p.3 #1 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
genji wrote:
Hahah! I’ve learned never to say never regarding lens purchases but that’s highly unlikely. I suspect your request would be received far more favourably by Guy.
Bastian has a 7a 1.25/75 coming and we plan to do a comparison. But that is of course on the thicker stack. I am curious how much better it will perform on a thin stack. Especially at portrait distances where I am only happy with the result in the very center at f1.5.
p.3 #6 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
I’m thinking of getting it. Need a little length. 12,21,50,75 maybe and a really nice vacation planned. I need longer than 50. Selling my Sigma 35 1.4 and I’ll address a AF lens latter. Nothing interesting on the AF front that works for me. Maybe the Sony 35 1.8 will see next month
p.3 #8 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
buggz wrote:
Yes, I'd love to see such a comparison test.
Phillip Reeve has already reviewed the CV 75/1.5 and evidently someone on their team will review the 7A 75/1.25. Not a direct comparison but their methodology is consistent so it shouldn’t be difficult to show the important differences between the two lenses.
p.3 #9 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
Fred Miranda wrote:
Nice samples! Are those all wide open?
Thanks, Fred. Aperture values with the Leica are only approximate because there's no communication between lens and body. The M10-P estimates a value (based on the ambient light, ISO, and shutter speed) if a coded lens is mounted or, for lenses without 6-bit coding, if a lens profile has been chosen manually. I chose the Summilux-M 75/1.4 profile as the best approximation for the CV 75/1.5. The estimated value is meant to be accurate to within ±1/2 f/stop and this has been my general experience with a range of different lenses.
The EXIF data for each of the four pictures you asked about shows f/1.4 (in other words f/1.5) but I recall that I was shooting at both f/1.5 and f/2 at that time of the day so, while I can't guarantee that all of them were taken wide open, it was either of those apertures.
p.3 #10 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
Check out the bokeh and resolution comparisons of the 75 Lux wide open vs the CV 75/1.5 on an m10-p. Tripod mounted, unedited except to bring down highlights on the test chart comparison.
p.3 #11 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
fsiagian wrote:
Do you think it’s a worthy update from the 75mm 1.8?
I haven't used the Heliar 75/1.8 but, based on my experience with the Color-Heliar 75/2.5, Nokton 75/1.5 and Summarit-M 75/2.5 lenses and given that Stephen Gandy regards lack of sharpness wide open as the Heliar's best feature, I'd say the Nokton is streets ahead.
p.3 #12 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
NRKStudio wrote:
Check out the bokeh and resolution comparisons of the 75 Lux wide open vs the CV 75/1.5 on an m10-p. Tripod mounted, unedited except to bring down highlights on the test chart comparison.
p.3 #13 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
genji wrote:
Thanks, Fred. Aperture values with the Leica are only approximate because there's no communication between lens and body. The M10-P estimates a value (based on the ambient light, ISO, and shutter speed) if a coded lens is mounted or, for lenses without 6-bit coding, if a lens profile has been chosen manually. I chose the Summilux-M 75/1.4 profile as the best approximation for the CV 75/1.5. The estimated value is meant to be accurate to within ±1/2 f/stop and this has been my general experience with a range of different lenses.
The EXIF data for each of the four pictures you asked about shows f/1.4 (in other words f/1.5) but I recall that I was shooting at both f/1.5 and f/2 at that time of the day so, while I can't guarantee that all of them were taken wide open, it was either of those apertures....Show more →
Thanks Jonathon,
I see a jump in contrast between f/1.5 and f/2. However, I really like f/1.5 for portraits. (slightly more spherical aberration)
p.3 #15 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
From other examples on the web and the above by NRK (wow), Cosina's golden run continues. The focal plane seems to get a good jump out from the image even at longish portrait distances, the above chart shows why. An E version, please. [It's a beautiful focal length, d.s. - once tried, many will agree]
p.3 #17 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
Fred Miranda wrote:
At center, it should not make much difference and it's possible that moderate field curvature is a characteristic of the lens. The only way to know for sure is to test it on a Leica or Kolari modded Sony body.
Love the contrast and colors from the samples!
BTW, too bad about the field curvature. Is it wavy?
Not bad field curvature on the m10p at all Fred. Nothing as strong as the 50/.95 Leica, when both are on an M body.
p.3 #18 · CV Nokton Aspherical VM 75mm f/1.5 First Impressions
Phillip Reeve wrote:
Bastian has a 7a 1.25/75 coming and we plan to do a comparison. But that is of course on the thicker stack. I am curious how much better it will perform on a thin stack. Especially at portrait distances where I am only happy with the result in the very center at f1.5.
Here’s the same shot as the one above on the 7r3. I’ll take some shots of portrait distance on center, on the m10p, that should relate to the thin stack.
Also, I compared the CV75 to the 75 Summilux above, where I should be comparing it to the Leica 75 APO Summicron. Compared to the 75 Lux, the camera reads about a 1/3 drop or more of light loss when switching lenses. Thus, it’s not really gathering f1.5 amount of light. according to the m10p it’s closer to f1.7 or so. I doubt the difference in resolution would be so dramatic as my previous test if I compared the CV75/1.5 to the Leica 75/2 APO Summicron.
Regarding build quality: the aperture does not have that strong, audible detent common to the CV 50/1.2, CV35/2 or even the CV65/2. Mines a slight bit mushy, like some of the older Leica lenses. The focus throw and resistance is great though. The lens is relatively light weight as well. My other chrome lenses (Zeiss 35/1.4 ZM, Leica 50/2 APO, etc.) feel much more solid and heavy than the 75/1.5.
All in all, I was excited to use the CV75, and it didn’t really disappoint. It’s sharp on center, has smooth bokeh, very minor field curvature, really low amounts of CA, no focus shift (!!), and decent ergonomics.
