I recently purchased an F-1 chrony and was experimenting with it a bit this eveing. First I tried using it under a big florcent light and had mixed results. When a velocity was actually displayed they were consistent but I had a lot of errors with no readings. I know florecent is not recommended so I switched to an incandescent light (one of the bright and hot shop types). Using this light I got consistent readings depending on how close I hung it to the chronograph. The closer I placed the light, the higher the velocity reading were (with no changes to the bow). So my question is has anyone had this problem and what is the ideal lighting for an F-1 chrony provided you don' t want to shell out the bucks for the custom lighting rig?