Pentax 645D file sizes (Screen capture from Adobe Bridge)

The file sizes produced by the Pentax 645D are around 15 MB  for JPEG files, 50 MB for DNG files, and a massive 225 MB for a 16bit TIFF image.

As I said in a previous post this means you will fill up memory cards and hard disk space quickly.

Also it means that you need a computer capable of some heavy lifting if you are going to start processing those files in Photoshop. A 225 MB TIFF image is huge, but if you start working with layers, you could easily be dealing with a file over 1GB .

Digital Discovery #11

I had never really used Adobe Bridge until I started shooting with the 645D.

With film the process of selecting images is done on the light table. Only the best images are scanned, catalogued, filed, and stored. Once scanned I would open the images in Photoshop.

With digital it’s quite easy to get overwhelmed by the sheer number of images, but Adobe Bridge seems to be a good way of organizing things. I can use it as a light box to quickly delete the junk, then sort by quality using the rating system. Once this is done I can then open up the raw files of the best images in Photoshop.