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  1. Replies
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    photography light tent

    Half-round cross-section tents work best, giving a more even light, (making it easier to light the top) and can be constructed with flexible tent poles or e.g. loops of half inch diameter blue or...
  2. Is it possible to remove cleaning marks from lens?

    You may find that it only matters in that it increases flare when you need, but do not use, a lens shade.

    Test the lens with the sun just out of shot, with and without a lens share/strateically...
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    photography light tent

    You need a complete tent for reflective items, with a hole for the lens, but you could get away with a simpler system: You can get very large diffusers/soft boxes for studio flash units - some of...
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    photography light tent

    I used ordinary white photographic background paper, but any translucent white sheet would do.

    If you are in the rag trade and the material will not be likely to get dirty or damaged...

    Net...
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    photography light tent

    I have one.

    I had it made for table-top-on-glass, for silver etc., but the glass is removable.

    The table width is adjusable up to about half background sheet (4 feet) square glass, with support...
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    Its okay to love your camera

    It is OK to love a camera you built yourself, or that you bought for a song and have lovingly cared for for decades - but if you love a camera system that would cost to replace as much as most people...
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    Lighting

    Where are you? - perhaps someone can reccomend a Photographic club with a studio lighting group.

    You would obviously like to use the lights you have - what lights have you got?
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    Digital field or View camera

    Thank you all for your replies...

    I would need rear tilt and swing, as I might be using 35mm lenses on a 5 x 4 cm digiback, and would not have the coverage for front tilt.

    Would the P2 to P3...
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    Digital field or View camera

    I am thinking that, when I get bored of the weight of a Sinar M + P3, I could leave the monorail and geared movements at home, and mount the lens board, bellows and rear frame/shutter all on bits of...
  10. Any One Interested In Organizing an East Coast Conference ?

    You could be more specific (in your thread title)

    This is an international forum, and many countries have East Coasts!

    If you envisige holding the conference near Lowestoft or Felixtow, I...
  11. Lens forward tilt with very wide angle lenses

    Using very short lenses and tilts give you the opportunity for a vast range of scale in the picture - try filling the frame with an insect in the forground and your bust in the background.
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    Tips to Speed LF Landscape Setup

    Leaving the camera all set up and ready to go on the tripod helps - I daydream about a system which gets itsself out of the gadget bag, puts isself on the tripod and levels itself, ready for me to...
  13. Who needs heavy? My 4x5 kit weighs 8.5 lbs.

    My bigger lenses weigh 13lb, my medium sized tripod weighs 22lb (the large (10m) tripod weighs 75kg).

    My 600mm f9 is good enought to cope in most circumstances, and I do have a carbon tripod.

    I...
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    Hyperfocal Distances Beyond 8x10

    f = focal length N = f number = aperture (relative)

    a = Max COF diameter

    Hyperfocal distance = f +ff/Na

    If you want it to look sharp through a 10 x loupe, or in a big enlargement, then...
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    Schneider Super-Angulon 5.6/38XL

    Henning:

    I have the 47XL, but have not used it much yet.

    How do the SA XLs compare with Hasselblad/Zeiss lenses for res and contrast?
  16. Seeking advice on DIY 35mm dups from 4x5 color trannies

    Mike:

    There is someone in the UK who does slides from digital, but they are very low res - what do you call high res for slide printing?

    When will someone market a 24mm printing width injet...
  17. Seeking advice on DIY 35mm dups from 4x5 color trannies

    Don't Fuji make a dupliating film?

    If you have a Sinar, and plenty of rail, you can set up an optical bench.

    True macro lenses are only at their best from about 1:4 to 4:1, so a close-up...
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    Schneider Super-Angulon 5.6/38XL

    I think he 47XL is superior in many respects... and I think it gives better coverage and/or angle (120 degrees)
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    Depth of field on tilted plane

    I am off to Cornwall for a week, but I am working on formulae derived by co-ordinate geometry from Merklinger's diagram for calculating view camera depth of field.

    The question I as myself is:
    ...
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    Future of ULF

    ...and when they stop making the film,,, you can all start coating your own glass plates!

