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  1. Re: looking for information about a lens signed BD

    Need photos of the engraving and perhaps there is ink/pencil data on the side of the achromat?

    The “Lentille pour……….” Needs to be photographed too!

    This is the standard text on the Derogy...
  2. Re: Material used to block light - between the fil holder and the back of the camera

    Looks like a (poor quality) velvet tape. This an easily available in various widths, thicknesses, lengths and, of course, colours at haberdashery (for women - Uk English use of the word!) shops....
  3. Re: A question on Buying an Item in UK via e-Bay

    I find book plate holders are the easiest to adapt to modern film. Instead of having to use dedicated film sheaths (which are basically unobtainable in larger sizes), it is possible to place the film...
  4. Re: A question on Buying an Item in UK via e-Bay

    Sorry, just seen this!

    X Ray film made in/for Europe has the 24x30cm size rather than 10x12”.
    How usable this is, is dependent on what type of plate/film holders you have.

    Have just done an...
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    Re: Dating Derogy lens

    A serial number of 16,775 suggests it was made in the early 1870’s. By 1902, Derogy was up to around 30,000! Derogy was not good about writing production dates on lenses. I suggest it was written...
  6. Re: A question on Buying an Item in UK via e-Bay

    Just as expected, the Northern Ireland (unsolvable) customs border to Eire (EU) has become an organised intermediate station for parcels from the UK to the EU. No import VAT to pay on my last 2...
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    Re: Restoring a tailboard e bay find

    The amazing condition of many of these “reisekameras” is surprising. I have a more common 18x24cm which, apart from a few marks on the underside, is best described as NOS rather “mint”.Middle class...
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    Re: Restoring a tailboard e bay find

    Yes - I have seen both videos now!

    Having seen your skills with lamination, I am surprised you didn’t go for making film/plate holders that utilized the existing back. My argument is the...
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    Re: Restoring a tailboard e bay find

    The most interesting item in the SA advert is the bottom right “combined iris lens clamp/shutter”. This is something I have never heard of before. It must have been quite an engineering feat,...
  10. Re: Barn door Shutters: what Do I Need To Know?

    This is one version I haven’t seen before!

    The big maker of 1 and 2 door barn shutters was Guerry of France. There were mostly mounted on the lens hoods of Studio Petzvals rather than behind the...
  11. Re: UK lens makers and budget lenses questions

    I see that your Lancaster is from 1902, when they had begun their decline from the glorious 1890’s! It is also just contemporaneous with the introduction of more reliable shutters - although their ...
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    Re: Dating Derogy lens

    Some further special Derogy lenses.

    1. Late pillbox style with a third glass in the rear achromat. Not registered in Pont et Princelle. Serial number 22440.

    2. Derogy’s simplified version of...
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    Re: Front element chip: How bad is this?

    You haven’t mentioned the packaging of this lens! I hope you have taken some photographs of it. This kind of damage can only be caused by a very solid impact with no cushioning around the lens....
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    Re: Lens Separation Repair

    Someone is telling you fibs.
    Heat transfer would be far too quick, create substantial temperature gradients and result in internal stresses that lead to cracks. Gentle air warming is OK but unlikely...
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    Re: Dating Derogy lens

    I have discovered a Derogy lens series which shouldn’t exist!

    Most of this thread deals with the start of Derogy and the early models. The traditional demise of Derogy is given as just after WW1 -...
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    Re: Plasticca info anyone?

    Some extra information about the Plasticca!
    This thread has the best title, but the other “Plasticca” threads have lots of information too.

    I have just got hold of an example of the Netherlands...
  17. Re: Attempt to turn a 1880’s Studio Camera into a “Flat Pack” version

    Custom bellows have made a very acceptable plain square corner bellows and I have made a missing replacement brass plate for the lens board. This way of introducing (some) movements on the front...
  18. Re: Attempt to turn a 1880’s Studio Camera into a “Flat Pack” version

    The “flat pack” adaption must wait a few weeks but...
    I have identified the maker from the ivory/ivorine label. Thanks to earlyphotograpy/makers.
    The maker is Houghton using the brand name ENSIGN....
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    Re: How do I remove mold on LF lens

    Need photos to make a diagnosis!
    Coated or uncoated?
    A edge ring effect sounds more like cement degradation rather than fungus.
    Where you live is important to finding help!
  20. A simple and ancient way to facilitate central stops on projection lenses

    This is not something I have done myself, but have discovered in an 1850’s lens I am preparing for sale.
    Before the almost universal adoption of Waterhouse stops around 1860, there were two methods...
  21. Re: Are Andrew Ross engraving calligraphic styles inconsistent?

