niggles

magicmonkey · Feb 11, 2006

Hi Guys
I've been taking photographs for a good few years now and I'm starting to need more technical knowledge than the things I've worked out for myself, specifically things like how to work out what your apperature should be set to once you know the distance between 2 points of focus, how to work out which ISO to use with each apperature etc, could anyone answer these qiestions or point me in the right direction of some free resources?

here's a little of my stuff I've done recently just so you know where I'm at:

http://www.photography.poijoy.com

Torus34 · Feb 11, 2006

You can use the depth of field indicator scale on your camera to determine the largest aperture which will permit sharp focus at two specific distances. Tables are also available, and you can make up exact graphical plots from the data.

ISO and aperture is more complex, as the shutter speed must also be considered. You'll have to think about this and refine your question a bit so that it admits of an answer.

magicmonkey · Feb 11, 2006

Thanks Torus, to be honest I don't know enough about the technical side of things to rephrase the question propperly, is there somewhere that would give me a beginners guide to the technical side of photography? also, where would I find these tables you speak of?

Torus34 · Feb 11, 2006

If you're shooting 35mm, there are many general guide books available. Do check out your local library before you pop for big bucks here. A search engine should kick up some depth of field charts on the 'net. Please note that a depth of field chart will be for a specific lens focal length. Again, if you're shooting 35mm, your basic lens will be about 50mm focal length.