After days of researching reviews, comments and various websites that do IR conversions, I decided to go with KolariVision. Sent off my Nikon D200 for an 850Nm conversion. Turn around time was 10 days door to door. My camera came back perfect! Looked as if it was never touched. Started shooting with it right out of the box…. after a quick custom white balance. Images are SHARP! and the sensor is CLEAN!. Even with several other lenses the auto focus is dead on! If you are thinking of getting into digital IR photography I would HIGHLY RECOMEND Kolari Vision for quality, customer service, price and turn around time. I will be using them for future conversions.