ISO and actual sensitivity in DSLR's (D70, *istD, 20D, S3...)
in [Digital Cameras]
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From: Alan Browne on 24 Mar 2005 22:59 We've seen the occasional postings about the ISO setting and the actual sensitivity. I picked up Casseur D'Images (No. 271, March 2005) and among other things they did tests on a variety of DSLR's and one ZLR. (p. 169) They rounded the results when close to the standard 1/3. But where a little less clear cut, they put a +/- to indicate not quite in the 1/3 zone. They describe, in punishing detail, the test method, references, math, etc. Unfortunately, the 7D is not part of the grouping, but I'll take sollace in the A200 results. Minolta have long been known for their consistency in metering and exposure. [There is also an article on the S3 and I'll summarize tomorrow] Cheers, Alan. D70: Setting: 200 400 800 1600 Actual: 160 320 640 1250 A200 (Minolta ZLR): Setting: 50 100 200 400 800 Actual: 50+ 100 200 400 800 *istD: Setting: 200 400 800 1600 3200 Actual: 250 500 1250- 2000 4000- 20D: Setting: 100 200 400 800 1600 3200 Actual: 125 250 500 1000 2000 4000 S3: Setting: 100 160 200 400 800 1600 Actual: 80 160 160+ 320 640+ 1250 1D Mk II Setting: (L)50 100 200 400 800 1600 (H) 3200 Actual 64 160 320 640 1250 2500 4000 -- -- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm -- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm -- [SI] gallery & rulz: http://www.pbase.com/shootin -- e-meil: there's no such thing as a FreeLunch.
From: Alan Browne on 24 Mar 2005 23:02 Alan Browne wrote: > I picked up Casseur D'Images (No. 271, March 2005) and among other Chasseur D'Images
From: Pete D on 25 Mar 2005 01:30 And as has been said before, it does not matter one tiny little jot as long as the photos come out right. "Alan Browne" <alan.browne(a)freelunchVideotron.ca> wrote in message news:d202ab$rmr$1(a)inews.gazeta.pl... > > We've seen the occasional postings about the ISO setting and the actual > sensitivity. > > I picked up Casseur D'Images (No. 271, March 2005) and among other things > they did tests on a variety of DSLR's and one ZLR. (p. 169) > > They rounded the results when close to the standard 1/3. But where a > little less clear cut, they put a +/- to indicate not quite in the 1/3 > zone. > > They describe, in punishing detail, the test method, references, math, > etc. Unfortunately, the 7D is not part of the grouping, but I'll take > sollace in the A200 results. Minolta have long been known for their > consistency in metering and exposure. > > [There is also an article on the S3 and I'll summarize tomorrow] > > Cheers, > Alan. > > D70: > Setting: 200 400 800 1600 > Actual: 160 320 640 1250 > > > A200 (Minolta ZLR): > Setting: 50 100 200 400 800 > Actual: 50+ 100 200 400 800 > > > *istD: > Setting: 200 400 800 1600 3200 > Actual: 250 500 1250- 2000 4000- > > > 20D: > Setting: 100 200 400 800 1600 3200 > Actual: 125 250 500 1000 2000 4000 > > > S3: > Setting: 100 160 200 400 800 1600 > Actual: 80 160 160+ 320 640+ 1250 > > > 1D Mk II > Setting: (L)50 100 200 400 800 1600 (H) 3200 > Actual 64 160 320 640 1250 2500 4000 > > > -- > -- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm > -- r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm > -- [SI] gallery & rulz: http://www.pbase.com/shootin > -- e-meil: there's no such thing as a FreeLunch.
From: Kevin McMurtrie on 25 Mar 2005 03:26 In article <MdO0e.11056$C7.1258(a)news-server.bigpond.net.au>, "Pete D" <no(a)email.com> wrote: > And as has been said before, it does not matter one tiny little jot as long > as the photos come out right. > The table shouldn't be interpreted as good or bad, but informational. Built-in exposure meters can't be used for all conditions.
From: Roland Karlsson on 25 Mar 2005 05:54
"Pete D" <no(a)email.com> wrote in news:MdO0e.11056$C7.1258(a)news-server.bigpond.net.au: > And as has been said before, it does not matter one tiny little jot as > long as the photos come out right. You are not of the old school I see :) It does matter. - if you use an external meter. - when comparing the sensitivity of camera systems. - when using external flash. - etc But - if you just take pictures and like them - then the technicalities behind the making of the photo is of course uninteresting. But - it does matter - even if you don't care :) /Roland |