NikonGear'23
Gear Talk => Lens Talk => Topic started by: bressong on June 03, 2023, 15:24:35
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hello NG, this is my first topic here
anyone can guess that what lense they are
(answer on page2)
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hello NG, this is my first topic here
anyone can guess that what lense they are
The rabbit ears with holes indicate it's two AI/Ais or AI-converted lenses
The position of the AI coupling ridge is at the 8+2/3 position , so these lenses are either f:1.8 or f:2 lenses max aperture
Max aperture of 1.8 or 2 leaves us with a 50mm as the most probable choice for both lenses
The lens on the R has three screws, so it's possibly the 50mm/1.8 AIS produced around 1982
The lens on the L has five screws, so it's possibly the 50mm/2 AIS produced around 1977
What did I win, a cigar?
Ciao from Massimo
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I don't think any of the lenses are AIS as the milled slot is missing so a camera like the FA could recognize the lens and use its special Program mode?
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The AI coupling ridge is wider on the lens on the right. So f/2.8? In which case we might speculate a 35mm f/2 or a 50mm f/1.8 and a 24mm f/2.8.
I'll settle for a jelly baby.
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The rabbit ears with holes indicate it's two AI/Ais or AI-converted lenses
The position of the AI coupling ridge is at the 8+2/3 position , so these lenses are either f:1.8 or f:2 lenses max aperture
Max aperture of 1.8 or 2 leaves us with a 50mm as the most probable choice for both lenses
The lens on the R has three screws, so it's possibly the 50mm/1.8 AIS produced around 1982
The lens on the L has five screws, so it's possibly the 50mm/2 AIS produced around 1977
What did I win, a cigar?
Ciao from Massimo
thanks for joining this game, you are almost there, but not the correct answer 8)
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I don't think any of the lenses are AIS as the milled slot is missing so a camera like the FA could recognize the lens and use its special Program mode?
ture, the AIS and AI lens
you can identify them from the crew numbers, the milled slot and the width of silver ring and the rabbit ear (folded/sheet metal or milled metal type) and...
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The AI coupling ridge is wider on the lens on the right. So f/2.8? In which case we might speculate a 35mm f/2 or a 50mm f/1.8 and a 24mm f/2.8.
I'll settle for a jelly baby.
aha ;D
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These are either Ai or AI-converted lenses. Might be 50/2 (left) and 35/2.8 (right), perhaps?
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on the subject of new toys, I found an M42 mount Meyer Primotar E/ "red V" 50/3,5 on a local market yesterday and could not resist picking up this late Tessar copy. No guessing games needed for identifying the constuction (aperture close to the rear lement like a reversed Elmar).
Not very high contrast even with its unusual focussing-aiding extra aperture opening beyond 3,5 (when closed down to f/8 afterwards.) but robust mechanics even if not of Nikon smoothness.
p.
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F2 full open by D800
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same parameter
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same parameter
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same parameter
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this lens impressed me much when you see the image qulity at corner when fully open
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the clear edge light spot in the bokeh is the feature of this lens
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I believe the bokeh of a photo is matter of optic design/scene/background/light contrast...
not an easy answer to tell
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the favorite one of this week
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f2
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So, one of them is the 28/2?
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So, one of them is the 28/2?
Nikkor 50/2 Ai
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f2 full open
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There was recent a thread about "Leica look". As I both have the vintage Nikkor 50/2 and Summicron 50/2 then it was the idea to compare the two lenses.
The Nikkor is about 50 - 80 USD on the used marked? and Summicron maybe 500 - 1000 USD?
It is my guess that the optical difference between the two lenses does not reflect the price difference. But I have not yet had time to perform the test.
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There was recent a thread about "Leica look". As I both have the vintage Nikkor 50/2 and Summicron 50/2 then it was the idea to compare the two lenses.
The Nikkor is about 50 - 80 USD on the used marked? and Summicron maybe 500 - 1000 USD?
It is my guess that the optical difference between the two lenses does not reflect the price difference. But I have not yet had time to perform the test.
indeed, the 50/2 is 6glass in 4 group, it's similar to early time summicron 50/2
I am very curious of the test from your nikkor 50/2 and leica summicron 50/2
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hello NG, this is my first topic here
anyone can guess that what lense they are
The lenses have an aperture of f/2, or maybe f/1.8 due to the position of the aperture indexing (AI) ridge.
Both are true AI lenses, due to the presence of the lens speed post at 7 o'clock position. AI converted lenses don't have this feature so they are not AI converted.
