpened in PK. The resulting 16"x24" is stunning. In fact I tweaked levels and saturation in the copy, and I like it better than the original.
I don't reccommend losing files, but sometimes there is a "FIX"
Best regards to all
Dave G
www.modernpictorials.com