    Here is an example of preventing light leaks between the barrel and the steel track.
    An English sliding box lens from Horne & Thornthwaite ca. 1851. This is a sort of tar soaked linen tape which...
  22. Re: Are Andrew Ross engraving calligraphic styles inconsistent?

    Most makers used some kind of semi-permanent mastic/putty. Perhaps it fell away during the significant work done on the barrel.
    Some makers (both English and French) used black paper tape - the same...
  23. Re: Are Andrew Ross engraving calligraphic styles inconsistent?

    Ross must have used at least a couple of engravers in the workshop (generations, illness etc.) and there must have been a slight difference in fine details made from individual to individual.
    This...
  24. Re: Are Andrew Ross engraving calligraphic styles inconsistent?

    I havn’t read everything closely yet..
    BUT Ross used the Old fashioned fs to represent ss until a serial number that is much higher than yours! Fs was also used on pre 1839 telescopes/brass...
  25. Re: Anthony’s Patent Plate Holder - why was it not continued?

    Yes indeed - and they were called Zephyr holders
  26. Re: Anthony’s Patent Plate Holder - why was it not continued?

    The two 8x10 Athens plate holders are in really good condition. I can’t tell whether it is because of the design’s qualities or that they just haven’t been used much. There is certainly little wear...
  27. Anthony’s Patent Plate Holder - why was it not continued?

    In a rather round-about way, I have come to own a couple of these very different plate holders from the 1880’s. It seems to me like a really genius idea/patent. Why did they not become an industry...
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    Re: Some Soft Focus Lens Sales Information

    I have seen a Plasticca sold with nicely made large Imagon type insert stops. This would slow it down as well as retaining some of the aberrations. I did some experiments (cardboard) with a 600mm...
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    Re: Some Soft Focus Lens Sales Information

    I have the impression that both supply and demand are down.

    I think most people interested in portraits/pictorialism are well stocked up on a wide range of suitable lenses and there are not waves...
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    Re: What is the "object" in this lens?

    Maltfalc!

    Of course, it’s not separation. Separation means the existence of two or more distinct parts or approaches to separation when there is reduced bonding between two glass surfaces.

    For...
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    Re: Dating Derogy lens

    This is not a problem - actually, it is quite surprising that so many DO have the markings after so many years!
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    Re: What is the "object" in this lens?

    The two commercial threads appear after 4 weeks membership!

    I would not describe this as separation. It is a bit like a snowflake developing in clouds. The balsam/glue is sort of “crystallizing”...
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    Re: older type of Sinar Norma (DB) Shutter?

    I have absolutely no idea! Sorry.
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    Re: Lerebours Serial Number - Rice Writing

    Your rediscovery certainly brought about a stream of information about Lerebours which has been found useful by a lot of old/new Lerebours owners.

    We still don’t know when the redesign of the...
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    Re: Lerebours Serial Number - Rice Writing

    Well my 2113 is a couple of years older than yours - but it is exactly the same lens I have discovered this morning!
    Just under 13cm in length.

    I have just measured the illuminated circle to 16cm...
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    Re: Lerebours Serial Number - Rice Writing

    Yes, it is 1847/48.
    This is the earliest data I have (1853).
    Looks like the focal length should be about 18cm.
    Something between lens 352 and 353?
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    Re: Lerebours Serial Number - Rice Writing

    I couldn’t locate that Lerebours, so here is a Hermagis which is almost identical. It is no surprise that the flat washers get lost. They must have exactly the same diameter as the narrow bottom of...
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    Re: Lerebours Serial Number - Rice Writing

    It’s posting # 63. As I posted the skeleton serial list, I’m the person has to do the up dates. I usually don’t bother to mention the individual additions to keep the thread concise. I add ebay...
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    Does this lens deserve a Green Card?

    There some things about this Petzval that just didn’t look right.

    First of all, it was the colour of the brass. I would have sworn that the auctioneer had messed up the photos, but the brass...
  40. Re: Brexit trade (custom) treaty - and Global Shipping Program (for EU trades)

    I can describe what has happened with “case study 2”. The parcel was sent with absolutely no data as to contents and value (from a well know auction house!). I had even emailed that they should give...
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