Both also have a thinner extension on top of the lens speed post, designed to give some protection to the rear element. That rules out the AI 85/2 and 35/2.
The one on the left has 5 screws in the mount and a very thick rear lens protector, both features of early AI lenses. The one on the right has only three screws and thinner rear protectors, so is a later AI lens.
The second picture shows the DOF scale. The one on the left has the coloured scale above the chrome ring and under the focus ring. The one on the right has the DOF scale on the chrome ring, usually found on later AI and AIS lenses. I note that this one also has an aperture coupling prong made of pressed sheet metal, the other is milled from solid metal. However, on the first picture both are milled from solid metal, so either the prong on the right was swapped or it is a different lens.
I would say the one on the left is an early AI 50/1.2 (I meant 50/2) and the right one is an AI (not AIS) 50/1.8 :)
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Well, from the second picture it is quite obvious, that the left one is 2.0 ;)
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What about the one on the right? If it is a 24mm f/2.8 then I could still win half a jelly baby :D
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The lenses have an aperture of f/2, or maybe f/1.8 due to the position of the aperture indexing (AI) ridge.
Both are true AI lenses, due to the presence of the lens speed post at 7 o'clock position. AI converted lenses don't have this feature so they are not AI converted.
Both also have a thinner extension on top of the lens speed post, designed to give some protection to the rear element. That rules out the AI 85/2 and 35/2.
The one on the left has 5 screws in the mount and a very thick rear lens protector, both features of early AI lenses. The one on the right has only three screws and thinner rear protectors, so is a later AI lens.
The second picture shows the DOF scale. The one on the left has the coloured scale above the chrome ring and under the focus ring. The one on the right has the DOF scale on the chrome ring, usually found on later AI and AIS lenses. I note that this one also has an aperture coupling prong made of pressed sheet metal, the other is milled from solid metal. However, on the first picture both are milled from solid metal, so either the prong on the right was swapped or it is a different lens.
I would say the one on the left is an early AI 50/1.2 and the right one is an AI (not AIS) 50/1.8 :)
NG is really a place gathering same hobby people here.
when I post the first game picture, I am not aware the 3 screws one is such complicated.
I should updolad the photo again in right direction
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Well, from the second picture it is quite obvious, that the left one is 2.0 ;)
correct, it's a original Nikkor 50/2 Ai
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now let's open the envelope.
the 5 screws copy is original Nikkor 50/2 Ai (35xxxxx), every aspect meet the Ai design: milled metal rabbit ear, 5 screw, no milled slot as Ais
the 3 screws copy is original Nikkor 50/1.8 Ai (18xxxxx), typically that AiS nikkor lens had the 3 screws, but this Ai50/1.8 only had 3 screws(I don't know why), other aspect meet the Ai design
both of them are my favorite lenses, I got several various copies of 50/1.8 earlier, recently got the 50/2 by curiosity after I read 50/2 paper in Nikon's "the thousand and one nights".
when I compare fully open image quality of nikon's Ai50/1.8 vs AIS 50/1.4 & AFD 50/1.4, I think 50/1.8 is better @f1.8, any 50/1.8 is smaller and lighter. but 50/1.8 is not very good at corner when fully open, center is good.
now I can make a test of 50/1.8 and 50/2, who is better, I will post later
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the 3 screws copy is original Nikkor 50/1.8 Ai (18xxxxx), typically that AiS nikkor lens had the 3 screws, but this Ai50/1.8 only had 3 screws(I don't know why), other aspect meet the Ai design
Early AI lenses have 5 screw in the mount, but after about a year of production, most lenses up to 85mm reduced to 3 screws (probably to reduce production costs).
The AI 50/1.8 is one of my favourite lenses - background blur is smoother than most other 50mm Nikons. The 7-blade aperture gives blurs a nicer shape in most situations than the 6-blade aperture of the 50/2. Sharpness is about the same.
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Early AI lenses have 5 screw in the mount, but after about a year of production, most lenses up to 85mm reduced to 3 screws (probably to reduce production costs).
The AI 50/1.8 is one of my favourite lenses - background blur is smoother than most other 50mm Nikons. The 7-blade aperture gives blurs a nicer shape in most situations than the 6-blade aperture of the 50/2. Sharpness is about the same.
50/1.8 longnose no matter ai or ais are all good.
