raid
Dad Photographer
I agree with you regarding the 3 color mark on the front of the APO lens. It is not needed.
I am getting a CV 50 2 APO. Are you too?
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james.liam
Well-known
The 3-color bands are a long-standing motif for CV. On every APO lens at least since the SL-series (90, 125, 180). Tradition.
We eagerly await your comparison!
Goes further back than that, all the way to the Voigtländer Bessa II Apo-Lanthar 4.5/105mm released in 1954.
Tim Gray
Well-known
Got my tracking number! Looking forward to this lens, not that I ‘needed’ it.
james.liam
Well-known
I stand corrected. I knew they went back though I could not recall how far back.
I like the stripes, they tell you which colors the lens is corrected for.
My Pentax Ultra-Achromat is corrected for 4 colors, but they are not marked. One would have to glow under UV light.
My Pentax Ultra-Achromat is corrected for 4 colors, but they are not marked. One would have to glow under UV light.
raid
Dad Photographer
OK then. I did not know this fact on color correction.
That's what the "Apo" in the name means. Apo or Apochromatic lenses are designed to bring three colors into focus in the same plane – typically red (~0.620 µm), green (~0.530 µm), and blue (~0.465 µm). The three coloured rings (which are red, green and blue... ta da!) around the barrel of the lens indicate the lens is colour corrected for those colours, or in other words, designed for use with colour film. That was a big deal back in 1954 when B&W film was the norm and colour film was still gaining popularity.
https://en.wikipedia.org/wiki/Apochromat
raid
Dad Photographer
Thanks for the clarification.
I should have said that I do not know that the color corrections are resembled with the three colors on the lens front.
I should have said that I do not know that the color corrections are resembled with the three colors on the lens front.
robert blu
quiet photographer
Thanks for the explanation. Is this important for both colour photography and B&W or more for colour?
I'm very ignorant on the topic, time to learn a little.
huddy
Well-known
I don't really NEED another 50. I already have the following
Nikon
50 1.2 AI-S
50-135 3.5
58/1.4 AF-S
Pentax 67
105/2.4
At some point though I'll probably pick up a Nikon Z which means there will likely end up being a 24-70/4 to cover the 50 range also, but I'm intrigued by having a nice modern manual 50 or something that can also point on my M6. I've always been intrigued by the Hexanon M 50/2, but the 50 APO in M or E mount sure look nice. Hard to justify another high dollar 50 though.
Nikon
50 1.2 AI-S
50-135 3.5
58/1.4 AF-S
Pentax 67
105/2.4
At some point though I'll probably pick up a Nikon Z which means there will likely end up being a 24-70/4 to cover the 50 range also, but I'm intrigued by having a nice modern manual 50 or something that can also point on my M6. I've always been intrigued by the Hexanon M 50/2, but the 50 APO in M or E mount sure look nice. Hard to justify another high dollar 50 though.
Highway 61
Revisited
Both, Robert. Significant chromatic dispersion with panchromatic B&W film may produce unsharp results.
Yet, with film, the APO technology and its derivates (low-dispersion glass) were mainly interesting (image quality and price wise) for telephoto lenses, from 135 mm onwards for 24x36 format. With the new +-50MP FF sensors, it becomes mandatory with shorter focal lengths... Nikon now use their ED glass even for kit zooms for instance.
james.liam
Well-known
A 50 APO (CV or Leica) is unlike any of your 50's. And yes, you will notice the difference.
Ccoppola82
Well-known
Mine has arrived and is now safely planted on my M246. Nice lens. Not surprisingly it is excellent build quality. The focus throw is also really reasonable as well. I can get a full rotation with one turn. If I get time I might go out shooting with it later.
raid
Dad Photographer
raid
Dad Photographer
I was thinking along the same lines, Robert. How do the color shifts impact B&W images? I also wondered if film versus digital sensor plays a role here too.
Yes, there is room for learning!
Highway 61
Revisited
raid
Dad Photographer
Thanks for the link on apo
raid
Dad Photographer
I have just received in the mail a small parcel. It is most likely the APO lens.
I will open it soon today.
I will open it soon today.
Tim Gray
Well-known
Got mine. Took two quick pics to check focus and it seems good to go! Got the hood as well but I doubt I will use it much.
I wish it was a bit smaller, but it’s not big. A hair larger in diameter than the 50/1.4 ASPH, and a bit shorter. I’ve been spoiled by the C-Sonnar size. I’ll try to do some quick comparisons between these three lenses but don’t hold your breath 🙂
Looks like it is going to be a great lens.
I wish it was a bit smaller, but it’s not big. A hair larger in diameter than the 50/1.4 ASPH, and a bit shorter. I’ve been spoiled by the C-Sonnar size. I’ll try to do some quick comparisons between these three lenses but don’t hold your breath 🙂
Looks like it is going to be a great lens.
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