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  1. #1

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    iphone lightmeter for pinhole

    hi all

    i entered this analog photography world from LOMO toy cams

    now i am doing some more experimental things and considering to get a light meter to go with my DIY pinhole...
    saw on the internet that there's lot of iphone light meters

    this one looks good http://www.kitdastudio.com/?p=183
    and it said it got a timer for the pinhole photogtraphers... sounds "designed"...

    but... anyone knows how these things work like? accurate like the analog ones ?

    I got a few free ones http://itunes.apple.com/us/app/light...410228606?mt=8
    they works pretty well when compared with reading from digital cam pictures...

    any suggestions would be appreciated

    best
    medium120

  2. #2

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    I find my android one is a good match for my digital camera. Unfortunately it only does ev2-ev12 (meaning can only be trusted for ev3-ev11) due to hardware limitations, which sucks when dealing with ev11-16. Not sure what the range on the iPhone light sensor is though.

    I'm personally looking around or a small analogue meter to replace it with.

  3. #3
    Mike Wilde's Avatar
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    It is common to use a small dial calculator to translate the smallest commercial light meter reading (typically f/32 to f/90, depending on the hardware) into the f/256 to f/512 range common with pinhole. The trickly part is to also incorporate the effect of reciprocity failure into the exposure. I have seen home mnade dial calculators that have two sides; one for the smaller aperture translation, and the second to do reciprocity work arounds.
    my real name, imagine that.

  4. #4
    SMBooth's Avatar
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    Not enough ranges in the aperture. Pocket Lightmeter app is proberly better option for "app" meters. EV calculator is worth having a play with too. Not a lightmeter as such more a EV dial with good aperture selection

  5. #5

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    I have found metering to be counterproductive with pinhole. Perhaps if the exposures are going to be in the range of seconds instead of minutes, it might be helpful. I think learning the characteristics of a particular film and developer is more useful in pinhole.



 

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