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07/25/2003 03:25:59 PM · #1 |
I know that my camera has a 1/1.8 CCD, but I was wondering whether or not it was possible to get a shallow depth of field using a Canon G3? It has an F2 lens, and while this should lead to a shallow depth of field it only appears to work in macro mode. This is obviously quite disappointing, as you often want just the main object of the photo to be in focus.
I hope that someone else with a G3 has figured out what I am doing wrong and can help.
Thank you for your time and help. |
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07/25/2003 03:52:45 PM · #2 |
Clearly you're going to be limited in this department when comparing results with an SLR system, but your best bet is to shoot at full telephoto with the widest aperture possible, have the subject as close to the camera as possible and have the background far away. A teleconverter will help, too.
Originally posted by sn4psh07:
I know that my camera has a 1/1.8 CCD, but I was wondering whether or not it was possible to get a shallow depth of field using a Canon G3? It has an F2 lens, and while this should lead to a shallow depth of field it only appears to work in macro mode. This is obviously quite disappointing, as you often want just the main object of the photo to be in focus.
I hope that someone else with a G3 has figured out what I am doing wrong and can help.
Thank you for your time and help. |
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07/25/2003 03:54:56 PM · #3 |
DOF is controlled by two things, the aperture and the focal length of the lense. The least amount of DOF is achieved by using the largest aperture (smallest number) available for the maximum focal length (full zoom). On the G3 this would be f3.0 at 4x optical. Using the macro focus range will give you the shallowest DOF.
Of course adding diopters (closeup filters) will further decrease the DOF at any focal length.
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07/25/2003 04:07:17 PM · #4 |
Thanks for replys -- shame I can't afford a new battery never mind a D100 :-)
Not that my skills are up to it yet. |
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07/25/2003 04:12:00 PM · #5 |
Thankyou,,
I've been trying to figure this out too.
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07/25/2003 05:26:14 PM · #6 |
please read this tutorial, it may answer some of your questions:
Depth of Field for Digital Cameras
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07/25/2003 05:32:06 PM · #7 |
After reading the tutorial, you can go here and compute the actual distances based on your camera, focal length and subject position.
You can select other cameras (and 35mm film) to see how your digicam compares in terms of near/far limits of acceptable sharpness. Small image sensors result in large in-focus regions, which is why they are fantastic for macro shots. Macro shots on a DSLR or with film are much harder. |
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