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#1
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Using LCD screen to shoot photos in DSLR
I saw the new Olympus E-Volt 410 and it reminds me much of the old
OM-1 camera.... a relatively small digital SLR and it looks very stylish, and lean. In those days, the introduction of the OM-1 got a very favourable reviews. I could not find a more "sexier" SLR camera than the OM-1 (as well as the OM-3). In the new digital SLR E-410, I also find out that Olympus appears to try the lead for a "live preview DSLR", which means that you can use the LCD to look at the object before you push the shutter button. I think most of other DSLR requires you to look at the eye piece in order to shoot an object. What other DSLR has this capabilities? I heard Fuji Pro S3 has similar feature. Any others? and will there be other camera manufacturers to follow this trend? |
#2
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Using LCD screen to shoot photos in DSLR
On Jul 21, 11:07 pm, wrote:
I saw the new Olympus E-Volt 410 and it reminds me much of the old OM-1 camera.... a relatively small digital SLR and it looks very stylish, and lean. In those days, the introduction of the OM-1 got a very favourable reviews. I could not find a more "sexier" SLR camera than the OM-1 (as well as the OM-3). In the new digital SLR E-410, I also find out that Olympus appears to try the lead for a "live preview DSLR", which means that you can use the LCD to look at the object before you push the shutter button. I think most of other DSLR requires you to look at the eye piece in order to shoot an object. What other DSLR has this capabilities? I heard Fuji Pro S3 has similar feature. Any others? and will there be other camera manufacturers to follow this trend? Canon 1D MkIII |
#3
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Using LCD screen to shoot photos in DSLR
Several Olympus models starting with the E-10 several years ago. Today I
have a Panasonic DMC-L1 with "Live View", just like the newer Olympus DSLRs. Bye. wrote in message oups.com... I saw the new Olympus E-Volt 410 and it reminds me much of the old OM-1 camera.... a relatively small digital SLR and it looks very stylish, and lean. In those days, the introduction of the OM-1 got a very favourable reviews. I could not find a more "sexier" SLR camera than the OM-1 (as well as the OM-3). In the new digital SLR E-410, I also find out that Olympus appears to try the lead for a "live preview DSLR", which means that you can use the LCD to look at the object before you push the shutter button. I think most of other DSLR requires you to look at the eye piece in order to shoot an object. What other DSLR has this capabilities? I heard Fuji Pro S3 has similar feature. Any others? and will there be other camera manufacturers to follow this trend? |
#4
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Using LCD screen to shoot photos in DSLR
On Jul 21, 9:07 am, wrote:
I saw the new Olympus E-Volt 410 and it reminds me much of the old OM-1 camera.... a relatively small digital SLR and it looks very stylish, and lean. In those days, the introduction of the OM-1 got a very favourable reviews. I could not find a more "sexier" SLR camera than the OM-1 (as well as the OM-3). In the new digital SLR E-410, I also find out that Olympus appears to try the lead for a "live preview DSLR", which means that you can use the LCD to look at the object before you push the shutter button. I think most of other DSLR requires you to look at the eye piece in order to shoot an object. What other DSLR has this capabilities? I heard Fuji Pro S3 has similar feature. Any others? and will there be other camera manufacturers to follow this trend? Canon 20Da, the astronomy version. |
#5
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Using LCD screen to shoot photos in DSLR
The usefulness of this feature is in the eye of the beholder.
