Alignment tube for Focusing Umbrella - Selens 16 rod 90~190cm by geotrick

Last crawled date: 3 years ago

This tube allows you to keep a light centered in a photographic umbrella. This goes into the end of a piece of speedrail tubing, I.D. 25.50mm, and allows a center shaft,O.D. 17.20mm, to stay centered in the umbrella.
There is also a tab cut out to lock the center shaft in place when positioning the light.
I have since just drilled a hole in the adapter. I was concerned that the locking screw would mare the center shaft. The center shaft fits pretty tight so it shouldn't damage the rod.
The portrait was made with the light and a second light in a daylight environment.
I originally used a piece of pvc tubing but it was the center shaft was very loose. I only recently learned how to use Sketchup to produce this.
The light is revered so the light is never direct, but it can be focused from spot to flood.
Since I used a standard speedring (144mm mounting ring) you use different light sources that fit that ring. I have used it with Profoto, Norman, Dynalite, Speedotron, a Metz 45CL and a Speedlite with a Godox mount.
It has worked very good so far.
It took about 3-hrs printing with a Ultimaker 2+ (PLA).
The Umbrella was purchased from Amazon. Selens 16 rod 120cm umbrella:https://www.amazon.com/Selens-36-Reflector-Mount-Speedlight/dp/B013UXHGW8?th=1