Gear Review - Astromechanics EOS Adapter - Control Canon Lenses without a DSLR! 

Just be aware that despite claims on the Astromechanics website, this device does not work well with Tamron lenses!. It has limited functionality with three Tamron lenses only (the 150-600mm just does not work at all). It seems to have better success with Sigma canon mount lenses, but it's primarily suited to Canon branded lenses. I bought one but had to send it back because it wouldn't work with the Tamron lenses I have.

Beautiful piece of kit! I’m going to reach out to the tomorrow to get this for my 70-200mm f/2.8 ver II. Thanks Cuiv!

Excelente vídeo. Acabo de encargar uno a Astromechanics. Muchas gracias por entregar tus conocimientos. Saludos.

Awesome review. I've just forwarded this to a colleague who's got one pending delivery.

Great video and clear explanation!

Fun stuff! Thank you!

Seriously man, you are churning out content like crazy. Don't know how you are doing it, but it's pretty awesome. I hope I can start rolling content soon.

Another great video Cuiv, thank! I am about to buy one of these and it's crucial that it will work with NINA. I see that Astromechanics have updated the driver on 20.7.2020 - do you know if that is the driver they sent you? Thanks

Hi Cuiv! Great review, thanks allot. What kind of little guidecam/scope do you have attached to the plate? Thanks

Bought one some months ago to use with my range of Canon and Sigma lenses, not used it yet but like you, I saw it’s potential and just bought one. I have a dozen various ZWO cameras and plan to use different side by side setups to more images in the same length of time. I also have 2 Canon 450D modified- one has the Baader filter and one is a deBayered Mono with Peltier cooling, I plan to use them side by side with Pentax M42 Super Takumar lenses, either with pairs of identical focal length or wide and high power. My systems are certainty a hybrid mix, including the ASIAIR Pro units to tablet control the mounts and imaging camera’s. In short supply are cloud free nights. Great series you are producing, the best I have seen so far, no music, pyrotechnics, and you are a computer whiz as well. I build my own computer gear but never got into writing software. All best wishes from down under, Southern Cross Observatories, (yes I built 2 with different gear /in each), Tasmania 42 South. 🇦🇺😁🔭 . Where did you purchase those small tube rings/ assemblies? I normally make all my own mechanical equipment, however, saving time at my age is becoming a higher priority!

Hey there! Great video as usual! Does it make any sense to buy it in order to use it with a DSLR instead of a cooled camera? I find focusing manually with a bahtinov mask is quite dodgy and of course can't be automated with a sequence in Nina

Thank you very much for this very interesting video! I just ordered a Canon lens controller from Astromechanics .. Now I have to wait about three weeks before playing with it. PS: it's for a Canon lens..

Great review on this rare adapter , can you drop the links to mount rings to hold camera lens and camera and base plate to attach

Amazing stuff. With the Astronomic adapter with usb, and I can see the adapter is connected to the ASI Camera, do you still need the Laptop to control Aperture ? or it can be all done with the App for ASIAir PRO.

Another great review. I agree on the ZWO adapter quality. Have one and is certainly not up to the mark. Hope to get one of these!

Quite an interesting tool. I would like to have it working with my 400mm/5.6L (plus teleconverter) and an astrocamera+filter wheel at the end of the year (for now, I plan to just use a dSLR body and my lenses on a mount). Any mechanical fit problems apparent with the current version? I guess that it's necessary to use ring holders, anyway...

If only this review was put a week ago I wouldn’t have ordered and received the ZWO adapter🤣 Oh well... Time to order these... Great job Cuiv.. Where did you get those mounting rings? Brand? I was looking for something similar for my setup as well... Clear skies 🌌

Hi, if we use two adapters stacked together, what are the downsides of this? One that comes to mind is less light will reach the sensor, is this true? Thanks.

Great video...would I be able to take down the focus position of each filter and just go straight to it on another imaging session - would I need to still fine focus?

Hey Cuiv, awesome info. I am getting a ASI174 mono mainly solar imaging but my idea was to do wide field shoots with my Canon 200mm lens. So, I was getting this camera with a filter wheel package. Do you know if the backspace will be enough for a filter wheel? I still think there is time to change it and get a color camera. - Cheers Kurt

Is this adapter for Canon EF-S lenses also

Danke!

