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DETAILS OF TRINOL LENS

  1. I have a Trinol anastigmat 105mm f3.5 lens head [serial number 036668]
    Does anyone have details about this lens including date of manufacture, coating of lens, comparative 'quality of lens' [by review??], etc
    regards
    Tony
     
  2. I've found my own answer - it is coated
    regards
    Tony
     
  3. A coating can be determined by a change of colour of the reflected image of a small lightsource, in contrast to direct view.
     
  4. National Optical Co., Leicester, UK.(NOCO)
    This firm was a daughter factory for TTH of Leicester during the WW2 when there was a need to split production capacity as a precaution against destruction.

    Trinol f3.5 105mm This was a triplet (TRIplet National Optical Ltd) carrying TTH patent details
    which was sold to Stewartry of Glasgow to mount for cameras such as M39x26 and Exakta. It may well have
    been originally a wartime lens design, possible for a 6x6cm dial recording camera, and is of good but not
    outstanding performance. Early versions at Nos 034,94x, 035,04x, 35,05x, 035,32x, 035,62x are not coated,
    later ones have a hard coating at Nos 035,49x and 035,78x- note that there is overlap, possible due to parts
    being in hand when coating started. [It was definitely aimed at Leica sales as the Reid was only demonstrated
    in 1947, and no bodies sold for some time by when Trinol sales were a thing of the past.] Lenses for Exakta
    tend to be late in production, which seems to have stopped rather suddenly. Lensheads carry Pat. No. Brit.
    566,698 and Canadian 435,629/1946. Some lensheads were later sold separately about 1956, and No036,50x
    was noted on a Novoflex bellows for Wrayflex. One problem is that these serial numbers do not seem to fit
    with either the prewar uncoated or the postwar coated cine lenses- ie a separate series was used. (see the f2
    below and the f3.5/50mm cine.)

    TTH-Taylor, Taylor and Hobson, Ltd., Leicester, England.
     
  5. I knew the manufacturer, but still did not understand the lens designation...
    Thank you for helping me out of me being slow on the uptake again.
     
  6. Source: A Lens Collectors Vade Mecum Dead Link Removed