I am very pleased at how well it went together and how robust it feels. The parts are printed with a high density and tolerances are good. Combined with a ZWO EAF it is really easy to get auto-focusing working and it works reliably and consistently without flexing the brackets. I've added a Raspberry Pi4 running Astroberry to make a compact ready assembled budget widefield imaging package. For those interested I found the maximum number of steps with the EAF to be around 21050. I havent tuned the backfocus yet but infinity seems to be around 800 steps from 0 (reverse stepping).

I read about the camera rotation procedure and was a bit concerned but actually it is simple and quick to do - you just need to practice it once or twice in the daylight. You need to remember that in the new rotation the EAF 0 point has changed.

I have a small quality of life suggestion that perhaps the designer can consider: I image with an ASI1600MM pro and filter wheel, I also use an ZWO 30mm guidescope with AS120mm mini. If the Accessory Rail extended 2 cm out towards the lens hood and a 4th hole was made for a locking screw then it would be much easier to position the guidescope+USB cable not to clash with the filter wheel as I rotate the lens for framing. As I have it now the guidescope shoe is as far forward as possible and is just retained by two screws. I've adjusted the focus so I can push the ASI120 further in to the guidescope tube. That gives me a few mm of clearance now with the USB cable plugged in.

All in all I'm very pleased with the result. It is much better than my own 3d printed solution that didn't survive more than two sessions. but then perhaps I'l print my own guidescope holder .

Not had a chance to use this yet in the field, but I have put the rig together which was pretty easy, very well made too! I have deducted one star for two reason. Firstly I would have liked the AAP mount to be included in the kit and not have to have bought it separately, but I see why as others may not require it and also the screws to close the rings go from underneath up and always fall out when opening, a simple washer, holder or thread on the lower ring would have helped here, but overall really good product.

Brilliant product, and exactly what I was looking for. I can tell that a lot of thought went into making this. It fits my rokinon 135 lens perfectly and basically turns it into a telescope. I had no issues installing the EAF and attaching my guidescope.

Great ring system for Samyang 135 very
pleased with it I had one from another manufacturer at twice the price that was useless. this one is very well made and sturdy can highly recommend it.

Well built piece of kit for the Samyang 135mm lens. Also enables the fitting of a ZWO EAF. Exactly what I wanted and delivered quickly from the team at FLO.
Also exceptional advice from the folk at FLO, as always. Many thanks.

Really impressed with the product and they even have 3d printed dividers in the packaging itself. The 3d printed parts really hold the lens well and looking forward to first light with this as soon as the clouds depart!

Note: I bought this directly from Astrodymium before FLO started selling them.

This is now my third(!) set of 3D printed rings, and the Astrodymium is the best one by a long shot! The material used here feels solid, and all parts fit well together. There is no slop or movement when attached to the lens. And now you no longer have to MacGyver something to use your ZWO EAF! Just two screws, and you are done!

I removed a star due to the dovetail screws being made out of cheap soft metal. One of mine got stuck after the threads stripped off in the hex nut. In the end, I had to cut it out. Replace them with something better!