Afterexposure Photography

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Diana F+ Cheat Cards

I’ve never been really satisfied with the icons on the bottom of the Diana lens that change the aperture, and wanted more ‘exact’ information on what was going on. ¬†After some searching, some fiddling, and some trial and error, here is a cheat card you can print and fold in half to hang from your Diana strap:

Diana Cheat Card

Click for full size!

For different editable versions, click here for the source doc in OpenOffice format.

This chart is a kind of nomograph; you select your film speed on the left, follow the line through the current weather/lighting condition in the middle, and you’ll find out which aperture to set the Diana to on the right. I didn’t put the little icons from the Diana on this chart on purpose as they are bit misleading. Just remember that f/22 is the smallest aperture, and is the little sun icon; f/11 is the biggest aperture, and is the cloud icon.

On the right side is a 35mm turn advance guide. I have my Diana’s winder knob marked off in ‘hours’, or 12 spaced tick marks, so this is the number of ‘hours’ per frame that you should turn the knob. So a ’12’ means one full turn. The X at the start is to load some film before shooting the first frame, and the bold ’10’ is where a roll of 24 exp might run out… same deal with the last ‘!’… you may or may not get this frame, depending on how accurately you’ve been winding.

So where did all this goodness come from? Not me! I’m standing on the shoulders of giants, here folks. Here is where I pulled the information from:

With very little digging I found a chart at Indian Hill imageworks that gives a great summary of exposure times.

But it was a little ‘big’. I tried printing it small, and hacking off the bits I don’t use, but still wasn’t happy.

I wasn’t really sure about the EV descriptions, either. So another 2 seconds of Google and Wikipedia had this to say about Exposure Values.

So now I could use more meaningful descriptions (at least to me), and I could use only the ISO values that I was shooting at to create my own chart.

I also wanted to put something on the back of the chart. Since I sometimes shoot with 35mm film loaded, why not a film advance guide that gives the number of turns per frame? With 35mm loaded there little red window is taped over, so you do have to guess a bit.

I started with this chart over at Photon Detector… but again… wanted something smaller. I also confirmed the number of turns by both putting film in the camera with the back off and counting as I advanced, and of course by shooting some film and checking the results. Depending on what you are using as a take-up spool, and if you use any masks, you might want to change these numbers.

Now, time to get out there and do some shooting!

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