Monthly Archives: June 2011

Copy recursively files of one type

I needed to copy a bunch of JPGs from one folder structure to a mirror structure, but didn’t want to copy all the RAW files. Came across two examples. I tried the second (mainly because I understand it), and it worked nicely.

Example 1

Code:
#!/bin/bash
cd /home/images
find . -depth -type f -name '*.jpg' | cpio --pass-through \
 --preserve-modification-time \
 --make-directories --verbose /home/new_dir

Example 2

Code:
#!/bin/bash
cd /home/images
find . -type d -name '*' -exec mkdir -p /home/new_dir/{} \;
find . -type f -name '*.jpg' -exec cp {} /home/new_dir/{} \;

 

AF Assist tool v3.0

To layout the expectations for the next AF assist tool. The last AF assist tool v2.0 had it’s weaknesses, and I will try to address some/all of those with the next tool.

Some of the changes from v2.0 to v3.0:
– Explore the use of other AF lights. Try lights with grids from existing flashes, near IR leds, (others) to achieve a pattern/light that is both not distracting to anyone and not very visible yet enables a DSLR to quickly focus.
– Follow and recreate some of the efforts out there to reverse engineer the ETTL protocol and use it to keep the tool on ONLY while the camera is focusing. The two sources for the reversed-engineered protocol are on Kzar.net and Bill Grundmann’s Blog. I’ve wanted a project for an Arduino, and this may be the one.

 

Some more efforts to create an AF assist light:

http://www.flickr.com/groups/strobist/discuss/72157625363074208/
asa

http://www.youtube.com/watch?v=IhiHNzx0tMA&feature=related

AF Assist tool v2.0 log

I recently attended a 5 day music festival (Kinetik Festival) in montreal, Canada where I was asked to photograph the 35 bands playing. A month before the festival I had a chance to try out my first AF Assist tool. After seeing the results I knew I wanted to take such a helpful tool with me to the music festival to help in the making of images. This is the second incarnation of my AF Assist tool.  Continue reading