Good grief.... There is so much going on in photography in the Linux world
There is definitely a lot to look through to post here. I will post what I find to be useful / helpful as I look through them all....
I may very well yet again pick up the camera... There is just "so" much more that can be achieved these days in photography. Why, when I got into it years ago... the only ways to get special effects were to shake the camera around vigorously while taking pics for a blur (or other various effects)
Usually, the best effects came about via some bizaar mishap with a flash of light of defective film
