Exposure math

Discussion in 'Medium Format & Large Format' started by Rick50, Jul 7, 2016.

  1. Rick50

    Rick50 Been spending a lot of time on here!

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    Went out the other night to try out the Cambo 4x5. Figured I would try some filters. By the 4th shot I was using 3 filters. A #8 yellow to darken the sky, a 2 stop split grad to increase exposure on the water, and a 6 stop little stopper to smooth out the water. After all the math in my head and adding reciprocity time from the Ilford chart I ended up with 12 seconds at F/8 on a 180mm lens. Getting an exposure App might simplify this. But it did turn out.
    [​IMG]


     
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  2. dxqcanada

    dxqcanada Been spending a lot of time on here!

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    You and KD keep reminding me that I once had to "think" before I took a picture.
     
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  3. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    Nice; good job on the exposure.
     
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  4. Rick50

    Rick50 Been spending a lot of time on here!

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    It is very different. With my digital camera I would easily take 50 or more pics in the hours time I was there. It records everything, keeps track of time, etc. On the 4x5 I use a digital voice recorder and talk to myself to keep a record. After setting up the camera and getting it focused I didn't move anything till I was done. Just swapped out filters. I took 6 pictures in that hour.

    Thanks John.
     
  5. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    0.00167 fps.
     
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  6. jcdeboever

    jcdeboever TPF Supporters Supporting Member

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    Excellent
     
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  7. spiralout462

    spiralout462 TPF Supporters Supporting Member

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    It Was worth the effort!!!
     
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  8. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    Which is actually pretty quick.
     
  9. john.margetts

    john.margetts No longer a newbie, moving up!

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    Ten minutes per frame has always been my 'in the zone' rate. I can get a lot slower - I am happy with five frames per day so long as they are keepers.
     
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  10. Gary A.

    Gary A. Been spending a lot of time on here!

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    You're having way too much fun. I need to dust off the Fuji GX680 and polish up on my math.
     
  11. Rick50

    Rick50 Been spending a lot of time on here!

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    I think thats the point with film. One needs to slow way down and really look at the scene a lot more. It's a different perspective than digital.

    I've considered that camera. It has some nice features but there seems a shortage of parts available. I like 120 roll film and will probably go 6 x 17 as I think I have more things I can do with it. When you start shooting Fuji Velvia on 4x5 it can get pricey.
     
  12. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    The medium makes no difference. What you are referring to here is economics. When you shoot film, you know each image is costing you so much money whether it comes out the way you want it to or not.

    You could just as easily go out and shoot 6 frames an hour with a DSLR.
     

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