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04/06/2004 01:19:50 PM · #1 |
Hi,
I have bought a DSC f717 Digital cam and i am new to photography. I am very interested in photography. I want to learn the Exposure basics, i got the basic tutorial from this site. Still my doubts are not so clear. I am not getting that when to adjust aperture and shutter speed. For example i am planning to take a picture of some scenery how will i now how much should be the aperture and shutter speed, is this by experience or is there any other way to learn. Can anyone guide me properly regarding the same.
Thanks in advance |
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04/06/2004 01:25:09 PM · #2 |
Welcome!
Check out this link! It is pretty good for a crash course!
//www.photonhead.com/exposure/exposure.php
Message edited by author 2004-04-06 13:25:38. |
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04/06/2004 01:30:00 PM · #3 |
I only have mine since a week too, all I can tell you is learn to use the histogram for proper exposure speed metering. High exposure speeds are to be used in verry good light conditions outside sunny days or so, while small speeds are to be used under poor light but be careful the slower you get the more moved your image will be unless you use a tripod and focus on a still subject. For example if you use a 5 second exposure on a moving subject camera will capture that subject during the entire 5 seconds and possibly the result will be verry abstract.
Aperture referes to the depth of exposure. For example if you focus on a subject and your aperture is 2.0 the smallest on f717, the subject will look nice and crispy but everything behind it will be blurry. When you use a biger number as 8 everything will be verry visible. This is useful for example if you want to shoot a subject but you want to avoid a verry busy background, and you want it to stand out.
I hope this is helpful.
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04/06/2004 01:39:24 PM · #4 |
Thanks for ur replies.
One more thing what will be the best to shoot a panoroma like waterfalls or landscape. It would be better to shoot a landscape with settings on A (Aperture mode), so that the shutter speed will adjust automatically or in manual mode adjusting both of them. Is ther any ratio for adjusting both, like if i make a aperture stop of 2.0 then basically what should be the shutter speed or vice cersa.
Thanks |
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04/06/2004 01:45:15 PM · #5 |
Set the cammera to M that's full manual and you can adjust both. I donno what's best for landscapes, since I told you I have mine since only a week too and I'm still experiencing.
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04/06/2004 02:39:16 PM · #6 |
Originally posted by prince:
Thanks for ur replies.
One more thing what will be the best to shoot a panoroma like waterfalls or landscape. It would be better to shoot a landscape with settings on A (Aperture mode), so that the shutter speed will adjust automatically or in manual mode adjusting both of them. Is ther any ratio for adjusting both, like if i make a aperture stop of 2.0 then basically what should be the shutter speed or vice cersa.
Thanks |
1 stop less means 1/2 the light of the previous stop. On film SLR's a stop used to be divided into 2 steps.
On the F7x7 (and many digital camera's) one stop is divided into 3 steps (0.3, 0.7 and 1 EV).
And if you adjust the shutterspeed to -1 EV and want to keep to same overall exposure, you need to adjust the aperture the other way, so +1 EV. Try aiming your camera at a fixed point, set it to manual, set exposure so it read 0 EV, and then adjust shutterspeed and aperture to see this happen.
For panorama's (images being stitched together) the recommendation is not to adjust exposure between images, but choose one fixed exposure which is somewhere in the middle of the lighting extremes in your panorama.
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04/06/2004 03:13:26 PM · #7 |
Originally posted by willem:
For panorama's (images being stitched together) the recommendation is not to adjust exposure between images, but choose one fixed exposure which is somewhere in the middle of the lighting extremes in your panorama. |
It is also a good idea to set a custom or fixed white balance and use it for all the shots too.
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04/06/2004 04:07:13 PM · #8 |
| As per ur experience can you please let me know what are the best custom adjustments for panorama settings both in less and more light. i will really appreciate that. |
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04/06/2004 04:13:28 PM · #9 |
Originally posted by prince:
As per ur experience can you please let me know what are the best custom adjustments for panorama settings both in less and more light. i will really appreciate that. |
Every situation is different so experimenting would be good. When doing panoramas use a tripod and make sure you use the lock/hold setting in white balance. |
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04/06/2004 04:18:50 PM · #10 |
And remember as the lcd or viewfinder of the f717 and in general any digicam doesn't show you 100% what you really have, to make sure your exposure is good learn to use the histogram. I found that to be a verry powerful thing on my f717. I had a few pics taht looked great on lcd but they were way overexposed/underexposed until I started paying attention to the histogram.
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