Schneider-Kreuznach Componon 1:4/28 (enlarger)

[Phenix jc]

Some tests handheld in natural light, mostly w o (wind, poor light of this autumn-july)
A beauty, IMO
The lens is just taped on a Nikon's K1
(it has no rear thread, but a front thread)
(zero pp)


(the lens is w o here)




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(100%)



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(Those were done quickly ; A better photographer will have better results)

[pdccameras]

You're way too modest! These images are wonderful.

This is a very sharp lens. What aperture did use?

Was this a broken lens? You say it has no rear threads. All my Componon's have leica thread mounts on the back.

P.

[walter g]

Some also had M25 threads. Are you sure there isn't a retaining ring covering the threads? That's what mine had.

[Minolfan]

It is hardly to believe that the lens has no rearthread as that is what you need to mount it on an enlarger. The thread can be M39 or a small M25 on a Scheider lens. So there is reason to search the backside another time!

[walter g]

Sorry I typed to fast. Should of been M25 not M35. I edited the post to correct it.

The style retaining ring mine has completly covers the threads, it has 2 notches in it for removal.

[poilu]

impressive macros, great results with this 28mm !
how do you make precise focus with the Nex, you just keep it handled or do you use some support ?

[IAZA]

I like these, beautiful

[pdccameras]

[Phenix jc]

To all : Thx

To all : Ok guys, I'll remove the tape, and I'll photograph the lens so that you can understand better ;
The rear of the lens is a totally flat plate, the thread on the other side , the front side of the lens ;
So I imagine that we can reach the head of a specific enlarger and that you have to screw the lens through a bored plate of a hole in the medium, the lens toward the photographic paper.
(Sorry, but my english is at his maximum, actually )
A picture will do the job better

To pdccameras : All the enlarger's lenses are sharp
Aperture : wide open f4, so obviously there isn't enough DOF
I've done many macro shots with (many sort of) flash, but...I want now, to use the natural light characteristics
Here's an example with the lens stopped down in bright sun (at least, at last...) :







100%

To poilu : 100 % handheld. That's THE point, with these light weight solutions ! It's a fix focus lens, so you move backward and frontward.
The firmware update of the Nex is a tremendous help !
Of course you're very close to the subject, and it's not really easy...
BTW You can consider that there is no macro ring here, the lens is inside the K1 (the K1 is narrow) , I just use the Nikon F register

[harry tibi]

I recently bought a 4/28 which has a focusing ring Other end is M39. It was a bargain, really: 20 €. Anyone know something about this model? I test-mounted it on a Nex body cap and it's brilliant, not only at close distances. It now focuses from approx. 2 m to (a little further than) infinity. Just very slight vignetting, which can easily be taken care of with Cornerfix. It should be an enlarging lens, shouldn't it? [img]



[/img]

[walter g]

[kds315*]

Schneider Componons are pretty good enlarger lenses, especially the Apo-Componon HM types

Nice shots you got!