prime lenses...

[rurgis]

ahoj!

just got hold of a beaulieu 6008s, and are now thinking of starting to look around for a nice set of prime lenses.
although ive heard talk about it ive never gotten a straight answer on what is the focal lenght on a "normal" lens for the super 8 format... is it like a 12mm?
also...is it a rule, that a lens intended for 16mm doubles its focal lenght, when put on a super8? in this case- is there a difference netween regular8 and super8?

for people knowing the 6008s (or maybe all super8 cams)- how wide can one go without getting severe vignetting?

-jarand

[christoph]

although ive heard talk about it ive never gotten a straight answer on what is the focal lenght on a "normal" lens for the super 8 format... is it like a 12mm?

problem is that a lot of different definitions exist for "normal" focal lenght.. one definition is the diagonal of the frame equals the normal focal lenght which would mean 7.1mm .. which pretty much hits what i'd call "normal" (maybe 8mm)

also...is it a rule, that a lens intended for 16mm doubles its focal lenght, when put on a super8? in this case- is there a difference between regular8 and super8?

16mm lenses dont double its focal lenght but rather narrow the viewing angle when put on 8mm/super8 cams.. but the result is that you get about the half field of view, so a 12mm lens put on a super8 camera will give yu about the same picture as a 25mm lens on a 16mm camera (depht of field changes though).
regular8 and super8 will show small differences as well, but prolly not enough to worry abut it.

for people knowing the 6008s (or maybe all super8 cams)- how wide can one go without getting severe vignetting?

this is actually a question about lenses rather than the camera... with 4mm you enter the super-wide area.. 3mm might be possible but i've never seen it. theoretically it should be able to get 2mm and maybe even 1mm ....

in any case you're looking at very distorted images here.

++ christoph ++