Thread replies: 28
Thread images: 15
Thread images: 15
Anonymous
Help identify an unknown camera lens 2017-07-22 06:54:33 Post No. 3118816
[Report] Image search: [Google]
Help identify an unknown camera lens 2017-07-22 06:54:33 Post No. 3118816
[Report] Image search: [Google]
I got these two large camera lenses at a yardsale /p/. One of them was a made in japan kowa 1:1.2/81mm. This other lens looks to be about 81mm as well give or take a bit but it has no labels or manufacturer marks of any kind. It also has a 4 hole flange like the Kowa. I'll post a bunch of pics of the unknown lens hopefully someone will know what it is haha.
>>
that's no lens.
it's a space station.
>>
>>3118869
haha
>>
>>3118816
They're projector lenses, for cinema.
>>
These look like old awful single purpose lenses
Like an x-ray or projection lens
You know the flange distance?
>>
>>3118816
I need it to see OP's sexual organs.
>>
>>3118882
Flange distance?
>>
>>3118889
At what distance from the rear element does the lens produce an image, you can test it holding it above the floor and shooting at a lamp above. Likely very short, ~20mm. Those are x-ray lenses. You can possibly adapt them in your mirrorless if the said distance is long enough
>>
>>3118901
>es the lens produce an image, you can test it holding it above the floor and shooting at a lamp above. Likely very short, ~20mm. Those are x-ray lenses. You can possibly adapt them in your mirrorless if the said distance is
It seems to be somewhere around 30mm give or take
>>
>>3119074
That's good, it can likely be adapted for most mirrorless for insane bokehs. You can place a sheet of paper under it and give it some shadow with a toilet paper roll cut open. Mark the edges of the image circle to the paper when the roof is in focus and measure it so we know what kind of a camera you are going to need for it. For bonus points you can measure the distance of those neat chandoliers, the heigth of the room and distance on projected image to calculate the focal length.
>>
>>3118835
bruh did we really need that many photos
>>
>>3119960
oh shut the fuck up cunt
also: yes
>>
>>3119086
>That's good, it can likely be adapted for most mirrorless for insane bokehs. You can place a sheet of paper under it and give it some shadow with a toilet paper roll cut open. Mark the edges of the image circle to the paper when the roof is in focus and measure it so we know what kind of a camera you are going to need for it. For bonus points you can measure the distance of those neat chandoliers, the heigth of the room and distance on projected image to calculate the focal length.
I'm not sure I fully understand this sorry, can you explain it a bit more in-depth.
>>
>>3120058
Measure real life dimension of something.
Get lens to create focused image on paper
Trace projection of object
Measure projected tracing
Measure distance of lens to object
?????
Focal length
Thread posts: 28
Thread images: 15
Thread images: 15