Astro Essentials Samyang Lens to M48 Adapter
 Astro Essentials Samyang Lens to M48 AdapterAstro Essentials Samyang Lens to M48 Adapter 

Astro Essentials Samyang Lens to M48 Adapter

  (8 Reviews)
✓ 2 year warranty


Out of stock due 15-20 working days

About this product

Model:  ae_adptr_1012

Directly connect a CMOS or CCD camera to a manual Canon fit Samyang Lens with enough room for a filterwheel!

This useful adapter was suggested by Rob / Uranium235 from Stargazers Lounge to enable him to directly connect his manual Canon fit Samyang 135mm lens to his astronomy camera.

Swapping the Samyang bayonet adapter is nice and easy.  Simply by removing the three screws. 

  • Back focus with the Astro Essentials M48 adapter in place: 44mm.
  • Adapter Thickness: 3.2mm.
  • M48 Thread Height: 4.3mm.

There is enough back focus room to fit a filterwheel and / or filter drawer into the optical chain (subject to camera / filterwheel).

Important: Suitable for use only with manual focus lenses. with Canon EOS fitting 

Customer reviews

Average Rating (8 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Samyang M48 adapter
18 February 2024  | 

Excellent service from FLO as usual and adapter easy to fit and should give a bit more versatility to fit a rotator within backspace limits which I found difficult to do with my current Canon to M42 fittings.

Rating (max 5):  
Seems like a good shout
05 February 2024  | 

As we know any slight micron issue with the 135 and you are going to get tilt. Its seems well put together exactly the same size as the original Canon adapter. As for how it performs I don't know yet due to cloud but I am betting it will be an improvement over using the Samyang one, so cant complain for 30! Top marks for FLO as usual less than 24 for delivery of three items and also looped in another item with free delivery as I missed it off my list

Rating (max 5):  
16 April 2023  | 

very nice item

Rating (max 5):  
It fixed my tilt
13 June 2022  | 

This is a very nicely finished piece of metalwork. I am using the Samyang with an ASI 1600 and EFW. The official ZWO EOS adapter was ok but there was significant distortion on one side of all my test images, not helped by the weight of the camera I suspect . Being F2 I imagined this was caused by a very small tilt that would be difficult to resolve. In searching for a practical solution I found this adapter mentioned on the SGL forums.

Its very quick to fit and aligns very well with the lens body. Everything is now nice and rigid. I have the lens in ring clamps and it supports my camera just like a normal OTA does. The tilt has gone, the central stars are all perfectly round. I now have to tweak the final spacing between lens and sensor to improve the stars at the edge. The recommended starting point for spacing is 45mm if you have typical filters or a more accurate rule of thumb spacing is 44 + (filter thickness )*0.3. For ZWO filters that works out to be 44.6mm. With that spacing my edge star shapes are still not perfect and 44.5mm looks to be better.

To get the that spacing I'm using a Baader 0.8mm aluminium M48 spacer, 16.5mm ZWO M48 to M42 adapter, Baader 0.6mm Delrin spacer all purchased from FLO. Combined with 20mm for the EFW, 0.1 for the ZWO dew heater and 6.5 mm for the camera sensor I get to 44.5 mm. ( I like having spacers at each joint, it reduces the chance of parts cold welding together.)

Removing the EOS plate and fitting this adapter takes very little time. If I ever decide to use the lens with my DSLR or to sell it on , refitting the EOS plate takes moments.

Rating (max 5):  
Well made adapter.
10 March 2021  | 

Just got it today March 10 2021, I will try it as soon as the weather permits. The adapter seems to be of good quality.

Rating (max 5):  
Works on Minolta/Sony A Mount version.
08 March 2021  | 

The adapter also works on the Minolta/Sony A Mount version, probably also on all other versions? I was able to realise an OAG setup on the Samyang.

Rating (max 5):  
Just the job...almost!
27 June 2020  | 

A well-made adapter, easy to fit and excellent low profile. You can also use it to connect directly to an EFW2 ATIK filter wheel via the ZWO adapter This adds no back focus and is ideal for the job. If only FLO offered a T2-threaded version...

Rating (max 5):  
Perfect fit
22 January 2020  | 

This is perfect for removing tilt when connecting a Samyang 135mm canon fit lens to my qhy183c


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