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From: SMS on 2 Jul 2010 22:23 On 02/07/10 7:49 AM, whisky-dave wrote: <snip> > I'm wondering when the first camera with pre-shutter trigger will be > released > as standard like auto focus is today. Casio has something like that, maybe others do too. Essentially it's capturing frames even before you fully depress the button. You get a bunch of frames before and after you press the button and can select which ones you want to keep. Of course it's got some serious flaws, but it's designed to try to work around the slow CDAF of a P&S.
From: John Navas on 2 Jul 2010 22:24 On Fri, 02 Jul 2010 19:23:15 -0700, in <4c2e9f09$0$22105$742ec2ed(a)news.sonic.net>, SMS <scharf.steven(a)geemail.com> wrote: >On 02/07/10 7:49 AM, whisky-dave wrote: > ><snip> > >> I'm wondering when the first camera with pre-shutter trigger will be >> released >> as standard like auto focus is today. > >Casio has something like that, maybe others do too. Essentially it's >capturing frames even before you fully depress the button. You get a >bunch of frames before and after you press the button and can select >which ones you want to keep. Of course it's got some serious flaws, but >it's designed to try to work around the slow CDAF of a P&S. No, because the speed of CDAF isn't an issue. The issue is [drum roll] human reaction time, which is much slower than CDAF time. -- Best regards, John "It is better to sit in silence and appear ignorant, than to open your mouth and remove all doubt." -Mark Twain "A little learning is a dangerous thing." -Alexander Pope "Being ignorant is not so much a shame, as being unwilling to learn." -Benjamin Franklin
From: Paul Furman on 3 Jul 2010 00:26 whisky-dave wrote: > "SMS"<scharf.steven(a)geemail.com> wrote in message > news:4c2c86a2$0$22165$742ec2ed(a)news.sonic.net... >> On 01/07/10 12:37 AM, Ray Fischer wrote: >> >>> In other words, a "shutter lag" of zero wouldn't help in the slightest >>> if the camera took 800msec to focus and save the picture. >> >> Surely you realize that "shutter lag" is often used to describe the sum of >> AF lag and shutter lag. In reality it's the contrast detect focusing of >> the P&S that causes the AF lag, and while it's not as bad as it was in the >> past, it still is much slower than phase-detect AF, especially in >> challenging situations. >> > > I've always connsider shutter lag as shutter lag in that it's the differnce > in time between activate the shutter button (in a sense that's the picture > you wish to take) compared to the time it takes the electronics to open the > shutter and store the image in it's buffer. > Focausing has nothin gto do with shutter lag. Startup time matters; to extend the lens. Focus time matters unless you shoot manual focus. I did manual focus for closeup work when I used a P&S. Rarely otherwise though if you had a plan it could work. >> It's of little consequence when shooting landscapes in good light. It's of >> major concern when photographing children or wild life, or when shooting >> in low light. > > Well in all these cases I think focus is a seperate issue, as is framing > and decision making. > > >
From: John Navas on 3 Jul 2010 00:59 On Fri, 02 Jul 2010 21:26:04 -0700, in <zuudnQE_gp58JrPRnZ2dnUVZ_q-dnZ2d(a)giganews.com>, Paul Furman <paul-@-edgehill.net> wrote: >whisky-dave wrote: >> I've always connsider shutter lag as shutter lag in that it's the differnce >> in time between activate the shutter button (in a sense that's the picture >> you wish to take) compared to the time it takes the electronics to open the >> shutter and store the image in it's buffer. >> Focausing has nothin gto do with shutter lag. > >Startup time matters; to extend the lens. It does. Likewise the time to drag a big dSLR out of the bag and get it ready to shoot. And I normally keep the lens extended when I'm on shoot. >Focus time matters unless you >shoot manual focus. Or half-press prefocus. Or Continuous Focus. Or Subject Follow Focus. >I did manual focus for closeup work when I used a >P&S. Rarely otherwise though if you had a plan it could work. Those three options work quite well. -- Best regards, John Buying a dSLR doesn't make you a photographer, it makes you a dSLR owner. "The single most important component of a camera is the twelve inches behind it." -Ansel Adams
From: nospam on 3 Jul 2010 01:26
In article <ikgt265pi0e0r6jnomf75qgf5b8aa63dkj(a)4ax.com>, John Navas <jncl1(a)navasgroup.com> wrote: > >> I've always connsider shutter lag as shutter lag in that it's the differnce > >> in time between activate the shutter button (in a sense that's the picture > >> you wish to take) compared to the time it takes the electronics to open the > >> shutter and store the image in it's buffer. > >> Focausing has nothin gto do with shutter lag. > > > >Startup time matters; to extend the lens. > > It does. Likewise the time to drag a big dSLR out of the bag and get it > ready to shoot. And I normally keep the lens extended when I'm on > shoot. unless the dslr isn't in a bag and the compact is in a pocket. if someone is on a shoot, they'd likely have the dslr out and ready. are you that threatened that you must resort to contrived scenarios? |