I'm using a Sony-a850 with an Opteka Infrared Filter. I am using 1 sec exposure and 2.8f-stop and acheiving a red image. I then process this in photoshop to create a black and white IR image. My results aren't great and I'm looking for basic, tips, and advice. I've seen people post colored infrareds that really pop. Also, my IR's aren't very sharp.