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Old Mar 29, 2006, 6:42 PM   #1
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With my new camera I was trying to take close ups of the redbud tree blooms with the blue sky in the background. Looks like the green of the leaves and the pink of the buds blurred somehow in my photos. How can I do this on purpose next time? Kinda like it.
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Old Mar 30, 2006, 11:58 AM   #2
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Except for the unwanted blurry foreground objects the shots are fine and seem to meet the challenge.

This is done via control of your depth of field (DOF) which can be simplified to the area within your image that is directly in focus. This area is dependent on your aperture (F-stop) , the size of the image, etc.






Quick Reference Guide: Depth of field is governed by three factors: aperture, lens focal length and shooting distance. Remember the following relationships:
    1. The smaller the aperture, the deeper the depth of field (the other two factors remaining the same). For example, if the lens focal length and the shooting distance stay the same, the depth of field is much deeper at f/16 than at f/1.4. [/*]
    2. The shorter the lens focal length, the deeper the depth of field (the other two factors remaining the same). For example, comparing a 28mm lens with a 50mm lens at the same aperture and shooting distance, depth of field is deeper with the 28mm lens.. [/*]
    3. The greater the shooting distance, the deeper the depth of field. i.e. other two factors remaining the same). For example, if the subject is photographed from three and then from seven meters away, the zone of sharpness in the foreground and background is greater at seven meters.
[/*]

Another characteristic of depth of field is that it is generally deeper in the background than in the foreground.
The original URL is:

http://www.mir.com.my/rb/photography...mls/depth.html

There are many URL sites, simply Google and find one that suits you.

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Old Mar 30, 2006, 3:06 PM   #3
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You've also got petals and leaves close to your lens when you fired your shutter button. They've faded into the shot slightly. In the first you've got the pruple hue and in the second the green/yellow. Easy to solve, jsut make sure nothing is in front of your lens. Just like you'd make sure your finger wasn't in the way of the lens.

The background you've got there (sky) is very bright. Much brighter than the subject (branches) which may result in the either the subject being dull or the background being washed out. Practice shooting with the flash on and off and with the sun in different positions (to the side, behind etc) to see how each situation can change how the final photograph looks.

When shooting with a laight background you can als get purple fringing. Do a google and a search on the forum for more info. So you know waht to expect, how to help with it and how to (sometimes) get rid of it.
http://en.wikipedia.org/wiki/Purple_fringing

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Old Mar 30, 2006, 6:43 PM   #4
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Thank you both for your help!! I apprecitate it. I have a lot to learn!
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Old Mar 30, 2006, 6:43 PM   #5
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Thanks very much. Love your silly giraffe.
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Old Mar 31, 2006, 11:41 AM   #6
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I second Ferny's opinion that you had leaves and blossoms very close to your lens when you captured your images and it has everything to do with DOF. We can get quite creative sometimes using the technique though! :-)

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