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Thread: 4x10" back and compatible lenses

  1. #1
    scerto's Avatar
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    Question 4x10" back and compatible lenses

    Hello everybody

    As I said in some other thread I'm re-putting together my 8x10" setup.

    I will also acquire a 4x10" back for the camera, as I always liked shooting panoramas from time to time. Tried different medium format cameras, but I think the best thing for me would be to get a 4x10" back for my 8x10" camera.

    I can't find anywhere a table in which lenses and coverage for the format are explained.

    My actual lens arsenal (4x5" and 8x10") includes:

    - Fujinon CM-W 125mm
    - Rodenstock W 150mm
    - Fujinon A 180mm
    - Schneider Apo 210mm
    - Fujinon A 240mm
    - Nikkor M 300mm
    - Nikkor W 300mm (8x10")
    - Rodenstock Apo Sironar N 360mm (8x10")
    - Nikkor M 450mm (8x10")

    I'm sure all the lenses I use for 8x10" will cover 4x10"

    Not sure about the others.

    Do you know where I can find more data about coverage?

    Do you have experience with the format with some of those lenses?

    Thanks

  2. #2

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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by scerto View Post
    Hello everybody

    I can't find anywhere a table in which lenses and coverage for the format are explained.
    Here you have a table with a lot of lenses, http://www.largeformatphotography.in...s/LF4x5in.html

    just calculate the diagonal (square root of 4x4" + 10x10", 273mm aprox) and compare to the circles.



    Quote Originally Posted by scerto View Post
    I will also acquire a 4x10" back for the camera, as I always liked shooting panoramas from time to time.
    As you say "from time to time", and not intensively, perhaps instead purchasing a 410 back and the bellows you may do it with split 8x10 darkslides, this is way cheaper and in the field you retain the possibility to shot 8x10 or 4x10 in the same location with a single camera. If you are to hike then a 410 camera may save some weight.

    See here plenty of information about 410 and specially the "4x10 vs split 8x10 vs 4x5 stitched" section: http://www.largeformatphotography.info/4x10.html

    Regards

  3. #3
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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by Pere Casals View Post
    Here you have a table with a lot of lenses, http://www.largeformatphotography.in...s/LF4x5in.html

    just calculate the diagonal (square root of 4x4 + 10x10, aprox) and compare to the circles.

    I know that table, wasn't sure about the math to calculate the diagonal on the 4x10"





    As you say "from time to time", and not intensively, perhaps instead purchasing a 410 back and the bellows you may do it with split 8x10 darkslides, this is way cheaper and in the field you retain the possibility to shot 8x10 or 4x10 in the same location with a single camera. If you are to hike then a 410 camera may save some weight.

    See here plenty of information about 410 and specially the "4x10 vs split 8x10 vs 4x5 stitched" section: http://www.largeformatphotography.info/4x10.html

    Regards
    I might be wrong, but if I put a 4x10" back on a 8x10" do I still need to change bellow?

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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by scerto View Post
    I might be wrong, but if I put a 4x10" back on a 8x10" do I still need to change bellow?
    You can DIY manufacture a 4x10 reducing back:

    http://www.timlaytonfineart.com/snap...E8F7#h5d6de8f7

    Click image for larger version. 

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    But this won't save weight for hiking, and with a 8x10 film holder with 4x10 darkslides you do the same.

    A 4x10 (non reducing) back fits in 4x10 bellows.

    http://www.canhamcameras.com/4x10.htm



  5. #5
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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by Pere Casals View Post
    You can DIY manufacture a 4x10 reducing back:

    http://www.timlaytonfineart.com/snap...E8F7#h5d6de8f7

    Click image for larger version. 

Name:	p1567484151-3.jpg 
Views:	12 
Size:	108.6 KB 
ID:	173805

    But this won't save weight for hiking, and with a 8x10 film holder with 4x10 darkslides you do the same.

    A 4x10 (non reducing) back fits in 4x10 bellows.

    http://www.canhamcameras.com/4x10.htm


    that's why I was thinking about a reducing back instead of a 4x10" camera. Won't do hiking with these formats and will try to get Chamonix 4x10" holders. That was my idea, but probably there are better options

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    Re: 4x10" back and compatible lenses

    Here it explains how to make an split dark slide:

    http://www.largeformatphotography.in...ow-to-make-one



    Straight, you mask one half of the sheet or the other, you have two shots in a sheet, with front or rear rise/fall you can center the half frame in the lens axis.

    When you remove the 8x10 darkslide off the holder, before you shot you insert the split darkslide to mask the half you don't want to expose... and of course you replace the split slide by the original 8x10 darkslide before you remove the holder from the back, if not... it happened to me !!

    As you see, with an split darkslide you have it very easy...

    Single problem is you make same development for both shots in the sheet, still you can cut the sheet in two halves before development to develop different times.

    With the darkslide you don't need to but 4x10 holders, you don't need to cut 4x10 or to buy uncommon formats, you transport more shots with less weight and volume, and in the field you can choice the format.

    4x10 holders are nedded only if you use a 4x10 camera.

  7. #7
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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by Pere Casals View Post
    Here it explains how to make an split dark slide:

    http://www.largeformatphotography.in...ow-to-make-one



    Straight, you mask one half of the sheet or the other, you have two shots in a sheet, with front or rear rise/fall you can center the half frame in the lens axis.

    When you remove the 8x10 darkslide off the holder, before you shot you insert the split darkslide to mask the half you don't want to expose... and of course you replace the split slide by the original 8x10 darkslide before you remove the holder from the back if not...

    As you see, with an split darkslide you have it very easy...

    Single problem is you make same development for both shots in the sheet, still you can cut the sheet in two halves before development to develop different times.

    With the darkslide you don't need to but 4x10 holders, you don't need to cut 4x10 or to buy uncommon formats, you transport more shots with less weight and volume, and in the field you can choice the format.

    4x10 holders are nedded only if you use a 4x10 camera.
    Thanks for all the precious info about holders and how to treat film.

    My last concern is about lens coverage. I will try to do all the math for that.

    Bests!

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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by scerto View Post

    My last concern is about lens coverage.

    Bests!
    Just consider same lenses for 4x10 than for 8x10, the diagonal it's only around 10% less...

    In your kit single not 810 lens that you may use for 4x10 with slight vigneting is the 180.

  9. #9
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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by Pere Casals View Post
    Just consider same lenses for 4x10 than for 8x10, the diagonal it's only around 10% less...

    In your kit single not 810 lens that you may use for 4x10 with slight vigneting is the 180.
    Got it, was hoping to be able to use the 210mm

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    Re: 4x10" back and compatible lenses

    Quote Originally Posted by scerto View Post
    Do you know where I can find more data about coverage?
    Look here: http://www.largeformatphotography.in...mainly)-lenses

    But be aware that I've directed you to a list of links to catalogs etc., not to a large table that reports on some, not all, of the lenses you might want to use.

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