Once again shooting birds from inside my bedroom with a 300 2.8. While I quickly slapped the lens on I went straight to shooting, ignoring one of the earliest rules my high school photography instructor taught me. While I did have my gear within 5 feet of me I didn't have it set up for immediate shooting. I had covered a low light assignment earlier and hadn't reset my ISO to a reasonable sensitivity. Hence, outdoor bird photos at 1600 ISO. lol.