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General Photography Technique Discussion on General Photography Technique

DOF, camera shake and macro work

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  #11  
Old 21-12-05, 15:01
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Quote:
Originally Posted by yelvertoft
Errrmmm, there's only one attachment Pete. You'll have to split over 2 posts anyway (max. 5 attachments per post). I'm very interested to see the results.

Duncan.
The one photo is made up of strips from the the 7 I took, the aperture decreasing from left to right...
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  #12  
Old 21-12-05, 15:26
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Thanks Pete. Think I might even print this off and laminate it on a small card as a quick reference.
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  #13  
Old 21-12-05, 16:43
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Hi again ... a few comments on tripods and flashes.

What works best in tripods (for me anyway) is one without a center column and that has a low minimum height with the legs collapsed. One where the legs splay out allowing you to get just a few inches above the ground is helpful as well. I find that most of my macro shots are low to the ground with me actually sitting or laying on the ground. Of course, 95% of my shots are nature.

For a flash, those expensive dedicated ring flashes are not required. A good reflector can do a lot or a regular flash (sometimes mounted off camera with a bracket) can frequently add a bit of light without harsh shadows (use a diffuser - thin paper works).

You don't have to get the equipment that allows to to get every shot. It's OK to miss a shot now and then.
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  #14  
Old 21-12-05, 16:56
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On depth of field - don't forget that DOF works as a percentage (sort of) of distance from the subject. With a 50mm lens at f/4 and 1 foot you may have a DOF of under 1/16 inch. But at f/4 and 10 feet that becomes 2 feet.

An online DOF calculator is at: http://www.dofmaster.com/dofjs.html
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Last edited by jseaman; 21-12-05 at 17:07.
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  #15  
Old 21-12-05, 17:18
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Quote:
Originally Posted by jseaman
An online DOF calculator is at: http://www.dofmaster.com/dofjs.html
The wonders of the web. Great link.

Don
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  #16  
Old 21-12-05, 18:38
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I don't think that trying to show DOF at various apertures worked very well using the CD cover, so I've given it another go - hopefully this one will make it a bit clearer. All taken using my EOS350D and a Sigma 105 macro, at a distance of approx 9 inches - then peeled, chopped and mashed together...
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File Type: jpg dof.jpg (94.9 KB, 17 views)
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  #17  
Old 21-12-05, 19:06
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Just my twopennies worth, I've been shooting macro for many years. I now use the Canon 100mm & Sigma 180mm, for illumination I use a lastolite softbox attached to my Sigma flash gun. Would love the Canon twin light macro flash, but find it to be a little to expensive.

As for tripods I kicked the Benbo Trekker into touch, it's a very versatile tripod but a bit of a pig to set up. I recently purchased a Giottos Innovator Tripod MT 9170 which I find to be far superior to the Benbo and equally as versatile + it's also perfect for my canon 10D with the Bigma attached.
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  #18  
Old 21-12-05, 20:34
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I know a guy who uses tin-foil as a reflector for lots of his macro work, mainly plants/toadstools. Anyone else tried this technique?

Im also looking for a tripod that hugs close to the ground for low angle and macro shots.

Good work on the DOF image example, Pete.
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  #19  
Old 21-12-05, 21:04
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The Giottos will do this for you. the center column is removable, which then exposes a three way head into which you re-insert the center column. Then with the legs being adjustable to three different positions allowing close proximity to the ground. Have a look here, where you can see all the various positions obtainable with this tripod
http://www.giottos.com/eng_public/frameset.htm.

I use the Innovator Tripod MT 9170, you can also buy a similar one made from carbon fibre
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  #20  
Old 21-12-05, 21:24
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Thanks for the link wolfie; not sure if its me, but im not seeing the Innovator MT9170. I'll keep trying
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