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12 votes

Why is f-stop number 8 in orange on my lens?

If you move the focus ring, you will find the the 3m/9ft mark is also in orange. Many Pentax wide angle lenses use an orange marking at f/8 which corresponds to an orange hyper-focal focus distance ...
  • 11.4k
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 ...
  • 31k
10 votes
Accepted

Got my first vintage lens (Carl Zeiss Jena Pancolar 50mm f/1.8) - what's this lever for?

This is the first, "zebra" version, optically the same design as Pancolar 2.0/50. The aperture control switch ("tumbler") should have 2 positions, "A" is counter-clockwise when looking at the front ...
  • 2,001
9 votes
Accepted

Why is f-stop number 8 in orange on my lens?

Many lenses from that era had the f/stop calculated by the lens designers to be the "sharpest" or "sweet spot" marked in a different color than the other f-numbers. A cursory survey of a couple of ...
  • 169k
4 votes

Why is f-stop number 8 in orange on my lens?

The lens comes from the good old days of film based street photography. At that time there was a philosophy of "f8 and be there" - you can read a bit more about it on https://www.adorama.com/alc/...
  • 5,900
4 votes
Accepted

Can I fix a M42 50mm lens myself?

Provided you have more than average skills with fine mechanics, it can be done. The lens focusing mechanism has a couple of guide rails, which are probably loose and must be reattached in order to ...
  • 191
4 votes
Accepted

Can I use a 35mm film lenses on Micro 4/3 at the same focal length?

The focal length stays at 50mm, but the field of view will be that which you would get from a 100mm lens on 35mm film. Depth of field characteristics at a given aperture will be that of a 50mm lens. ...
3 votes

Has anyone had consistent success in using M42 lenses via adapter on the 5D MkIV?

I have used adapters for both Pentax M42 and Nikon lenses on my Canon EOS 5D Mk III. Some lenses will have mirror interference at infinity or long focus distances, where the rear element moves closer ...
  • 11.4k
3 votes

Rainbow flare effect on Industar 50-2

I think the lens flare is a side-effect 2 things: simple Tessar lens design, and little or no coatings on the lens elements. There's probably nothing you can do to "accidentally fix" the flare on this ...
  • 31k
3 votes

Is an M42-to-Nikon F adapter with focus to infinity really mechanically impossible or just dangerous?

Ordinarily, it is impossible to use an unmodified M42 lens on a body with a Nikon F mount with an adapter that maintains infinity focus without the use of additional optics. Exceptions will be ...
  • 26.4k
3 votes

Are there drawbacks to using a lens adapter?

There no significant disadvantage (but see the link in the comment above). However when you say 28mm is an important focal length for you, I'm not sure if you are aware that on a an EOS T3 you have a ...
3 votes

Helios 44-3 mounted on Canon 5D. Did I get the wrong adapter?

This thread on forum.mflenses.com concerns the same issue, and seems to answer the question. Poster SonicScot has the same problem and shows how it is caused by the focus ring extending further than ...
  • 141
3 votes

How can I use a vintage M42 manual prime on an entry Nikon DSLR?

Nikon DSLRs do not play well with M42 lenses, as flange focal distance (46.5 mm) of Nikon F-mount is longer than on the original M42 cameras (45.46 mm). The lens was designed to sit closer to imaging ...
  • 31.1k
3 votes

How can I use a vintage M42 manual prime on an entry Nikon DSLR?

In manual mode I can not select the aperture but only shutter speed and exposure. That's correct. The M42 mount doesn't have any provisions for the lens to interact with the camera in either ...
  • 5,422
2 votes

Got my first vintage lens (Carl Zeiss Jena Pancolar 50mm f/1.8) - what's this lever for?

This isn't a definative answer, but a speculation and something for you to check that's too long for a comment. I'd be surprised if the lever had a visible effect. Try turning the focus and f-stop ...
2 votes

Can I mount my M42 and Sony/Minolta A-mount lenses on a Micro Four Thirds or APS-C mirrorless camera?

It's a good practice to use non-native lenses on MFT cameras due to short flange focal distance of MFT system. But to my mind not all lenses deserve to be used. Some will give a pale ugly picture, but ...
2 votes
Accepted

Can I mount my M42 and Sony/Minolta A-mount lenses on a Micro Four Thirds or APS-C mirrorless camera?

The lenses you have should adapt and work fine. They will be longer lenses (more telephoto) then what you're used to. But your kit lens can probably cover wide angles if you need them. They won't ...
  • 533
2 votes
Accepted

Can I turn on automatically selecting a shutter speed for Sony A350 with M42 lenses? Looking for adapter M42 ↔ Sony A

It appears you are using a "plain" M42 adapter, i.e. a piece of machined metal without any electronic components that enables the M42 lens to screw onto the Sony camera body, e.g. like this ...
2 votes

How do I remove this mounting mechanism?

I can't help you with disassembling that lens but since that lens will focus beyond infinity, I would either buy, or print yourself, a thin M42 to Nikon F adapter. You can buy one like this for ...
  • 11.4k
2 votes
Accepted

Which kinds of lenses can be mounted on or adapted to the Leica M-Mount?

When it comes to adapting lenses with simple ring adapters so that they'll still focus to infinity, the issue is merely one of image-plane to lens mount depth. Because a ring takes up physical space, ...
  • 49.4k
1 vote

Panasonic 4K Photo Mode Low-light perfromance

4K will always miss out compared to a RAW still as there is so much more data that you can recover from RAW. With 4K the camera has already done the majority of processing in camera. However, I have ...
  • 936
1 vote

Using teleconverter to achieve infinity focus with m42 lens on Nikon cameras?

If it's the usual teleconverter (usually 1.4x or 2x) it won't change anything. You can't focus to infinity is because your registration distance is longer that the focus distance. The teleconverter ...
  • 17.2k
1 vote
Accepted

M42 body with split-screen focusing and TTL lightmeter?

A L class Praktica, say MTL5, should meet all the reqirements. They are built like tanks, have reliable metal shutters and TTL metering. The meter tolerates different battery voltages and shutter is ...
  • 5,900
1 vote
Accepted

Are there drawbacks to using a lens adapter?

Are there any significant drawbacks I should take into account before doing this? You must use stop-down metering. You must focus using a lens ring. You must set aperture using a lens ring. You will ...
  • 49.4k

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