Handa made RAF Biogon 38mm unit

[stonemute]

Hi all,

I made a lens unit of Biogon 38mm f4.5 from a R.A.F.(Royal Air Force) aero lens.

Lens unit I bought from eBay.


Remove the lens by using a lathe.


Design the adapter with a 3-D CAD.



Finished part of the adapter.



Then, the lens unit was completed.


Was required very, very advanced design capabilities and machining accuracy.

 

[brucemuir]

Impressive.
Let us know how it shoots.

 

[Richard S. (rich815)]

Very nice. Pls share some results later.

 

[stonemute]

> bruce muir
Now, I'm making a 6x7 camera.

 

[stonemute]

> Richard S.
Thanks.
I will post some results about one month later, because I'm making a camera.

 

[bushpig]

> bruce muir
Now, I'm making a 6x7 camera.


View attachment 48972

That's fantastic! I can't wait to see more!

 

[Trask]

I greatly admire your obvious skill. What beautiful work.

 

[smiling gecko]

that's an amazing bit of creation you have made! it is science expressed as an art.

my skill level is dremel tool dabbling/vise grip clamping/taking "it" to a skilled repair person to undue my "doing".

now, if you could conjure up with a visoflex for a mamiya6...ooh, those longer RB67 lenses.

good luck and good hunting.

breathe, relax and enjoy.
smiling gecko, aka kenneth
www.neverforgetbeslan.org

 

[keithwms]

Great work, I also look forward to seeing results!

What was the net cost of this lens, for you to make it?

 

[steven_e007]

This I like... it inspires me to go and tidy up the junk in my garage and get to work on finishing one of my many, many (MANY) uncompleted projects.

I think it will have to be the wide angle 91/2" square camera with the 6" Ross lens, first

 

[Argenticien]

stonemute, that is indeed impressive! Have you tested the image circle of the lens to determine whether it could cover film formats larger than 6 cm x 7 cm? (Apologies if this is an ignorant question. Maybe the answer is already obvious to readers who shoot large format, but I am not among them!)
--Dave

 

[keithwms]

Sounds like there are already people here who'd like to place orders! This is great.

I'd like something in a ~210-300 mm focal length that covers 5x7 and is f/2.8, please

 

[stonemute]

That's fantastic! I can't wait to see more!

Thanks! I can't wait too, but I need many time to make a camera.

 

[stonemute]

> Trask
> smiling gecko
Many thanks!

 

[stonemute]

Great work, I also look forward to seeing results!

What was the net cost of this lens, for you to make it?

The net cost of adapter is $190(including nitride & anodized),
biogon is $320(including shipping cost to Japan).
Not included my manpower.

 

[stonemute]

> (there was a url link here which no longer exists)
6" Ross lens!
I want to make a camera with Ross too!
I cannot wait completion of your project.

 

[stonemute]

stonemute, that is indeed impressive! Have you tested the image circle of the lens to determine whether it could cover film formats larger than 6 cm x 7 cm?

The image circle is 84mm.
It is just covered 6x7, impossible to take 6x8, impossible to rise.

 

[stonemute]

I'd like something in a ~210-300 mm focal length that covers 5x7 and is f/2.8, please

My next project is mid range focal length rangefinder camera.

 

[keithwms]

To compete with the mamiya 7 w/ 210mm lens, please! I don't mind scale focusing....