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Hi Pau,Pau wrote:Outstanding image!
What's the focal length of the Sigma Life Size attachment?
Is better to use it in normal or reverse orientation?
I have one at a drawer and I plan to get the adapters....
I own a few of the life-size attachment sigma lenses, at least 5, and they measure:
147mm extension + 46.5 register distance or = 193mm FL.
I have used them in both forward and reverse.
Online I read on a astro-photo forum that Sigma uses UD glass in the diopters. That would explain the good CA correction.
The best thing about the Sigmas? I picked up a couple last month for $6 and $10 each.
Sometimes you can find a nice Sigma 90mm macro lens for way less than $100 with the life-size adapter included.
Pau, Robert, thank you for your comments !
If I remember correctly - 196mm (cannot check again, my camera is dead, something happened to the aperture control unit, sent to Nikon SC ). I'm using in the normal orientation. Again , if I remember correctly - in reverse I had some softness at the edges.Pau wrote:...What's the focal length of the Sigma Life Size attachment?
Is better to use it in normal or reverse orientation? ....