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#1
June 21st 08, 01:35 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
Here is an interesting article by Dave Etchells:
http://www.slrgear.com/articles/focus/focus.htm I found it interesting that according to him manual focus through the viewfinder is not precise enough, while manual focus through live preview on an LCD screen delivers the best results. -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site 
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#2
June 21st 08, 02:29 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
"Alfred Molon" wrote in message
... Here is an interesting article by Dave Etchells: http://www.slrgear.com/articles/focus/focus.htm I found it interesting that according to him manual focus through the viewfinder is not precise enough, while manual focus through live preview on an LCD screen delivers the best results. -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site Indeed, an excellent read.
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#3
June 21st 08, 04:19 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
In message , Alfred Molon
writes Here is an interesting article by Dave Etchells: http://www.slrgear.com/articles/focus/focus.htm I found it interesting that according to him manual focus through the viewfinder is not precise enough, while manual focus through live preview on an LCD screen delivers the best results. The point about testing the lens and not the camera is good. I use the DXO RAW converter because DXO is also a lens test house and the DXO RAW software can compensate for lenses and bodies. They have a whole list of camera and lens modules and it automatically loads the appropriate one(s) for each shot. -- \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ \/\/\/\/\ Chris Hills Staffs England /\/\/\/\/ \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
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#4
June 21st 08, 04:37 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
Matt Ion wrote:
Alfred Molon wrote: Here is an interesting article by Dave Etchells: http://www.slrgear.com/articles/focus/focus.htm I found it interesting that according to him manual focus through the viewfinder is not precise enough, while manual focus through live preview on an LCD screen delivers the best results. However did I survive with my old Minolta X-700?? As with any tool, by gaining experience in how best to use it. And stopping down a little probably helped..... G David
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#5
June 21st 08, 05:38 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
In article , Matt Ion says...
However did I survive with my old Minolta X-700?? What do you think of the Tamron 70-300? I'm looking for a 70-300 lens suitable for a Pentax K20D or Sony 350. -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site
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#6
June 21st 08, 05:38 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
In article 122465f9-3e52-4411-b3d6-4f240fe66274
@x35g2000hsb.googlegroups.com, Don Stauffer in Minnesota says... Admittedly an LCD screen is far, far from resolution needed to judge focus. But you can zoom down to pixel level and precisely adjust focus. -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site
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#7
June 21st 08, 06:19 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
Alfred Molon wrote:
Here is an interesting article by Dave Etchells: http://www.slrgear.com/articles/focus/focus.htm I found it interesting that according to him manual focus through the viewfinder is not precise enough, while manual focus through live preview on an LCD screen delivers the best results. Live view (on a D300, only one I've fiddled with) is not full magnification. Post-view on the LCD of a D200 is as good as a computer monitor (not true for the D70), but of course that takes trial & error. Also they admit not attempting manual focus with a split prism viewfinder focusing aid. Anyways yes, live view is the most accurate for studio conditions but awkward for hand held shooting. -- Paul Furman www.edgehill.net www.baynatives.com all google groups messages filtered due to spam
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#8
June 21st 08, 06:20 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
Alfred Molon wrote:
In article 122465f9-3e52-4411-b3d6-4f240fe66274 @x35g2000hsb.googlegroups.com, Don Stauffer in Minnesota says... Admittedly an LCD screen is far, far from resolution needed to judge focus. But you can zoom down to pixel level and precisely adjust focus. Not quite that close. From what I've seen the D300 zooms closer after taking the shot than in live view. -- Paul Furman www.edgehill.net www.baynatives.com all google groups messages filtered due to spam
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#9
June 21st 08, 09:54 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
In article , Paul Furman
says... Alfred Molon wrote: In article 122465f9-3e52-4411-b3d6-4f240fe66274 @x35g2000hsb.googlegroups.com, Don Stauffer in Minnesota says... Admittedly an LCD screen is far, far from resolution needed to judge focus. But you can zoom down to pixel level and precisely adjust focus. Not quite that close. From what I've seen the D300 zooms closer after taking the shot than in live view. That depends on the camera. I think the K20D allows you to zoom down to pixel level. -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site
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#10
June 21st 08, 09:56 PM
posted to rec.photo.digital
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Focus Fallibility: Lens Test Fallacies
In article , TRoss says...
And if you read it again you'll find that the LCD screen was also inadequte for their needs. They actually got the best results with the LCD screen, better than with the camera AF and far better than manual focus through the OVF. -- Alfred Molon ------------------------------ Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site
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