paul hofseth

Joined on Sep 22, 2021

paul hofseth's recent activity

  • I certainly adhere to the vivid colour hypothesis when comparing my old Kodak DCR snaps with current ones, but it is most likiely an effect of Kodaks raw file treatment and possibly not of their ...
  • Good advice. but a few caveats: the adapters need to be quite precise. Skewed, off center and too long adapters will make exact focus impossible. Especially very short focal lenghts and wide ...
  • for portraiting birds, totally good flat field zoom lenses are not needed, A simple two  element achromat  stopped  down to 8 or 11 will do. But good support or very short shutter speeds are ...
  • in princilple an adapter is just a mechanical link and the only thing that can go wrong is if it is too long or shiort, decentered, skewied, has light leaks or weak springs, . Novoflex usually has ...
  • my point about company identity is the same, a merger leads to ownership of trademarks  and even keeping some of the staffl. Mr Bertele was active at Zeiss after he designed the Ernostar and went ...
  • A remark ad industry history; there is no trademark limitation for Zeiss to use Ernemanns nomenclature since they are the same company. Abbes Zeiss foundation merged the Jena and Dresden companies ...
  • i understand that the original question is concerned with focussing on the Nikon Z. The colouring sensitivity can be adjusted, but I find that foci\ussing in the enlarged part is more accurate, ...
  • With any adapter, chip or no chip, Nikons or a cheap Chinese one , the Z7 certainly  does indicate when correct forcus is reached by colouring the sharp elements in the colour you select. But i ...
  • mr. HRX: You can easily fit the Minolta designed Leitz R variety to Nikon since its back focus is much longer. presumably they autovariety and the old manual one has the same optical layout, p.
  • Replied in
    I stand corrected, i find even german grammar a bit too much. But I do maintain that cameras should have few controls that need to be fiddled with when taking pictures.Even numbers and symbols in ...
  • Sirs, as an unreformed "neoluddite contro freak" I like apparati with simple controls, not the unproductive and error prone buttonery of some  recent products. The autofocus (AND peaking features ) ...
  • Furtther to the eulogy posted above, I could add that as a neoluddite-control freak I dislike autofocus, prefer to set the aperture istead of being victim of camera whims (such as buttons or ...
  • Yes, thanks for adding this info. My intention was to indicate that it was not the original leitz company that decided to ditch the Rs, but mr. Schmidrheynis Wild/Kern  consortium (that saved the ...
  • I expect that EF optics will find a home on Canons new mount, so the companmy will compete with its own past. Inspired by the above tales of camera and lens cjhanges: here is a tiringly long ...
  • I briefly used a multicoated Minotla 90 made for the CLE,Good results , But found that the plane rear surface reflected the image mirrored in the sensor stack glasses of my then Olympus PenF, so I ...
  • Replied in Testing
    sir, most thorough and interesting text ad converters.and film v/s digital.  (You might also have mentioned that  In principle any telephoto lens as distinct from a long focus lens has a buiLt in   ...
  • The Z has no mechanics, so one must use the LR manual aperture. I use a LR-CE adapter an all my R lenses and a K&F Canon to Z adapter (bought when i switched from Canon to Nikon) this adapter also ...
  • Sir, Thanks for your efforts in preserving  and  making this convoluted trove of optical knowledge more accessible. I assume that all comments published here can be freely sorted in any manner for ...
  • your well chosen examples are excellent demonstrations of the limits of automatic learning. It illustrates the danger of posing as an expert by knowing just a little. The Gödel reference could be ...
  • Since Fora are in practice dpending on and  operated by the contributors,  one might try the failry specialized "Nikongear.net " p.
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