Hi, Cuiv! Thanks a lot again for your video. I have a couple of lenses and would like to give it a try. Though I'm still using DSLR and the backfocus issue is an obstacle, is an interesting option when upgrading camera. I was wondering (from my ignorance about drivers and stuff like that), since a DSLR is able to control aperture and autofocus of a lens (and that could also be done via EOS utility software, al least for Canon cameras), why that feature cannot be used in a sequence like Nina? Or it's just a matter of adding a couple lines of code into the ascom driver as you did? 🙄

Here's a maybe weird question. Would something like this keep the optical image stabilizer locked inside a Sigma 100-400 lens? No matter how I take the camera body off, once it looses power, the OIS just frees up and part of the lens just rattles inside. Not ideal to shoot like this with an ASI camera. Any ideas how to lock it down otherwise?

Can you do autofocus in NINA with dslr lenses attached to a dslr? Has that been added since this came out? I think I can do fine adjustments with the canon app on pc and on my phone but I think it requires live view which might be an issue for NINA

Cuiv, do you know if they fixed the driver to allow use with NINA?

I have a Canon 18-135mm telelens. Will this work with this lens once I choose a focal length?

You are a genius

Hey Cuiv, out of curiosity what is the mount that you have this sitting on?

Is any backlash setting needed with this type of focusing??

An you tell me about that observatory at the end of your videos?

Two questions on thhis. I was told that the company is from Russia, so deliveries to the states have stopped. And has ANYONE used this on a regular DLSR camera? Would love to hook my DSLR up to NINA for autofocus. Just haven't found anything that works. Yes, I tried the plugin.

If NINA is open-source, would it be possible to change NINA so that if the focuser does not report on its temperature-compensating ability, NINA just assumes that it can't?

Of the list if things to have autofocus seems to be at the butt im.

I got this adapter in Oct, and I have NOT been able to get it to work, though it is a HUGE upgrade to the crappy ZWO adapter. I have never been able to get the AF to work, either using NINA, APT, or the Desktop Ap. It also does NOT adjust the aperture. I have only used it as a mechanical adapter. The driver (either Desktop or ASCOM) opens, and I find the lens from the drop down. I have my 70-200mm f/2.8L IS ii connected at this time. If I try change the Av from 2.8 using the drop down menu, nothing happens and the new Av option remains BLUE. The lens aperture remains wide-open. I am currently trying this with the Desktop Ap. I have tried this with direct connection to my Windows10 laptop, connected through a powered USB3 hub, and through my ZWO ASI183mm-Pro USB ports with the ASI183 powered and its USB3 connect to my USB3 hub. Nothing seems to work. When I attach my Canon EF300mm f/2.8L (orig. Non-IS, not in menu but I select the f/2.8L IS), I get the same results, with the very bad result of NOT being able to focus even manually (it is a focus by wire, so requires an electronic connection). I am sure that somehow I have not installed it correctly. What does it take to get it to control the lens? Can you send the corrected driver?

hello Cuiv hope you are doing well, if you want or know anyone want to sell this piece please let me know, I flipped the internet and find nothing, all out of stock i hope this message doesn't bother you :) CS

Boo hooo. I have Sony E mount lenses. Damn you Sony... You can't do anything with about eight mm which is the available width for back focus.

is it just me or is this video all out of sync lol

Here are the "thin" and "thicker" versions of the Astromechanics adapter connected to a pair of Canon f#2.8 200mm lenses. If you use the thicker adapter with an ASI 1600MC Pro camera then you can bolt the camera straight to the adapter for a very solid unit. You can also get at the camera front plate tilt adjusters as they lie outside the diameter of the adapter - and the fact that you are perhaps 2mm INSIDE the 44mm backfocus is an advantage as it means you can operate the lens BEYOND infinity to get a full V-curve for FocusMax. www.newforestobservatory.com/2022/02/17/miniwasp-major-upgrade-17-02-2022/

Shame they're not interesting in doubling their sales and making Nikon mounts...