CLOUDRAY LENS TUBE DEFECT !!!!
Posted: Sun Sep 20, 2020
Warning. Cloudray has a defect in their new lens tubes. I have verified the defect in both of my C Series tubes.
They made the tube too long by 10mm. The 2" and 2.5" positions work just fine as they work from the end the lens is mounted in. The 4" /101.6mm position uses the 2" shelf from the opposite end. With the extra 10mm in tube length, the focal point of the 4" position is 5mm or better INSIDE the nozzle of the N03 tip. You want the N03 tip for the 2" and 2.5", but need the N01F for the 4" until they fix the problem and put out the 80mm tubes instead of the 90mm tubes.
They made the tube too long by 10mm. The 2" and 2.5" positions work just fine as they work from the end the lens is mounted in. The 4" /101.6mm position uses the 2" shelf from the opposite end. With the extra 10mm in tube length, the focal point of the 4" position is 5mm or better INSIDE the nozzle of the N03 tip. You want the N03 tip for the 2" and 2.5", but need the N01F for the 4" until they fix the problem and put out the 80mm tubes instead of the 90mm tubes.