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06/17/2002 03:28:11 PM · #1 |
| What is it and how do I adjust it? |
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06/17/2002 03:32:31 PM · #2 |
daryl, DOF stands for 'depth of field'. kollin wrote an excellent tutorial about it.
as to how you adjust it, every camera's different and i don't know yours specifically. some don't let you adjust your DOF too easily. some do (it's often a setting called aperture priority). check your camera's manual.
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06/17/2002 03:33:30 PM · #3 |
Originally posted by darylbrown:
What is it and how do I adjust it?
for a quick example, read magnetic''s helpful tutorial on this subject.
* This message has been edited by the author on 6/17/2002 3:35:13 PM. |
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06/17/2002 03:36:40 PM · #4 |
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06/17/2002 06:01:23 PM · #5 |
Thank you all for the quick response, the article is very informative. Don't know yet but will dig out the manuel and see if I can adjust.
D |
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06/17/2002 10:49:43 PM · #6 |
| One thing to be aware of: Depth of field is much harder to achieve with a digital camera as compared to regular film cameras. You have to be quite close to the subject when using a digital camera. This is due to the CCD used in digital cameras. |
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06/18/2002 12:57:25 AM · #7 |
If I understand it correctly then the aperture is what mostly controls the DOF, and this is to get focus on multiple objects i think, in relation to distances from the camera. I assume my camera has a fixed aperture as I haven't found anything on adjustments for it. I have now read about my white balance which I think will help me a lot, and there was some info on E.V., I have been playing with the adjustments on these two items and am finding I can get focus on lots of different items at varying distances in the one shot. It was surprising to me as I can see where some of you have been able to get the results that you have. The practice pics I have been taking are in a dimly lighted room and I am finding a lot of grain in the results, is there something I am missing. I have my white balance set for incandescent, an E.V. set at +1.5, no flash and ISO 400. I've gone through some of my photos on a spot check for aperture setting and it is always at 3.02.
D |
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06/18/2002 07:43:37 AM · #8 |
It sounds like what you're trying to do here is increase the depth of field. The "problem" with digital cameras is that they generally have too much DOF. This is great for macro but for "general" scenes gives too much of a snapshot look - everything from the main subject to infinity is in sharp focus. I've certainly left comments on pictures here that it would be better to reduce the DOF - though I know with most cameras that it's not possible.
I'm not sure why the settings you are using would increase DOF - at a guess it might be that all the focusing is softer due to the low light/over exposure so the distinction between in and out of focus is less.
If you can't change the aperture, it's worth trying the zoom button. For a given aperture, the wider the angle, the greater the DOF. If you want to reduce the DOF then you could try moving back and zooming in. To increase it, move forward and zoom out. |
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06/18/2002 08:36:12 AM · #9 |
Will give the zoom a try and see what happens. Thanks
D |
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06/27/2002 02:19:55 PM · #10 |
Originally posted by Jonniboy:
If you can't change the aperture, it's worth trying the zoom button. For a given aperture, the wider the angle, the greater the DOF. If you want to reduce the DOF then you could try moving back and zooming in. To increase it, move forward and zoom out.
Are you sure? I had try it out immediately after I read your advice, but somehow it turns out to be the other way around. When I zoom in I have greater DOF (i.e. all objects sharp). When I zoom out and take a step nearer to the objects the DOF is lower.
Dunno... Maybe it's just my subjective feeling. I'll experiment more with that. Anyway, very good suggestion! Thanks. |
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06/27/2002 03:16:52 PM · #11 |
I have a question for those of you with fast lenses (1.8 to 2.5 at wideangle). My camera has it's widest aperture at f2.8, but the pictures still have more depth of field than I would like. Is there much noticeable difference from f1.8 to f2.5 in comparisson to f2.8 in this regard?
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