Jean Dodge
Active member
Marc, you are getting a very good price on having that stepup ring machined. Here in the USA it would cost a lot more - you usually can't get a machinist to even START on a project without committing to $75 and hour or so.
I have the Sankor 16F and like most of us, I really don't know what the thread size is. I ordered enough eBay hong kong step down rings that if the ones I get don't truly fit I will at least have an idea of what the range is. I wish I had the same model as you, I would go ahead and ask you to get a duplicate of yours made for me. It's possible that with enough numbers that price might even come down.
As I mentioned, I'm just hand holding mine at present but it did teach me quick one focusing method. First I would focus the A lens with out the amamorphic and then set the same distance by scale on the Sankor. That seemed to work well enough for getting it roughed in.
Diopters are for making a lens focus closer than it was designed to - but usually at the expense of losing the ability to focus to infinity. The lucky thing about my sankor 16F is that the front threads on it are 52mm. I used my 52mm pola on mine to do the handholding tests.
I have the Sankor 16F and like most of us, I really don't know what the thread size is. I ordered enough eBay hong kong step down rings that if the ones I get don't truly fit I will at least have an idea of what the range is. I wish I had the same model as you, I would go ahead and ask you to get a duplicate of yours made for me. It's possible that with enough numbers that price might even come down.
As I mentioned, I'm just hand holding mine at present but it did teach me quick one focusing method. First I would focus the A lens with out the amamorphic and then set the same distance by scale on the Sankor. That seemed to work well enough for getting it roughed in.
Diopters are for making a lens focus closer than it was designed to - but usually at the expense of losing the ability to focus to infinity. The lucky thing about my sankor 16F is that the front threads on it are 52mm. I used my 52mm pola on mine to do the handholding tests.