Anyone know how much this lens cover? Searched everywhere and I cannot find a thing. Thanks!
Anyone know how much this lens cover? Searched everywhere and I cannot find a thing. Thanks!
Sorin
I b'lieve it is an f/4.5 tessar type. The f/4.5 tessar type coverage rule of thumb is that the lens will cover 115% of its focal length.
On another topic, I recall seeing posts by you, possibly on photo.net, up to perhaps a decade ago. Where have you been, are you well?
I have a 215 mm that covers 8x10
f/4.5, Dave?
Yes
I have a Paragon Anastigmat 12" but it's f 6.3. It covers 8x10. If anyone is interested I can mount it on the 8x20 and measure the image circle.
They made 2 versions? One was f 6.3 and the other was f 4.5?
John, they made an f/6.3 Commercial Ektar clone usually sold as Acutar and an f/4.5 jes' plain f/4.5 tessar type usually sold as Paragon. Also a 215/4.8 convertible Plasmat that was sold under many names including Acuton, Ilex Caltar, ...
Usually doesn't mean always. There were no rules in Rochester and no one followed them.
"There were no rules in Rochester and no one followed them."
To an old Rochesterian that's the best laugh today!
See also Kodak's use of the word 'Polymax'.
I'd appreciate it if you would mount it and let me know the diameter of the image circle. I have seen it mounted to a 7x17 banquet and wanted to confirm the circle would cover. My point being that when I obtain a 7x17 that can be mounted horizontally and vertically, I'll want a suitable lens for it. Thanks! John
Lessee now. 7 x 17's diagonal is around 467 mm. A 305 mm lens that covers 467 mm covers an angle of a bit over 74°. You're asking a lot of an f/6.3 Tessar, if that's what you meant.
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