A case of Gigantism!
A case of Gigantism!
Is it bigger than the noctilux? I still havent seen them side by side.
It is also similarly larger than Voigtlander's own 50mm f/1.5 Nokton, as you can see in this post.
Amazing how much more glass it takes to squeeze out one more f/stop (more or less.)
The 50/1.1's extra length also interests me, especially since the tapered rear section (held on by externally-visible screws) seems to be mostly empty except for the coupling cam. I wonder if Cosina designed this lens with extra depth so it might be seen eventually in mounts for (say) Nikon and M42 SLRs, as with some of their other lenses...?
Sorry, I don't have a direct comparison of the Nokton F1.1 with the Noctilux, Nor have I seen one posted anywhere that I can find.
What I can tell you though, is that the Nokton takes the same filter size (58mm) as the F1 Noctilux and I have read that the lens design is a copy of that lens, but with less resultant light fall off and better contrast.
No comparisons with the F0.95 Noct yet that I know of.
Ranger, 1 F stop (more or less) is double the light exposure, hence 2x the light falling on the senor. The math can be derived from there.
Coverage is a factor as well as aperture, of course. My Voigtlander 35/1.2 lens is nearly as big as the 50/1.1... whereas I've got a C-mount 36mm f1.1 lens that's small enough to lose in a coat pocket. I'm sure Voigtlander could have made all these lenses a lot smaller if they had been trying to cover only the extant digital imager sizes. But everybody's still dreaming of that putative 36x24mm "Leica M9", "Nikon SPd", "Epson R-D 2", "Sony Hexar RFd", or whatever...
Or maybe they are still shooting film...
So can someone tell me how much faster the .1 difference makes between the two lenses? In a scenario where I shoot at f/1.1 with the nokton at lets say 1/30, how much faster can I shoot at f/1 to get the same exposure?
~1/3 stops : f/# 1.0 1.1 1.2 1.4 1.6 1.8 2 2.2 2.5 2.8 3.2 3.5 4 4.5 ...
However if the lens is so big or too expensive that you leave it at home - then it's all academic.
Last edited by FrozenInTime; 9th July 2009 at 16:46.
I'm sure if the ultra-wide 15mm f/4.5 was joined by a 15mm f/2 that only covered a x1.3 or x1.6 crop sensor, it would be the f/2 that was flying off the shelves in greater numbers.
If in the future FF sensors become the norm - the VC wins again, as it's customers then buy newer lenses - at that time.
But for now µ4/3* might represent a big enough opportunity/market to make smaller image circle lenses a valid proposition.
(* VC being a paid up member of the micro4/3 circle - may give us a indication that such things are being considered)
I was somewhat shocked by the size of the Nokton 1.1 when it arrived from Robert White this morning.
Last edited by gDallasK; 13th July 2009 at 08:12. Reason: Correction
Too many cameras, too little time.