Then one night sitting in the hot tub ruminating on the problem I had a duh moment and realized that I could place the moon anywhere in the frame that I wanted it using what I then dubbed a "blind pan" or "black zoom." I figured I could expose the moon, cover the lens, then re-frame the shot (thus pan and or zoom) and expose a different background. You don't have a view thru the finder while the mirror is locked up, and so the blind or black part. I tried a few times and in theory it worked, but the results were ugly. Moons superimposed on trees or mountains etc. But after more trial and error, I learned I could compose both parts of the shot individually to get each exposure and position correct, then go on to the actual double exposure. My first useable post:
|Welcome to Vancouver, Ganymede|
This caught on and the term lens cap trick was adopted by the community. That is what I will be calling this technique from now on. Only a few that I know of have tried this with the moon but there are lots of great light painting examples. First one of mine (well it's not Explorer kind of great but I like it). This one incorporates a still of a Gumby model and then a camera toss which I will blog later about:
Check out the Light Junkies group for more information on light painting. Here is the official LCT tut from my profile on Flickr:
Zoom in on the moon and take as many shots as needed to understand where your exposure time needs to be to keep from "blowing it out" (losing the detail).
Then do the same for the second exposure and make sure you have some kind of reference so you can know where to aim.
Finally, point back at the moon and lock the shutter release. After the determined exposure time, cover the lens and then re-aim to the second spot. Zoom out and uncover the lens for the determined second exposure. Release the lock. Pray. Repeat as needed. Or just take 2 photos and layer them in Photoshop. But what's the fun in that?
I'd like to showcase some of the artists that have attempted this with the moon. All photos used here with the permission of their respective copyright owners.
Jon Steele (mccullin4): http://www.flickr.com/photos/mccullin4/6686986389/in/photostream/
Rohit Markande: http://www.flickr.com/photos/rohitmarkande/2282519270/
Eric Yeadon (The Capturer): http://www.flickr.com/photos/yeadon/406841816/
Mike Ross (TxPilot): http://www.flickr.com/photos/txross/7196438036/