[bufferoverflow]

I don't know about you guys, but most of the stuff that takes up space on my drives are:

1) Videos from my DSLR

2) RAW images from my DSLR

3) Various movies / TV series I downloaded

4) Game files (most of which are textures and 3D models)

None of that stuff is really compressible.

[jandrese]

The RAWs aren't compressible? Are they LZ encoded on the camera?

[kortex]

RAW imagery I have worked with is about 25-50% losslessly compressible on average. Most of your gains in image compression are from quantizing the gamut in clever, (usually) imperceptible ways.

Raw imagery contains a lot of entropy that usually doesn't affect the appearance perceptually, but still has sig figs that frustrate compression.

[spaetzleesser]

My Fuji has lossless RAW compression and as far as I know quite a few others too.

[bufferoverflow]

I just tried compressing one with 7-zip ultra level compression. Saved maybe 5%. Wouldn't get even that with realtime compression.