But the pancake 50/1.8 and plastic AIS 501.8and afd 50/1.8 they had the compact optical design which I think is not a good improvement on image quality including the bokeh
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I checked another original Ai 50/1.8(17xxxxx), it's 3 screws too! amazed
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thanks for joining this game, you are almost there, but not the correct answer 8)
Well, except that I overlooked the absence of the AIS milling, I got both the focal length and max aperture of both lenses.
I had to take more time to scrutinize the photo to notice the absence of the milling, but still I'm satisfied!
It was impossible for the lenses to be 35, 28 or 24 mm, the rear lens element would have been much smaller.
Ciao from Massimo
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Well, except that I overlooked the absence of the AIS milling, I got both the focal length and max aperture of both lenses.
I had to take more time to scrutinize the photo to notice the absence of the milling, but still I'm satisfied!
It was impossible for the lenses to be 35, 28 or 24 mm, the rear lens element would have been much smaller.
Ciao from Massimo
no doubt, you are one of the pro ;D
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It seems I have a few of the 50/2. They often followed a Nikkormat body when I collected those.
There may be a couple more 50/2 around. I also have a couple of the 50/1.8.
I wonder which of my 50/2 that are sharpest......it would require a test.
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It seems I have a few of the 50/2. They often followed a Nikkormat body when I collected those.
There may be a couple more 50/2 around. I also have a couple of the 50/1.8.
I wonder which of my 50/2 that are sharpest......it would require a test.
wow, nice collection!
I am not sure if it is ture that Ai 50/2 is less to see on the 2nd hand market, compare with Auto 50/2 H/HC and pre-Ai(K) 50/2
yours are really in good condition.
and I find even the same Ai version, the coating/enlightening color is different
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Yes, there are pure purple coating for the single coated versions. Then the multi-coating seems to be a mix of purple and green.
I know there should be a rare version which is called "white-face" where the ring at the front (where Nikon, 50mm etc. is printed) is pure aluminium with black engraving.
I have only seen one which was a bit worn but price very high.
For the compare with Leica Summicon I will use a Kogaku version. I found one already mounted in a Z-adapter. I think it is from same period as the DR-Summicon. So will be fair to compare those.
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Yes, there are pure purple coating for the single coated versions. Then the multi-coating seems to be a mix of purple and green.
I know there should be a rare version which is called "white-face" where the ring at the front (where Nikon, 50mm etc. is printed) is pure aluminium with black engraving.
I have only seen one which was a bit worn but price very high.
For the compare with Leica Summicon I will use a Kogaku version. I found one already mounted in a Z-adapter. I think it is from same period as the DR-Summicon. So will be fair to compare those.
Ai/AIS 50/1.8 were my favorite, and now Ai 50/2 comes, hard to tell which is ture love, but my don't use the AIS 50/1.4 often, full open is blurred
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I have two copies of the 50/F2 AI, and got that the first is an earlier one, and the second not one, but had no others to compare with it. I have the earlier version shown on the left, and a later, 3-screw version, which is essentially similar except for the flange screws, with the thicker upper boss (name not known) and the double-spanner threaded rear lens mount.
I've never had a factory-converted AI lens, only home milled conversions, but assume that those also did not have the lens speed post, since certain AI cameras like the F4 disallow all conversions from the matrix metering function.
I don't use these much these days since I'm using DX, and have the 16-80 which is grand for traveling, but back in film days this was a favorite, one of those lenses that's just inherently good at everything. I have not raced my two to see if there's a sharpness difference, but now that the subject is raised, perhaps I'll give it a try.
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Yes, there are pure purple coating for the single coated versions. Then the multi-coating seems to be a mix of purple and green.
I know there should be a rare version which is called "white-face" where the ring at the front (where Nikon, 50mm etc. is printed) is pure aluminium with black engraving.
I have only seen one which was a bit worn but price very high.
For the compare with Leica Summicon I will use a Kogaku version. I found one already mounted in a Z-adapter. I think it is from same period as the DR-Summicon. So will be fair to compare those.
time to do the comparison test ;D
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My two are 3506433 (5 screw) and 3732756 (3 screw) and both have identical coatings, green and purple. There's no discernible difference between them except for the flange screws and the fact that the first version says "lens made in Japan," and the second just "made in Japan" with no white paint.
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My two are 3506433 (5 screw) and 3732756 (3 screw) and both have identical coatings, green and purple. There's no discernible difference between them except for the flange screws and the fact that the first version says "lens made in Japan," and the second just "made in Japan" with no white paint.
I also see this difference on "made in Japan"
Seems the earlier AI was the most good built quality.
Later ai and AIS more or less reduce some cost from manufacturing.