22 votes
Accepted

What is this old 50mm f/1.9 lens?

Your lens is a Yashica ML 50mm f/1.9. The one pictured below is a more recent version of the same lens. The mount is the CONTAX/Yashica mount. Yashica revived the Contax name over a decade after ...
Michael C's user avatar
  • 175k
15 votes
Accepted

What do these curved, color-coded lines mean on a vintage Nikkor lens?

The aperture ring is engraved with f-numbers duplicated; the duplicates are color coded the same. The lines you are asking about are also paired, same color. The idea is to graphically display the ...
Alan Marcus's user avatar
  • 39.2k
12 votes

Can you identify this M42-mount lens?

Just based on visual comparison, this lens appears to be a Helios 44M-4 58mm f/2-16. From the images you linked to, it appears that part of the lens is missing. In the 2nd image, around the lens ...
scottbb's user avatar
  • 32.7k
9 votes

What is this old Zeiss Tessar lens, with a large mount ring with six holes?

This is a "process" lens used to make copies on high contrast film for reproduction in newspapers, magazines, and books. The lens mounted on a square wood board with hole for the lens. The lens ...
Alan Marcus's user avatar
  • 39.2k
9 votes
Accepted

What is the crank on the side of this lens used by David Douglas Duncan?

The crank is for rotating the prisms in front of the lens. Prismatic lenses place prisms in the optical path of the lens. These provide a unique special effect. If you look at the front of the lens in ...
Michael C's user avatar
  • 175k
9 votes

What can I do with a broken lens?

Take it apart to see how it was constructed. Fix it. (I know you said you don't want to, but while disassembling it, you might find something easy to fix.) Optics experiments? I don't have any ...
xiota's user avatar
  • 27k
8 votes
Accepted

What's causing this white smudge in the middle of the photo?

Some film era lenses could produce this effect on digital cameras, it's called a "hot spot". The reason is that unlike film emulsion, which is matte, digital sensor is glossy (as it's composed of ...
lightproof's user avatar
7 votes
Accepted

Helios 44 M - knurled knob with red W or M marking - purpose?

That letter is not a W, but rather an M for Manual. Normally I would expect an A (for Automatic) on the opposite side of the slider. It is used to (de)activate mechanical aperture linkage to the ...
ad42's user avatar
  • 854
7 votes

What lens mount does my Fujinon135 f/3.5 lens have?

X-Fujinon says it all - that's Fujica X-mount, the one Fuji used on their SLR cameras from the early 1980s, before current mirrorless X-mount. Fujica X-mount has focal flange depth of 43.5mm, so ...
elkarrde's user avatar
  • 416
7 votes
Accepted

Canon EF 75-300mm f/4-5.6 III vs EF 100-300mm f/4.5-5.6 USM

The 100-300mm f/4.5-5.6 USM is a better lens than the 75-300 III. It is sharper, has better build, and most importantly has very fast Ring Type USM Auto Focus. It also has a non-rotating front element ...
Mike Sowsun's user avatar
  • 12.2k
7 votes
Accepted

How to identify the original manufacturer of lenses branded Vivitar?

During the 1970s and early 1990s, Vivitar serial numbers took the following form: MM Y WW SSS     MM = manufacturer code     Y = year; may be ambiguous, for instance 1979 and 1989     WW = week     ...
xiota's user avatar
  • 27k
7 votes

What does the red R in old manual lenses mean?

This sign is used when you focus for infrared light (using IR film or filter). It can be in form of red dot or line. This is need because the IR light wave length is longer than visible light and you ...
Romeo Ninov's user avatar
6 votes

How can I modify my NIkon D5500 so I can make a vintage lens auto focus?

How can I modify my NIkon D5500 so I can make a vintage lens auto focus? You can't. I learned that using a TC-16A AF Teleconverter 1.6X might help ... Whatever you learned is probably wrong. From ...
inkista's user avatar
  • 52.1k
6 votes

Do old manual focus prime lenses give better image quality than new kit lenses?

Does old mf lenses give better image quality compared to new kit lens? You'd have to test it, or find tests others have made with those specific lenses. "Old MF lens" spans a huge range of image ...
Warren Young's user avatar
  • 5,224
6 votes

What is the effect of lens haze on images?