The teeny LCD image does not accurately convey whether highlights hold detail, shadow detail etc. The little screen does not accurately convey vignetting or other edge effects. In truth, even histograms are not all that useful apart from relatively flatly lit scenes because they do not convey information about what image information at the extremes will hold adequate detail. The image preview is not all that accurate compared to a final jpeg and has no relationship to what the raw data holds. Live preview is not as useful as image stabiliation built into the camera. Here Olympus was a leader but their stabilization is reportedly quite anemic in the 510, about one stop. |
#6
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Using LCD screen to shoot photos in DSLR
On Jul 21, 11:35 am, "babaloo" wrote:
The usefulness of this feature is in the eye of the beholder. The teeny LCD image does not accurately convey whether highlights hold detail, shadow detail etc. I think the cameras have both highlight and shadow alert displays that show you the result of the exposure setting on the scene. |
#7
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Using LCD screen to shoot photos in DSLR
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#8
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Using LCD screen to shoot photos in DSLR
On Jul 21, 8:20 pm, "Roger N. Clark (change username to rnclark)"
wrote: "Live preview" is a marketing ploy that is exactly the opposite of what it really does. The time to read data off the sensor and display it on an LCD should actually be called "Delayed preview." The only true live preview is the the optical view a DSLR gives, delayed only by the speed of light. Sports and wildlife action photographers use optical true live preview of DSLRs. To degrade to LCD "live preview" would result in many missed images. Well I'd love to have a swiveling LCD which could show a real-time image through the lens (or "slightly delayed", if you prefer). It would be extremely useful for shots from awkward angles, macro etc. If it's slow, that's fine with me, for these purposes (I prefer an optical viewfinder for most other things). I have a compact (minolta z3) which has what looks like 60fps refresh rate in bright light, so it can't be that hard to speed up the preview. And I have to say, I've never missed a single image due to the delay of the preview with that camera (although I've missed loads because of its AF, and get extremely irritated in low light when its refresh rate drops-I really can't stand anything being slower than my reaction time). But I don't shoot sports or anything like that. |
#9
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Using LCD screen to shoot photos in DSLR
X-Man wrote:
On Sat, 21 Jul 2007 10:20:49 -0600, "Roger N. Clark (change username to rnclark)" wrote: "Live preview" is a marketing ploy that is exactly the opposite of what it really does. The time to read data off the sensor and display it on an LCD should actually be called "Delayed preview." The only true live preview is the the optical view a DSLR gives, delayed only by the speed of light. Sports and wildlife action photographers use optical true live preview of DSLRs. To degrade to LCD "live preview" would result in many missed images. Roger Only untalented snap-shot hacks would not learn to use their tools properly. Missing shots and then blaming it on the camera. They're the very same people that have to spend $5,000 on photography equipment so the cost will magically turn them into a photographer. They can never seem to spend enough to try become a photographer, always wondering why their camera is never good enough to make them into one. I fail to see where a preview-lag that matches the same speed as the shutter would in any way make someone miss a photo. The only thing you can blame is the speed of your own neuron activity, the ones mostly between your ears. Perhaps this is why you keep believing this, look at what is telling you these erroneous things. Your own mind trying to compensate for its own drastic and self-crippling limitations. This troll has demonstrated it knows nothing about the delays in various cameras, nor why professional wildlife and sports photographers use high end DSLRs. Cameras with "live preview" must work in a fast, lower grade video image mode to get data off the sensor. These cameras typically use this video rate to autofocus, so when you press the shutter button, the camera must hunt for the best focus limited by the video rates from the chip. Once focus is achieved, the video mode is stopped, the pixels electronically "erased" and mode changed to acquire a full resolution image. Then the shutter is opened (mechanical or electronic). During this time, the subject, when imaging action, has likely moved and the focus is now off. In DSLRs, separate AF sensors monitor and track focus when the mirror is down while you look at a true live preview: the optical viewfinder. The system tracks focus on moving subjects and when you press the shutter button, the focus position is predicted for the time the shutter actually opens, including calibrated and known delays of raising the mirror. The time to raise the mirror and expose the sensor in fast DSLRs (about 50 to 60 milliseconds) is small in comparison to the time to stop video feed, prep the sensor and expose the sensor in a "live preview" camera. Roger |
#10
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Using LCD screen to shoot photos in DSLR
acl wrote:
On Jul 21, 8:20 pm, "Roger N. Clark (change username to rnclark)" wrote: "Live preview" is a marketing ploy that is exactly the opposite of what it really does. The time to read data off the sensor and display it on an LCD should actually be called "Delayed preview." The only true live preview is the the optical view a DSLR gives, delayed only by the speed of light. Sports and wildlife action photographers use optical true live preview of DSLRs. To degrade to LCD "live preview" would result in many missed images. Well I'd love to have a swiveling LCD which could show a real-time image through the lens (or "slightly delayed", if you prefer). On Canon DSLRs (and SLRs) you can buy a right-angle finder for about $180. It swivels to any angle, and even magnifies the view. I assume other manufacturers have similar devices. If you are in a lab/studio environment, you could also add a web cam and hook it up to a computer for remote viewing. It would be extremely useful for shots from awkward angles, macro etc. If it's slow, that's fine with me, for these purposes (I prefer an optical viewfinder for most other things). I have a compact (minolta z3) which has what looks like 60fps refresh rate in bright light, so it can't be that hard to speed up the preview. And I have to say, I've never missed a single image due to the delay of the preview with that camera (although I've missed loads because of its AF, and get extremely irritated in low light when its refresh rate drops-I really can't stand anything being slower than my reaction time). But I don't shoot sports or anything like that. |
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