Yes it will harden at room temperature. Length of time depends on the amount of solvent (zylene) added to the raw Canada balsam. Days rather than hours or weeks. I use stretched rubber bands ( 4, at...
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Yes it will harden at room temperature. Length of time depends on the amount of solvent (zylene) added to the raw Canada balsam. Days rather than hours or weeks. I use stretched rubber bands ( 4, at...
Well it being mounted with flange and brass sleeve on a “1900” period Studio bipost setup suggests it could be pre WHS era Petzval or made in the 1860’s/70’s by the French maker who didn’t fall for...
There is a good deal of “Rule Britannia” attitude in this rather tendentious British Council extract! Chance Bros were important before the 1890’s, but couldn’t match the innovations of Germany...
Refractive index perhaps?
I have used UV glue once - horrible to handle, Need to get a perfect match first try in alignment, expensive, even in freezer shelf life is short (months). I like to keep the lens as original as...
Well, one of sites says “balsam dissolved in zylol” and I use zylol to reduce viscosity when the bottle has been in store for a year or so.
I place the in a standard domestic oven at 60 deg C for a...
Zylene/Zylol is the standard solvent for softening the balsam layer. You just need to cover the lens with liquid. Can take up to two weeks. It is not a heathy solvent - but evaporates less than, for...
There are plenty of threads here which cover balsam renewal.
“….separating the lens with heat….” Doesn’t sound like a suitable method with irreplaceable Antique lenses!
Originally, pitch was only...
There is a good description of Lu Pa - Udine here at
https://www.largeformatphotography.info/forum/showthread.php?101660-Anybody-knows-about-Lu-Pa-Udine-camera
With lots of good photos.
Well, perhaps not fitting matching, but perhaps ensuring identity BEFORE use of serial numbers.
In other words - this is the 8th lens made in a batch of 8 (or 10 or 12) made in the workshop of this...
What a super lens - and just the right size for 8x10 without being nervous about coverage!
It is obvious that Busch wanted to try just every feature novel feature that was being launched in Paris....
These are probably original with the travel camera - and in lovely condition! A normal and a wide angle Aplanat - perhaps with same sized mounting flange?
The spread of serial numbers could indicate...
These are the two Series tables for the Series VIII in the Prochnow volume 3.
He has done his usual conversion to “French” metric measures.
All three Pages are screen shots of a single advert from 1868.
Found when I was doing a Google search for “Alexis Millet”!
...
Not sure if there have been previous links to this advert section of a publication or if the link is dead - but here is the key to A,B etc markings.
More likely originated at Otto Schott who was best buddies with Carl Zeiss at Jena.
Sorry, but I am i Spain for the last 2 weeks of January - as usual. Which means I have only recourse to my memory, rather than the printed Word.
Nothing in the focal range you indicate is either...
Hanovia.
There is also a Steinheil series of quartz LF lenses.
Dr. Klaus Schmitt was active here around 2009/10 with this info in his search for a Kalosat!
If the containers get loose in autumn and winter Storms (Bay of biscay, North sea), no amount of desiccant is going to help!
A view of Jutland’s coast this December.
But usually it is a Secure...
And we have another extra rapid Petzval Series II from the first decade of the 20th Century. This time the longest version no.1.
This has 4” lenses and is a genuine 8x10” Petzval!
This is a Spanish...
I don’t think this conversion is correct. I enclose the Hypergon page from a Swedish Catalogue 1910/11.
The 000 cost 108 kr. In the same catalogue, The 180mm standard Heliar cost 144 kr.
The last...
Yes, I added it to the register just after it was listed!
I was interested but:
I am trying not to buy outside the EU, as EBay listings involve Pitney Bowes - who refuse to accept the existence...
And the barrel is also back-to-front! Or, front and rear cells have been reversed after cleaning! I have made several purchases on auctions where this misplacement gives the lens an odd appearance...
yes, I have had this for a number of years. It is - by no means - the most reliable of the Series! It certainly doesn’t address the large number of Clone lenses without brass engravings in the period...
I am sure that Jamin and his usual brass workshop did the work.
I have 2 identical 1/4 plate lenses. One with the engraving and one without. All the parts (that are still there!) screws, threads,...
I think this thread deserves a good deal more mileage!
There is no doubt that Jamin was the idea man behind the ideas of a central +ve lens, central aperture stops, conic and can rear sections, and...
The 10x12” was the commonest size from the Indian makers.
Read this earlier thread about them!
https://www.largeformatphotography.info/forum/showthread.php?96646-Vageeswari-in-India
I have some real news for you!
Brooker of Eastbourne is identified!
The address 86 Royal Parade, Eastbourne is probably his private address around 1890- 1920. The building still exists.
Brooker...
Your responder has got it right! The back with the ground glass and the plate holders are matched to ensure the determined focusing distance will be duplicated when the plate holder is inserted. The...
Doesn’t fit any Uk,USA, European or Japanese Cameras I know. But it does look an awful lot like the Vageeswari - especially the double brass fitments on the lens board and rather special circular...
This is probably from the early 20th century. The parallel cut lines provide friction to retain the plain tube with the optics. These projectors were typically sold with up to three different focal...
I have to remind Mark that Dallmeyer’s introduction of his patent rearranged Petzval rear cell was around 1867. From his establishment in 1860 to 1867, he produced Petzvals which were identical with...
The idea that every “anon.” Petzval sold in London must be a product of Ross or Dallmeyer is completely false! I can assure you that every single item that left Dallmeyer’s workshop is accounted for...
In spite of the splendid engraving, there is no evidence that Fallowfield ever made their own cameras or lenses. They existed into the 20th century and started around 1856, so putting a date on this...
Looks like a tailboard “travel” camera from the period 1890 - 1914. Most likely French or German. The top brass fitment on the sliding lens board suggest it is prepared for mono/stereo use with a...
The “7” in the serial number is probably just a “1”!
I was the purchaser of the 1/2 plate Petzval 8334 EBay last week. This was a general antiques/curios lister, who had done some homework and discovered the serial number scratchings on the lens. The...
Any news about the result for these tin types?
He appears to be doing a “Jason L” offering of slow dry plates for the EU countries.
Gosh, Intrepid has certainly moved out of the “dirt cheap” group!
If Intrepid says “most Sinar boards”, it is because the real Sinar Organisation made some non-standard version (for super wide...
I doubt there are any maker’s Marks anywhere!
In the earlier era - pre 1870 - with lots more brass surfaces, there were often good areas to stamp initials, serial Numbers etc. and even the details...