I'm considering buying an old manual focus prime lens for my DSLR. Be aware that you ( at best ) will lose not only autofocus but also auto metering ( you'll have to set exposure manually ). Be ...
StephenG - Help Ukraine's user avatar
6 votes
Accepted

Graphlex 4x5 Lens Hood and Filters - How Do They Mount?

Filters are mounted using a “filter adapter”. These were aluminum rings with a diameter slightly larger than the lens barrel. Various sizes were commonly available and we selected one that just ...
Alan Marcus's user avatar
  • 39.2k
6 votes

What is this mount with two buttons on side of Vivitar 75-205mm lens?

I believe this is an Olympus OM mount lens. The lens release button and aperture stop-down button opposing each other are a dead giveaway. Also, unless I'm mistaken, the engraved lettering in the ...
scottbb's user avatar
  • 32.7k
6 votes
Accepted

What does the red R in old manual lenses mean?

So far the answers have not correctly explained just how to use this red mark. They talk about correcting the focus point by moving the focus setting. But they do not explain the need to make the ...
mhoehne's user avatar
  • 76
5 votes

Do old manual focus prime lenses give better image quality than new kit lenses?

1) First of all. Forget the "bad reviews"... forget the reviews in general. If you like the way your lens works, enjoy taking photos. You need to test your lens and know the specific flaws you detect. ...
Rafael's user avatar
  • 24.8k
5 votes

What is this Hermagis lens?

The imprint is probably 'HERMAGIS OPTn Bte S.G.D.G PARIS OBJECTIF CINEMA' Hermagis OPTn (Opticien) was an optical manufacturer located in Paris during the second half of the 19th century or so. '...
jarnbjo's user avatar
  • 3,282
5 votes

What is the difference between Dandelion focus-confirmation chips and others?

Sorry, I don't have the 5D Mk IV but I expect the 5D Mk III should be similar. Not all AF confirmation chips are created equal. There are 1st gen, 2nd gen, 3rd Gen, and 4th Gen. I think only the 4th ...
Mike Sowsun's user avatar
  • 12.2k
5 votes

How can I mount a non-AI lens on a Nikon F4?

I figured it out! Yes, the meter coupling tab is the tab on the ring on the camera that spins together with the aperture ring on the lens. In order to lift it, you first need to press inward the ...
Aram Hăvărneanu's user avatar
5 votes

Why is the aperture of this old lens showing as centered blue glare?

This looks to me like reflection from the sensor to the rear element and back again. Film is less reflective than digital sensors so some older lenses have either no anti reflective coating on the ...
Joseph Rogers's user avatar
5 votes

Why is the aperture of this old lens showing as centered blue glare?

Yes, that's because the adapter you're using - it is not possible to adapt Minolta MC/MD lenses to Canon EF while retaining focus to infinity without an adapter that has corrective optics (and ...
elkarrde's user avatar
  • 416
5 votes

What do these curved, color-coded lines mean on a vintage Nikkor lens?

The unpaired red line is the infrared focal point, if you're using infrared film.
awerhwerh's user avatar
5 votes

Decrease FF lens focal length for use on APS-C and still have it focus?

This is exactly what a telecompressor/focal reducer/"speed booster" is for. It can be bought as a ready made unit with a choice of mirrorless camera mounts on one side and a choice of SLR/...
rackandboneman's user avatar
4 votes

How do I adjust aperture and ISO when using a manual lens on a Canon Rebel?

Vivitar manual telephoto lenses have no electrical communication with the camera. You can disregard any instructions that came with the lens because that lens was meant to be used on film cameras ...
Mike Sowsun's user avatar
  • 12.2k
4 votes

Can I use Canon lenses on a Nikon dSLR?

Since the registration distance for the Nikon F-mount is larger than the registration distance for the Canon EF-mount, there is not a simple adapter that will work well, still allow infinity focus, ...
Michael C's user avatar
  • 175k
4 votes

Using a manual lens on D5100

1) I don't think that AI versus AI-S matters, as far as lens compatibility goes. The S was an extra mechanical feature that was developed just before electronic communication between lens and body was ...
David Rouse's user avatar
  • 4,026
4 votes

What is this Angenieux lens?

I have one of these lenses mounted on a Norelco PC-70 studio camera. I believe the plumbicon tubes were 30mm in diameter. The lens would not cover a full frame 35mm unless you were using a ...
Pat Branigan's user avatar

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