Sites you should bookmark....

If you are learning photography, want a brush-up, or are just plain curious, I heartily recommend bookmarking the following links. They come highly recommended, and not just by me!

Jodie Coston: Online Photography Course — The best free on-line course I've found!
http://www.morguefile.​com/classroom/

Geoff Lawrence: Photography Tutorials
http://www.geofflawren​ce.com/photography_tut​orials.html

Gary Voth: Articles and Tutorials
http://photo.net/learn​/

Steve Hoffmann: Tech Articles and Tutorials
http://www.sphoto.com/​techinfo/

Matthew Cole: A Tedious Explanation of the f/stop — Everything you'll ever need to know!
http://www.uscoles.com​/fstop.htm

Matthew Cole: A tedious Explanation of Depth of Field — DoF from soup to nuts!
http://www.uscoles.com​/depthoffield.html

Matthew Cole: Lightning Photography — How to capture the flash!
http://www.uscoles.com​/phlightn.htm

NK Guy: Flash Photography with Canon EOS Cameras — THE guide to flash photography!
http://photonotes.org/​articles/eos-flash/

Joe McDonald: Flash Primer Article [In four parts]
http://www.naturephoto​graphers.net/articles0​503/jm0503-1.html
http://www.naturephoto​graphers.net/articles0​603/jm0603-1.html
http://www.naturephoto​graphers.net/articles0​703/jm0703-1.html
http://www.naturephoto​graphers.net/articles0​903/jm0903-1.html

Chuck Gardner: A Holistic Approach to Lighting and Digital Photography — Really good stuff!
http://super.nova.org/​DPR/

Good stuff Roger, you should post this in one of the Stickies!

tonylong wrote in post #16189786
Good stuff Roger, you should post this in one of the Stickies!

Tell Jon. He's one of the sticky makers.

Besides, he needs something constructive to do....

Froknowsphoto.com is pretty good. The weekly RAWtalk podcasts are definitely worth a listen.

Hate to complain, but Cole's explanation of DOF is a bit too simplistic! He states

"•...the focal length of the lens
The shorter your focal length, the more depth of field you will have. A 20mm lens will have more depth of field than a 50mm will have more than a 100mm. With really short lenses, like 4 mm, you will have immense depth of field. With long lenses, like 400mm, you will have miniscule depth of field.
•the distance to the subject
The closer you are to your subject, the less depth of field there will be. The further away you are, the more depth of field you will have.
"

In truth, if you shoot with 100mm at 20' and 200mm at 40' and 400mm at 80' and 800mm at 160' to subject, the actual DOF is IDENTICAL for all four FL and distance combinations, contrary to what he states in the first point! If you combine point 1 with point 2, you have the observed real world result which I just stated. One might better say that perceived DOF is effectively dependent upon the size of the subject within the frame.

I like his use of the water analogy for f/stop discussion, I have been using the same analogy since the 1970s in teaching photography to others!

Thanks for the info. Always looking for more tutorials.

I like to refer folks to Cambridge Color's article on DOF

http://www.cambridgein​colour.com/tutorials/d​epth-of-field.htm

Of course, if one really wants the skinny on depth of field, one should look here:
http://dougkerr.net …ticles/Depth_of​_Field.pdf