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    Re: CHAS A. GUMP brass Lens?

    We don’t refer to current eBay listings.
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    Re: Rack and pinion for 20x24

    Many continental large format cameras used a central long ACME thread with an attractive end brass turn handle and a fixed threaded brass block at the base of the rear standard. Obviously, both sides...
  3. Re: Anybody recognize this lens "Photo-Hall Paris"?

    Of course!

    Photo Hall was a large Parisian Retailer, who also had his own branded versions of camera sets, lenses etc!

    Their products are very common on eBay.fr.
    I have their comprehensive...
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    Re: Houghton Butcher 'The Victo'

    Depends on the size of the camera!

    This model had the usual (GB) range of sizes from 1/4 plate up to 12x10”. This means there are no 4x5” or 5x7” versions.

    Lots of data in usual search - for...
  5. Re: How did they blacken the metal stops & caps of the Daguerre era lenses?

    There are two previous threads on the permanent blackening of brass!
    Here is my contribution on a previous occasion!

    Yes it is ordinary sheet brass.
    Ordinary small Metric screws.
    Thread cut in...
  6. Re: Universal Heliar 30CM Flange specifications

    It is the same optical design - other Heliars became Dynars.
    Mine is from the first batch, that didn’t yet have the “Universal” engraving. Serial number 251345.
  7. Re: Universal Heliar 30CM Flange specifications

    It may depend on the date of production.
    My early 30cm Universal flange is definitely a 90 mm, but is not the common 1mm variant (like the Compound shutter V flange).It is more like a 1.5mm thread...
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    Re: Facebook Group on 19th Century Lenses

    I am not - and never will be a FB person.

    There is a something about the place that is “off”!
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    Re: Plasticca 450mm F3.5 dimensions

    Just for the sake of comparison, here are the corresponding data for the tiny 200mm Plasticca!

    Focal length 200cm.
    Max aperture 40mm /F4.5 (engraved)

    Realistic max. Aperture is F5 - and, of...
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    Re: Using a soft focus brass lens

    good examples.
    You just missed the curved focal plane of Petzval in the double portrait - but it still makes for a very interesting shot. Quite timeless- could be 1952!
    The single portrait is...
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    Re: shutters compatible with 7" Dagor?

    C.P.Goerz.

    In the good old days, there was a lot of joint production of shutters for camera makers and lens makers. Things became a little tense with the disappearing market of the 1920’s!
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    Re: Using a soft focus brass lens

    taking a break from painting windows, I have done a quick search for cervees.
    It is a short period product from the New York lens company. Who were also a short lived company, I seem to remember....
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    Re: Using a soft focus brass lens

    There is no universal aperture system!

    US stands for Uniform system. But there were LOTS of different scales at the same time - see here.
    ...
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    Re: Using a soft focus brass lens

    Probably!

    The Dallmeyer redesign of the two lenses in the rear cell of the standard Petzval Portrait lens was extensively copied from the late 19th Century - the Golden Age of Studio Portraiture!...
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    Re: Restoring a tailboard e bay find

    Any news - it appears you may be distracted by other interests!
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    Re: Information for Koristka Milano Lens

    There is far more info here!

    https://www.largeformatphotography.info/forum/showthread.php?140369-Koristka-ARS-Catalogue-Details-of-all-models-quot

    It is to be compared with other “non...
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    Re: Lerebours Serial Number - Rice Writing

    I didn’t see these (holiday activities!)!
    When listing is an auction and the lister doesn’t know what he/she is selling - then interest is huge for L et S!
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    Re: Show off your ULF camera

    Surely this is a 24x30cm camera?
  19. Re: help identifying a camera and repair suggestion

    Agreed!

    This is a very simplified (and elegant!) 9x12cm camera. Much more useful than the far more common Goerz ANGO with a defunct curtain shutter. Film is still available from the EU!
  20. Re: 'Journey' in trying to build a 1850 sliding box camera

    The main problem is that there are more “new production” sliding box cameras around than there are originals! So, the range of woods may represent quite a few of cameras added since the mid-1800’s. I...
  21. Re: 'Journey' in trying to build a 1850 sliding box camera

    genuine shellac - dissolved, or as dry flakes - does have a light straw to orange colour. I think the “transparent” means translucent rather than colourless!

    Lots of “grey finish” teak garden...
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    Re: Lerebours Serial Number - Rice Writing

    I am not a person who holds back from giving my opinion and etc. - so I have contacted the present lister of this lens. At first, he/she seemed completely in ignorance of any past history of this...
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    Re: Lerebours Serial Number - Rice Writing

    Well done for posting this info and alert!
    Apart from the non-focusing, I assume the absence of scratched lens serial numbers, gave you a solid argument for a refund!

    The 81mm diameter lenses are...
  24. Re: Universal Heliar - Soft focus mechanism servicing

    Very good suggestions. I know “milling”sounds beyond the average DIY enthusiast, but drilling out is a lot more amateur friendly. There is nothing odious in cutting a slightly larger thread!
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    Re: Portrait Euryscop Series III N°4A

    ………..as seen from in front of the front lens!
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    Re: Portrait Euryscop Series III N°4A

    Yes, it does Sound right!

    It is quite normal that the longer focal lengths do not quite met the formal speed give to a Series.
    For instance, the size 8A - focal length 25”, front lens diameter 5”...
  27. Re: looking for information about a lens signed BD

    OK, this makes it a Little clearer!

    This definitely NOT a commercially made lens - even though it has been professionally put together. The engraving is very well done - it is almost too perfect...
  28. 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...
  29. 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....
  30. 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...
  31. 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...
  33. 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,...
  37. 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...
  38. 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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