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It is all very depressing!

In the “Good Old Days” a lot of items I bought from North America passed through the Danish Post Office with no demand for the Import VAT. Then the idea of an...

I am a bit surprised at the confusion!

Everything imported into the EU above a nominal value incurs:

1. The national VAT tax ( for Denmark, this is 25% of the total value - including transport...

I have always found friendliness and good service from “le reve edition”. I must have received the “very last!!” Jamin/Darlot between Xmas and the New Year. At least, until there are more!
It is not...

I have a number of Jamin and Jamin/Darlot small size CdeV petzval lenses. The earliest of these is from around 1857 - with the very simple block letters JAMIN PARIS engraving and with no mention of...

Here is the latest take on Vienna/Braunschweig addition/final move from D’Agostini.

You might want to remove the footnote ads before the Mods discover them!

Will be adding some new info/photos during the next few hours - a lot to source but will just add on to this skeleton reply gradually. As this is most comprehensive thread on Jamin/Darlot innovations...

Well, my Christmas present arrived AFTER Christmas.
Jamin/Darlot edition. It doesn’t appear to clear up some of the confusion about the range and variations around 1855-1858 but contributes some...

The sheet metals I have access to have been either zink or electroplate (galvanised!) steel. Bending over a straight edge to the 90˚ position, then with as much Care as possible, Down to 180˚ with a...

Nice to see you back here Emil - we have been worried!

I hope your hardware collection has found homes which appreciate them and use them - although, unfortunately not to artistic
Levels you...

Yes, I have made Them from a range of sheet metals. Allow for more clearance than you calculate/Measure.
Sheaths are not necessary with book-type plate holders - in fact, they are a hinderance in...

My impression is that supply is still low, but demand is slowly going up!

Kodak 405mm. Very, very clean on Swedish Corona adapted web auction. Equivalent to 1,214 usd.

There is really very little separation with air spacing development when Canada balsam begins to break down. There are some some small areas close to the edge but by then there is an opaque sandwich...

No, but Beck is suspected as having had a relationship with perhaps Steinheil or/and Busch so this is probably one of the many “planat” series aus Deutschland! Beck was really a microscope company...

Yes - for modern UV synthetic glues where there are very small distances between the hard glue surface/air space/lens surface.

NO - for Canada Balsam separation. The balsam never becomes a...

Methylene Chloride (Old fashioned paint remover) is a very nasty item(for the user) and is no longer available in most parts of the world. And the inclusion of ammonia reminds me that I have lost two...

http://piercevaubel.com/cam/misc/serocoview.htm

There are CCHarrison threads in the lens section. Post camera photos in the camera section - but lens details and photo in the lens section.
Use...

No entrance through the rear!
See photos.
The front and middle lens are screwed together in one unit which is released by the thread of the “hood”.
Note my early 36cm has a much more substantial...

This has the standard layout of the booklets I have - the Hermagis one has a more simple layout with no complex photo montages of different versions/sizes etc.
Actually, the left- hand page shows...

Schneideritis.

See


https://www.largeformatphotography.info/forum/showthread.php?152105-What-is-quot-Schneideritis-quot-or-What-are-those-white-specks-in-my-lens

You might want to check out Jakub’s example here.

https://www.largeformatphotography.info/forum/showthread.php?157089-FS-Hugo-Meyer-400mm-f3-petzval-lens

Hugo Meyer sold quite a lot of these...

https://www.largeformatphotography.info/forum/showthread.php?154350-Any-information-on-the-Holterman-and-Bayliss-Plates-Lens-that-was-used

And
...

it is unlikely you will get an answer as these look pretty anonymous (late 19th/early 20th C.). Photos of details, rather than total lens, might help. The camera is a tailboard type with some...

This has already been noted on the literature - mostly in the 19th Century - in Trail Taylor’s collected articles. Grubb is reported as being annoyed, but didn’t get involved in the...

Good!
I have the impression that the original print of 100 numbered copies of each booklet has been added too! Only one of booklets I have has a number alongside the “ /100”!

The Darlot guide was sold put some years ago, but may have been reprinted since. Last time I bought one, I think I wrote through the website mail system requesting confirmation of availability. I...

The first photo shows a selection of Derogy’s aplanats. The two on the left show the two versions of size no. 4. The top one - with lens in the lens hood assembly - is the early one. The second photo...

I have the no. 7 - serial no. Is 18661.

Unfortunately, the front lens cell is part of the (very robust) lens hood assembly. Derogy sold lots and lots of these aplanats, so perhaps a design change...

I was just guessing it was the same Kranz I bid on - there are very few this big around!

Yes this is not a difficult service of the achromat - it will as good as new.The photos on the other...

Painting the Ground glass len’s edges Black was very much a UK habit in the 19th Century! Traditional French and most German makers didn’t consider it important and wrote lots of Strange Numbers and...

I have some concerns about the publishing of these comprehensive booklets on French lens makers in the 19th century. The website seems to be
unchanged for some time and the “booklets under...

There is a side view of the achromat in another of the OP’s threads about his current challenges. This shows “beads” of leaking balsam which are showing the typical white deposit from drying out...

Agreed. I am surprised Kranz used this system. Damage always happens when amateurs like us try to raise the edge, especially when this is the third time it has been done (for rebalsaming every 75...

Hello guys, I just bought this beautiful Voigtländer Petzval at an auction. Maybe it´s a 3B because the diameter is 2 inches.

But there´s a problem... The "magnifying" rear element is missing. I...

I bid for this very large Kranz Petzval too! But under 1/4 of the winning bid.
It was described as having heavy separation, but no image of the glass itself!
The auctioneer is notorious for a very...

Many People have done it ( mounting the copal sinar shutter behold the front standard )!

I have a tailboard 18x24 cm camera which I modified to Mount the copal shutter between the bellows and the...

Very Nice design.
The only problem I can see is that the clearance between the Iris clamp and the shutter opening is very limited, meaning that you can only Mount lenses which have the male flange...

Sometimes the balsam has leaked into the tiny air clearance in the brass cell so the glass is stuck. Placing the complete cell into a sealable container with xylol will loosen the lens.

Look for...

It is right because of having coverage for 8x10 - whilst the 300mm Heliar was designed for 16x21cm - close to full plate size. This applies to both the original Heliar design and the later Dynar...

The “right” Heliar for 8x10” is the 360mm.

The Sinar shutter is super for barrel lenses. But best on a Period Sinar system or one of the few modern camera Systems designed to accept the genial...

Sometimes rack and pinion portrait lenses have been “fixed” by the boss in the portrait studios so that the staff use the rear adjustment available on the studio camera for fine focus adjustment....