I've recently purchased the Astrodymium Ring System for my Samyang 135 camera lens. Let's have a quick look at its features and also a comparison to a simpler option from PrimaLuceLab which I've been using for the past couple of years. I'm using Canon Lenses here but I'm sure this can be achieved with Nikon or Sony setups and the relevant adaptors.
Негізгі бет Astrodymium Ring System for Astrophotography
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