Lens adaptors for 1958 Japanese 300mm F2.8 thread mount telephoto lens to be attached to my Sony A7R4? In 1983 I purchased a used Tokyo Kogaku R. Topcor, 300 mm, F2.8, manual focus...

Shooter41 Loc: Wichita, KS

In 1983 I purchased a used Tokyo Kogaku R. Topcor, 300 mm, F2.8, manual focus telephoto lens that first appeared in America in 1958 and was discontinued in 1961. I would like to find out if currently any manufacturer makes a lens converter that would allow me to hang my Sony A7R4 mirrorless, digital camera on the back end of the lens to shoot outdoor soccer. I want to take advantage of the excellent prime lens and record digital images that I can edit in Photoshop and compare my results to modern 300mm lenses. Does anyone on UHH know if such a converter exists and the best place to buy one new or used? (I realize that all of the bells and whistles that my Sony A7R4 has with Sony lenses will not work on the old manual lens, but the Sony 300mm, prime telephoto lens is more than I can afford and I already own the old Topcor lens. Thank you for taking the time to share your knowledge. Shooter41

Alafoto Loc: Montgomery, AL

Good luck in your quest. Hope you find something. By the way, is the lens mount for an M-42 camera, or is it threaded for a T-mount perhaps. I have a T-mount adapter for EOS. Used it on a telescope.

Just found this: https://www.google.com/search?q=tmount+adapter+for+Sony&rlz=1C1CHBD_enUS1028US1029&oq=tmount+adapter+for+Sony&aqs=chrome..69i57.30455j0j7&sourceid=chrome&ie=UTF-8

If the lens is threaded for T-mount, which was very popular in the 50s and 60s, You may very well strike gold.

ORpilot Loc: Prineville, Or

Just guessing here, But it is probably one of 3 standard screw mounts of the day, T-mount, M-42 or M-39 . These are cheep on eBay around $10. I have one of each I got off of eBay and use it on old lenses that I have. The work just like the did on the old film cameras. Manual focus, and Manual aperture setting. They work just fine on my Sony a7, a9 and A1 cameras. Happy hunting.

zug55 Loc: Naivasha, Kenya, and Austin, Texas

Just google the lens you have to find out what mount it uses. I have some old screw mount lenses that turned out to be M-42. It is easy to find an adapter for Sony e-mount for little money. My M-42 to Sony FE adapter works great, and it was only $10 or $20.

Orphoto Loc: Oregon

Once you find the appropriate mount adapter, best of luck shooting soccer maual focus and hoping for a success rate comparable to recent autofocus glass.

Shooter41 Loc: Wichita, KS

Alafoto wrote:

Good luck in your quest. Hope you find something. ... (show quote)

Dear Alafoto...Thanks for taking the time to reply. My old lens does have a T-mount and I just ordered one from Amazon for $10.31. Shooter41

Shooter41 Loc: Wichita, KS

ORpilot wrote:

Just guessing here, But it is probably one of 3 standard screw mounts of the day, T-mount, M-42 or M-39 . These are cheep on eBay around $10. I have one of each I got off of eBay and use it on old lenses that I have. The work just like the did on the old film cameras. Manual focus, and Manual aperture setting. They work just fine on my Sony a7, a9 and A1 cameras. Happy hunting.

Dear ORpilot...It does have a T-mount and I just bought one from Amazon for $10.31. Thanks for taking the time to share. Shooter41

Shooter41 Loc: Wichita, KS

zug55 wrote:

Just google the lens you have to find out what mount it uses. I have some old screw mount lenses that turned out to be M-42. It is easy to find an adapter for Sony e-mount for little money. My M-42 to Sony FE adapter works great, and it was only $10 or $20.

Dear zug55...My old 1958 lens uses a T-mount converter which I just bought on Amazon for $10.31. Thanks for taking the time to help me. Shooter41

Shooter41 Loc: Wichita, KS

Orphoto wrote:

Once you find the appropriate mount adapter, best of luck shooting soccer maual focus and hoping for a success rate comparable to recent autofocus glass.

Dear Orphoto...You're correct. I am sure that my success rate will be far less due to the heavier weight and manual focus of the old lens rather than with my modern lighter 70-200mm zoom, auto focusing, eye focusing, Sony lens, etc. But the ability to get digital files instantly rather than shooting with film and getting negatives and prints while saving a couple of grand makes me want to try using a higher F stop, creating a wider depth of field and seeing what happens. Thanks for sharing. Shooter41

ORpilot Loc: Prineville, Or

Shooter41 wrote:

Dear Orphoto...You're correct. I am sure that my s... (show quote)

All it takes is practice, and practice, and more practice. I shot aim of my high schools sports when I was a student and I got pretty good at pan and high shutter speed shooting. Those were the days of, you wanted to make sure all your lenses focused the same direction....to infinity clockwise or counter clockwise otherwise your brain and hands would go the wrong direction. But you know....I did pretty good without AF. I still do OK with some of my old manual focus lenses. Good luck

Alafoto Loc: Montgomery, AL

Shooter41 wrote:

Dear Alafoto...Thanks for taking the time to reply. My old lens does have a T-mount and I just ordered one from Amazon for $10.31. Shooter41

You're welcome. Glad you can use the lens. Post some pics. I've shot a lot of football back in the day with manual focus Nikons. You'll do fine with a little practice.

jerryc41 Loc: Catskill Mts of NY

Alafoto wrote:

Good luck in your quest. Hope you find something. ... (show quote)

T-mount lenses were a great idea. I could use a zoom lens on my Nikon or Miranda. I still have that zoom from the 1970s. It's so much larger and heavier than modern zooms.

Shooter41 Loc: Wichita, KS

jerryc41 wrote:

T-mount lenses were a great idea. I could use a zoom lens on my Nikon or Miranda. I still have that zoom from the 1970s. It's so much larger and heavier than modern zooms.

Dear jerryc41...I discovered that my 1958 Japenese lens uses a T-mount and I ordered one from Amazon for $10.31. I will stop the lens down to get a wider depth of field to help me focus and hang my Sony A7R4 on the back end and create some digital images that I can edit in Photoshop and go to school. (If I have any success, I will post on UHH.)
Thank you for taking the time to comment. Shooter41

Morry Loc: Palm Springs, CA

Shooter41 wrote:

Dear ORpilot...It does have a T-mount and I just bought one from Amazon for $10.31. Thanks for taking the time to share. Shooter41

How does one "correctly identify" a T-mount, M-42 or a M-39?

Architect1776 Loc: In my mind

ORpilot wrote:

Just guessing here, But it is probably one of 3 standard screw mounts of the day, T-mount, M-42 or M-39 . These are cheep on eBay around $10. I have one of each I got off of eBay and use it on old lenses that I have. The work just like the did on the old film cameras. Manual focus, and Manual aperture setting. They work just fine on my Sony a7, a9 and A1 cameras. Happy hunting.