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How to focus in dark conditions???

Discussion

7 replies
Posted by LG Price on April 6, 2006 at 11:43 PM
How to focus in dark conditions???
I was able tonight to get several shots of American Woodcocks. Unfortunately, all the shots were out of focus. I just had to guess on the focus. I was able to barely make out the woodcock in the finder but couldn't tell focus. Here is the best I was able to do. ( I darkened the eye, it was white from the flash.

Thanks, LG
Posted by PWF on April 6, 2006 at 11:49 PM
Firtst it would help to said what you are shooting with.
It doesn't have auto-focus?
If it does, why aren't you using that?
Posted by Kent Staubus on April 6, 2006 at 11:59 PM
If you were using a Nikon camera, the flash has a built in focus aid. It's a red light that projects a grid for the camera to focus on.


Kent in SD
Posted by Garth McElroy on April 7, 2006 at 6:48 AM
Use a flashlight to illuminate the subject. See my post here
Posted by LG Price on April 7, 2006 at 7:22 AM
thanks for replies, here are the stats. I had to turn off the autofocus, it was too dark, it would just hunt.
There was a small tree at about the same distance that I could make out in the finder. I focused on the tree and hoped for the best. All I could see of the woodcock in the finder but a faintly lighter spot. I wasn't even sure I was aiming at him or a tuft of grass.

woodcock shot details
Nikon D70 340mm FL
ISO 320
1/500s (that's what you get with flash)
F4.8 - I need to figure out how to control this with flash. I admit, I haven't read enough about using the flash effectively.
Exposure Comp - +.7EV ( this was a mistake)
front curtain flash
auto-flash mode - Balanced i-TTL
autoflash comp - (-.3) ev
Posted by Rob Coomer on April 7, 2006 at 8:37 AM
The secret is a BIG FLASH! :biggrin: For my cave shots I do focus a lot in the dark, sometimes total darkness. Use the distance scale and aperture as your guide. Select a big enough aperture to cover your entire subject and then some wiggle room. That's great for long exposures, but to get anything that might be moving, requires a lot of light to get a fast enough shutter speed and a high ISO.

Some cave photographers use a laser pointer that projects a pattern. Their autofocus can lock on to the pattern, or use it for manual focus.
Posted by Bob Steele on April 7, 2006 at 8:46 AM
- Use manual settings on your camera. Use the max synch speed of your flash for shutter speed, ISO 400, and stop down about a stop from wide open on your lens.

- Set the flash to -1/3 EC. You need a good flash with long range, and sometimes a Better Beamer really helps if the subject is somewhat distant (long lens photography).

- Use a large flashlight to light up your subject. If autofocus can't lock (it should if you have a good flashlight), then manually focus.
Posted by LG Price on April 14, 2006 at 9:12 PM
Look forward to your woodcock shots, Cindy! Haven't been able to get out again at night. Hope to try again in the next day or two. Wish I had a big latern with a remote control! :wavey: