janewastro

42 minutes ago, Elp said:

Best to use the rings designed for the application:

https://www.firstlightoptics.com/zwo-accessories/zwo-holder-ring-for-asi-cooled-cameras-78mm-diameters.html

The holes in the base are very odd though as they don't align with what I've attached it to very well, you'll need to source like I did some cap head screws, washers and nuts to attach to a dovetail bar. Mine is mounted directly onto a cheese plate so I can also put on some longer screws into the cheese plate acting as physical stops securing the camera/lens from moving forward or backward.

Thank you! I was intending on getting one of these at some point to use with wider lenses so I might just go with this option. I was just unsure if it would result in some sort of stress/flexing between the camera and lens considering the ring would be away from the centre of gravity by a bit. Perhaps a combo between this and the WO ring could work to balance it out. 

56 minutes ago, powerlord said:

I don't get much. I don't even get much with my FF 6D on it.

 

@janewastro you might want  to see if you have a friend that can 3d print something for you especially if you plan to use an EAF with it. I use modified versions of this:

https://www.thingiverse.com/thing:4667525

I have 4: One on my SY135, a canon 300mm, a redcat and a spare for mounting pretty much any lens.

 

stu

Thanks for this! I am however looking for non-3D printed solutions as I have bought two previous 3D printed rings for this and both have failed quickly. I do see many people using them, but I don't have confidence in them anymore because of this. 

Hi all,

I'm looking for options to mount my Samyang 135mm and ASI533MC Pro to a dovetail. I've heard the ring for the William Optics Red Cat fits well on this lens. Are these the correct rings and do they support the camera and lens well on the dovetail? Are any additional rings needed to support the weight or will just the one suffice? I'm considering getting the ZWO Camera Ring as well to support the weight better, but this will have to wait until a later date.