    I thought that the market for ULF was theatrical props.
  21. Flatbed v. drum scans for lightjet prints - Microtek 1800F.

    Has anybody used e.g. a 16 shot digiback and a Digitar macro lens to get LF pictures into a computer?
  22. Flatbed v. drum scans for lightjet prints - Microtek 1800F.

    Neal Thank you, that is useful infomation, but the 1,200 is not significently better that the 4,000, and would not, IMO show a vast inprovement over the quality 4000, 5000 and 6000 ppi flat-bed film...
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    Depth of field on tilted plane

    Bob:

    Do most monorails have the "apeture for required DOF" scale, or which cameras do?
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    Depth of field on tilted plane

    Dave

    One answer is to determine not the DOF, but the aperture required for the DOF you need: there is a scale for this purpose on Sinar monorails.
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    LF Depth of Field

    If you are not going to enlarge much, then why use Large Format?

    If you use LF because you need movements, and have no smaller format camera with adequate movements, you might consider a MF roll...
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    slides from your prints

    You can use an incident meter to gauge evenness of illumination, but a spot (flash) meter would be better for setting the camera, and to asses the contrast ratio for choice of film (lattitude).
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    slides from your prints

    I made a bracket to enable me to mount a Hasselblad in place of my enlarger head, so I could put the print on the baseboard or floor, using the vacuum flattener if required.

    You can put the print...
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    Why do so many LFers use slow films?

    Jay:

    There is a trend, rather than a direct relationship between grain and speed.

    Some people use LF cameras because they are masochists, or they enjoy the exercise, but if you want an...
  29. Can a 4x5 Sinar P accommodate a Fuji 450mm with one bellows?

    I thought that my bellows was standard Sinar, but it does just work with a Rodenstock 600mm (24") process lens, with 24" of rail.
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    Why do so many LFers use slow films?

    Films continuse to improve...but if you move to a large format, and use foour times as much film area, and use a film two stops faster, you end up with no more detail, and no less grain.

    On MF I...
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    lens distortion

    My S SA 47XL seems to give slight pincushion distortion, but it was a a very old building, and it was not straight!
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    Making LF Network Truly Large Format

    The implication would be that questions relative to movements on a Sinar p3 would also be appropriet here - even if used with a DigiBack.

    Hi res 16 shot DigiBacks with mini-monoprails and special...
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    Making LF Network Truly Large Format

    The Hasselblad Flexbody is a 66 MF Roll-film camera that uses standard MF lenses (with shutter) but it has ground-glass viewing and some movements, and I have used mine for serious catologue work -...
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    Horseman 2x teleconverter

    I believe that teleconvertors usually work better on long lenses.

    Has anybody tried using one on a long lens (300, 600, 900mm)

    There is presumably a limit on the diameter of the rear element of...
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    Making LF Network Truly Large Format

    Yes - the LF forum is for LF specific questions:

    ...but should that exclude the use of a 617 rollfilm adaptor on a Sinar - the only LF feature you miss out on is frame-by-frame development.
    ...
  36. Which camera for table top/macro work?

    I found that, for single items or three-in-a-row, using 6,000 watt- seconds of light I could manage without movements most of the time.

    I needed movements for silver plates, and managed OK with a ...
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    British Landscape Photographers

    Polaroid Filters...

    can produce artificially deep blue skys and the blue sky creats a blue cast anyway, so I tend to use a pink filter with a polariser.

    A landscape should look natural, but I...
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    British Landscape Photographers

    There is plenty of landscape out there - get out and take some pictures... I often use a polariser or a 1.5 or 3.0 pink correction filter.

    How long is you course? What do they teach you? What...
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    macro vs. telephoto

    I think you know that you have the best tool for the job, and that you are just trying to make the rest of us jealous - if you do not appreciate your Macro-Sinaron, I would gladly give you a few...
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    Nodal point of lens

    Get a sheet of frosted glass and measure it, or ask Bob.

    Then you need to know the hyperfocal distances for each f stop, and the extensions that give you that focusing distance.

    I believe that...
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