Perfect. Bought for my HELIOS lens, no distortion.

I have a Nexstar 103 SLT computerized refractor telescope and to me the 1,2,or 3 star alignment sucks. You have to be a contortionist to be able to look at anything through it and half the time I had trouble with aligning it. I saved all the money for the CPC 800 XLT and was like a kid on Christmas Day when it arrived. It has been raining here in Oregon for 4 months and seeing the sky is hit or miss.The Moon peaked out of the clouds and I had my Canon T5i mounted to the visual back and got some decent pics of the Moon. I've heard people whining that it is too heavy;BS! It is well made and the reason it is heavy is because it isn't plastic. It is well constructed and the optics are very good. I am 63 years old and have a partially paralyzed right arm and I can set it up in less than 5 minutes. I highly recommend this scope and combined with the wi-fi adapter from Celestron and the free Skyportal app, a 6 year old could get it up and running in less than 10 minutes. My only regret is that I didn't have enough cash to get the 11" scope. Good scope, Good Price. That's all I got to say about that.

Are use this Lens mount on my new canon M 50, unfortunately the camera was defective but the lense mount did its job.

I got these to use with my Helios 44M-4 vintage lens, which has a 52mm filter thread. They have a slightly blue color tint which is so barely noticeable that I had to use do comparisons with an RGB parade in Adobe Premiere to see it (I got these for video), although it seems to be worse with the darker filters. It's hard to complain about at this price, and it's the sort of thing that can easily be mitigated with manual white balance. I also haven't noticed any artifacts in the bokeh, like the squiggly lines you sometimes get with cheap plastic filters. Overall, I would say this is a good low-budget solution.

I use this tripod to hold a Helios Lightquest 25X100 HR binocular (4kg) I put a fair bit of money into the binoculars and wanted a good mount. This really finishes my observation setup.

Seriously solved all my lighting problems in my 103 year old garage with one single fixture.

These bad boys survived -6 degrees all the way up to 103. Haven’t had any issues whatsoever.

LightEasy InstallCompatable with Acer Helios Predator 300For lightish gaming storage is okPersonally think 1TB should be about half the price these days since games are 60-90Gb each.