Collapsible Telescopic Flash Diffuser

by JayBee1966, published

Collapsible Telescopic Flash Diffuser by JayBee1966 Apr 12, 2017


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1133Views 202Downloads Found in Camera


I wanted to maximise the soft light from my flash gun but had to be able to easily move the light source around with me, so a brolly or softbox was not viable. I therefore decided on a large diffuser, that also utilises bounced light from any walls or ceilings. This telescopic diffuser compacts down to fit in a camera bag with it's own protective case to avoid being crushed when on the move.

The diffuser fits my Yongnuo 565EX flash, but I believe that it will fit some other models too. Having said that, the design can easily be modified to fit other flash models by slicing the adaptor part below the rim and lofting a template of your flash face to it.

My first attempt at this used a "tight fit" to hold the pieces in place when extended, so it simply and quickly slid into the extended position. However getting the right tightness which lasted permanently was elsusive and after a short while it kept collapsing unintentionaly. This version has a locking mechanism for each layer, but this means it takes a little longer to unpack and get ready to go than I would like, so any suggestions for improvement would be welcome.

Print Settings


Anet A8




Doesn't Matter






I didn't use supports to print this, but printed all parts with the exception of the base cap upside down. The protruding locking lugs did not print as cleanly as I would have like so I had to tidy them up afterwards, but this could be due to the higher speed setting I had selected in Cura.


Assemble by inserting each smaller part in the other like a Russian doll. Then twisting to lock in place. The base cap protects and keeps the diffuser together whilst in transit.

How I Designed This

I scanned the flash gun face and used it as a template to trace a sketch for 123D Design. The sketch was then lofted to a circle and then the rest was built from there using increasing circles.

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Fits very well on my Godox TT685S.
I've tested this Diffusor against the Orginal Gary Fong Lightsphere. What should I say... There ist no difference between this 2.
Very nice Work.
I will sent the Gary Fong Lightsphere back to Amazon an save 65€... Thank you

You are a life saver! I have to take pictures at a baptism in two days (know it since yesterday) and a hard flash is of course a no-go with a baby. This saves me tons of work trying to design a softbox myself. Thanks a million, printing starts in a second.

How did you get on with the photos of the baptism? Did you use the diffuser?

I would like to make a copy with a few more rings to extend, would it be possible to get the fusion files to make the adjustments or request them from you?

I also want to make difuser caps to go on the end,

The thing was created in 123D Design, so I have uploaded the 123Dx file along with a DWG export. Hope this helps.