Search:

Thanks for the responses.

I looked at Chris McCaw's work years ago, the links from the search engine were still purple ;). Although the goal is somewhat similar, the technique is very different.
...

Good day,
I'm on vacation for the next few weeks and I can finally finish a few projects. Normally I'm a big fan of the trail and error mentality, but unfortunately this experiment takes too long...

It seems to me indeed a lens to restore, only that hole in the barrel is a pity. Other than that, I completely agree with Steven.
Another option is to have a new shaft made, only with waterhouse...

Sorry for the necroposting, but this information doesn't seem right to me and I want to warn future readers.
I was looking for an extremely cheap wide-angle lens for a 30x40cm (12x15") DIY box...

Well done! It really has that antique airplane look, especially with those rivets. Were you able to saw those first parts at an angle or did you sand them?
I didn't know there were such large...

At first I thought that what turned out to be the lens hood would be one of the first types of iris/diaphragms. I once saw an old lens that had that, it also had a kind of bulge in the lens shaft...

Good day,

I bought an 'ED. Liesegang Düsseldorf Tachyscop 23' at an auction last weekend (Back focus length aprox: 34cm, F5.6). It was a bit of a gamble as it didn't seem to be that neat and the...

Good day,
Coincidentally, I experienced the same problem with Rodinal this past weekend, just in a slightly different situation. I had assumed this was the structure of the paper, but now that I see...

Good day,

When I see this I also think it is the sagging of the bellows for the following reasons:
-The shadow has quite a bit of definition without being really sharp, so the distance from the...

When I google it I see some pictures from a site called akademiamomentum. That seems to me to be a relatively standard Rectilinear (F8?) lens from about 1880 to 1910. What strikes me about this lens...

Thanks for the information, this sounds quite logical indeed. I had already assumed that the front element was not officially part of it and that it was more the result of tinkering, as Nodda Duma...

I received a Voigtlander Heliar today that most likely comes from a Bessa 66. To be precise, it is a Heliar 7.5cm F3.5 in a Compur shutter. So far nothing special, but when I wanted to unscrew the...

I have also tried a grow tent before but also had a lot of problems with light leaks and poor quality. They can work well for a fixed installation, but they are too fragile for use in the field. That...

Maybe it's a bit obvious, but I haven't seen it come up in this thread yet. As a reasonable way to recognize older wide angle lenses, I often look at the shape. If the lens is flat and wide, there is...

You might also be able to check with one of the last negatives if they stay, in place during inversion agitation. That might save you a few wasted negatives.

Wouldn't the bayonet be able to come off if you unscrew the rear element? if that's possible of course.

https://live.staticflickr.com/65535/51429288662_6d970bb413_h.jpgLandschaftspark Duisburg-Nord 4 by Rolf Koster, on Flickr...

Hello,

My name is RoLF Koster and unlike most introduction posts I am not new to LF land, so here's a short introduction.

I am a 32 year old dutch man who works as an electrical engineer. In...