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#1
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posted to rec.boats
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On Fri, 25 Nov 2011 12:07:05 -0700, "RG" wrote:
What I was looking for in most of these was depth of field, thus the high ISO and small aperture. And, I was wanting to see what effect the higher ISO had on the pictures, but I didn't want to take it all the way to the max of 1600. Your thinking is correct in that the higher ISO will afford a smaller aperture and therefore a greater depth of field. A deep depth of field is important in landscapes such as these only when you have a subject in the very near foreground that you want to be in focus along with the intermediate and background subjects. In most of these photos, there isn't a close foreground subject, so a deep depth of field isn't really required. In the photos where the grasses are in the foreground, perhaps a bit more depth of field is required, but not all that much. The penalty of an unnecessarily small aperture is lens diffraction, which can reduce sharpness. Since I shoot primarily landscapes, I'm very much attuned to the issue of depth of field. In fact, it is because of this that I almost always shoot in aperture priority mode. I let the depth of field requirements of the scene dictate the aperture setting I use and will let the shutter speed and ISO remain variable. My default aperture is f8, because it usually offers enough depth of field and is typically the sweet spot of sharpness in most lenses. If I require more depth of field I will either stop the lens down further or use a wider focal length. If I am trying to narrow the depth of field, I'll do the opposite. In any case, I'll typically set the focus at a hyperfocal distance (somewhere between the foreground and background of the scene. Also, I always shoot a scene with several bracketed exposures, often using different aperture settings and then sort it all out at home using a large monitor. Perhaps on your next trip out west we can hook up for a photo shoot. Russ Good tips. I like the bracketed exposure idea. Never done it. A photo shoot out there would be a blast. I'm thinking of going on one, even if I have to fly there and back. Shoot, it might make a nice motorcycle trip. |
#2
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posted to rec.boats
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![]() Good tips. I like the bracketed exposure idea. Never done it. A photo shoot out there would be a blast. I'm thinking of going on one, even if I have to fly there and back. Shoot, it might make a nice motorcycle trip. Your D200 has an auto-bracketing feature that makes bracketing unbelievably easy. You tell it how many exposures you would like to take (3,5,7 or 9), how far apart the exposures should be (.3, .7 or a full stop), then hold down the shutter. The camera will fire the shutter the requested number of times and then stop. You don't even have to count. I always bracket at least three exposures, one stop apart, more exposures if the dynamic range of the scene is high. I do this for two reasons. First, as good as the meters are in modern cameras, they don't always get it right. Having three or more exposures a stop apart lets me choose which exposure is the best to use in post production. Second, if a single exposure won't yield good results due to high dynamic range, having a bracketed set of exposures allows me to merge then in an HDR program, often time producing a result that is superior to what could be accomplished using s single exposure. This approach would have been prohibitively expensive using film, but pixels as free. The only cost is the extra time required to sort through all the exposures in post production. I'd rather sort these out at the comfort of my desk at home using a large monitor than to try and determine optimal exposure using a LCD screen on the camera in bright sunlight. Russ |
#3
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posted to rec.boats
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On Fri, 25 Nov 2011 11:08:30 -0500, John H
wrote: http://i98.photobucket.com/albums/l2...l/MNV_0054.jpg === Nice picture of a ball eating lake. :-) |
#4
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posted to rec.boats
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On Fri, 25 Nov 2011 13:10:36 -0500, Wayne.B wrote:
On Fri, 25 Nov 2011 11:08:30 -0500, John H wrote: http://i98.photobucket.com/albums/l2...l/MNV_0054.jpg === Nice picture of a ball eating lake. :-) I've put my share in there, that's for damn sure. I've also bounced them off the ice up onto the green. |
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