Agfa Colostar U 4.5/100mm in the grass

[Toeteraar]

I have a couple of Agfa lenses that were used in photoprinters some decades ago. They have names like Colorstar or Colostar and different focal lengths and formula's. De aperture ring doesn't have any values on it so it's estimating what value you are using.
The Agfa's do not have any standard mount. To use them, i tried to glue them to M42-extension rings. This succeeded only in one case so far, i guess i have to look for better glue to bond metal to metal

1 The Colostar U 4.5/100mm on my Oly E330


2 Look how many blades


With the Oly i did some shots of the grass and what's between the grass. The stack of extension rings delivered a field of about 5 x 7"
3


4


5


6


7


8


9



Would it work on a NEX ?
10


11

Offcourse it works on a NEX

To put the rest of the Agfa's to use i need to find a kind of glue to fix them to extension rings. It may not be the sharpest lenses but they are certainly fun to play around with.

[Gerris2]

These are beautiful images, I was drooling over the lovely bokeh.

[Attila]

It was worth to try looks very good as expect from Agfa and this technology.

[Yebisu]

Decent results. no.2 and 3 of the grass shots are my favs.

[Nesster]

Looks nice! For a quick fix - if the mount fits inside a tube, is to use some foam or plastic insulating tape and do a friction fit. Quick to do, quick to undo.

Colostar could have been the name for a colonoscopy lens

[kds315*]

Well, I'm not that impressed with the results to be honest, it lacks brilliance and contrast,
at least it seems to be sharp. It looks like it would need a sunshade, but also that one
cannot be mounted as it seems not to have a front filter thread.

[Toeteraar]

[martinsmith99]

Try a contrast boost in PP and perhaps warming the WB a little.

[greg]

Good work!

Keep at your experimentation, just because some lenses cost more than a good used car - it doesn't make them better. Have fun being yourself.

[Orio]

They look good to me.
Differently from other users, Toeteraar did not sharpen his pictures to death. You can say by looking at the curves and high contrast points.
There is nearly no artifacts of sharpening.
Yet, the pictures seem to feature a good fine detail, as it's possible to guess in the dandelion picture.
So overall I would say that the performance is good.
Of course, that is not a lens for outdoors use, the coating is obviously showing that and the contrast is weaker than in an outdoor lens.
But not worse than many pre-war lenses that many users here love and use.