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  1. #1

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    Hasselblad Extension tubes (portrait/80mm)

    Hi Lads&Ladies, I want to get a bit closer to my model at times but my 80mm lens can't focus for a head shot since it won't go closer than than a meter.

    Now can I just screw any extension tube from Hasselblad on the camera or should I go for a certain lenght? I can't find much info on this.

    And how bad is the balloon effect with and 80mm lens for portraits I hear people speak about?

    Thanks!
    Q

  2. #2
    bobfowler's Avatar
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    When shooting people, I wouldn't opt for an extension tube on a normal lens, rather I'd go for a longer focal length. If that isn't an option (or if you REALLY want big noses and big ears), a short extension tube would do the trick, though a +1 aux close up lens would be cheaper.
    Bob Fowler
    fowler@verizon.net
    Some people are like Slinkies. They're really good for nothing, but they still bring a smile to your face when you push them down a flight of stairs.

  3. #3

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    Thanks for the tip, I am not sure what a +1 aux close up lens would be. Certainly not in case it's cheapre than an extention tube...

    Have a fine weekend!

  4. #4
    Ole
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    A +1 close-up lens is a "filter" of clear glass with a focal length of 1 meter. So if your camera is focussed at infinity, the combined lens/CU+1 system is focussed at 1 meter. There are cheap ones, and anastigmatic (?) ones.

    Extension tubes move the whole lens away from the film, same as happens when you turn the focus ring to focus closer. A good choise is one which starts about where the lens stops - which of course depends on the focal length of the lens. There are tables to be found, or you can try to calculate it yourself from the basic "thin lens" equations.
    -- Ole Tjugen, Luddite Elitist
    Norway

  5. #5

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    The close up lenses are called PROXARs. They come in 3 strengths.. +0.5, +1, and +2. The diameter is set in mm, and generally, if your lens is chrome or uses a Compur shutter ( C lens) , you want a B50, and if the lens is black AND HAS A PRONTOR Shutter ( CF Lens), you would want a B60. If you lens has NO shutter ( F lens), then you want a B70. They were and are made by Zeiss ( for Rollei) or Hasselblad. Either make will fit your lens.

    Extension tubes are more money....they come in lengths of 8, 10, 16, 21, 32, and 55mm. At least from memory that is correct. The 10 and 21 and 55 are older and less costly ( no reason, ths is is just the way it is.)

    There is a lot of overlap between ranges ( with close up thingie or wothout) using either setup. If you know what distance you wish to shoot, email me and I will look up your combo of lens plus distance and tell you which item specifically to get.
    Frank Filippone

  6. #6
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    I used the extension tubes; they'll usually give you a better quality image when compared to proxars, especially along the edges of the image. However, proxars are much faster. I've never done close ups of people, though I have done close ups of statues of people (which are a bit different!) and I thought my 80mm lens alone was good enough, but if I needed to get closer then a 21mm extension tube worked great for me. Personally, if you want to do a lot of close-up shots of models, I'd take Bob's advice and get another lens, partly because using a longer focal-length lens is more optimal than using a lens with tubes or proxars (though not more economically optimal!) but also most people usually wont be too comfortable with a camera right up in their face, which is what you'll get when using any extension tubes. A longer focal length lens will allow you to work further away from your subject, and I think most people will appreciate that.

  7. #7

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    Why not just crop the image?

  8. #8
    bobfowler's Avatar
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    Quote Originally Posted by waynecrider
    Why not just crop the image?
    Because that kinda defeats the purpose of using a larger format film.
    Bob Fowler
    fowler@verizon.net
    Some people are like Slinkies. They're really good for nothing, but they still bring a smile to your face when you push them down a flight of stairs.

  9. #9

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    Quote Originally Posted by bobfowler
    Because that kinda defeats the purpose of using a larger format film.
    Think about it; He can't get closer then a "meter" (39 inches) on 6x6 with an 80mm lens for a head shot. My question is, what kind of head shot does he want to produce, what enlargement size is he going for and how much is he going to loose cropping? I just checked with my Rollei and he should have no problem cropping to 11x14, and maybe larger. A tube will just get him limited DOF and distortion, which he may want, and the reason for his post. Otherwise we all know, a 150 or greater for perspective.

  10. #10

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    Seems the tubes are still the best solution for my budget, an extra job for a 150mm lens is on its way as well

    Cropping gives me the shivers to be honest, I can still take those pictures with a nikon FE I do have with a 105 mm, but I just like the MF a lot.

    Thanks for all the tips, I've never heard about those strange lens filters so again I've learned something new over here!

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