Archived posting to the Leica Users Group, 2008/11/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Philippe, With all respects to you and to Ted, I was not doing scientific research. As an engineer, I understand the separation of variables. I considered your approach. However, I wanted to know if ISO effects would show up in the way I normally shoot photos, which is in Program mode, hand-held, letting the camera make its decisions. For everyday use, I feel comfortable with any of the ISO settings that the Oly provides. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Philippe AMARD" <philippe.amard@tele2.fr> To: "Leica Users Group" <lug@leica-users.org> Sent: Thursday, November 06, 2008 12:43 PM Subject: Re: [Leica] IMG: Autumn View of The Neighborhood > Jim, > (I'd be tempted to say as Ted would ", Jim mon ami ;-) ) > when you experiment with ISO keep the same aperture value - use a tripod > if need be and vary ONLY the shutter speed , else the results include too > many parameters for anyone to judge them from. > A lens does not perform in the same way at different apertures ... Yours > range form ... to ... :-[ > > But I'm sure that the lower the ISO the better the result - even in the > highlights, and this I'd really be curious to have an learned explanation > why ... > > Amiti?s de Metz > Philippe > > > Jim Nichols wrote: > >> Philippe, >> >> You raised a good question. Today, I shot the same bricks at all five >> ISO settings. The differences are subtle. If you look at the white dot >> in the central brick, you can see that it is sharpest at ISO 100, and >> gradually begins to blur as the ISO is increased. Seeing this, I will >> try to make more use of ISO 100, and see if my images improve. >> >> These images were shot RAW, and cropped and resized in Elements 6.0, but >> no adjustments were made to the original images. I was amazed that, side >> by side, the exposures are identical. >> >> http://gallery.leica-users.org/v/OldNick/ISO+100.tif.html >> >> http://gallery.leica-users.org/v/OldNick/ISO+200.tif.html >> >> http://gallery.leica-users.org/v/OldNick/ISO+400.tif.html >> >> http://gallery.leica-users.org/v/OldNick/ISO+800.tif.html >> >> http://gallery.leica-users.org/v/OldNick/ISO+1600.tif.html >> >> Jim Nichols >> Tullahoma, TN USA >> ----- Original Message ----- From: "Philippe AMARD" >> <philippe.amard@tele2.fr> >> To: "Leica Users Group" <lug@leica-users.org> >> Sent: Wednesday, November 05, 2008 1:27 PM >> Subject: Re: [Leica] IMG: Autumn View of The Neighborhood >> >> >>> Beautiful colours Jim. >>> Do you always shoot with so high ISO? >>> >>> Thanks for sharing the season over there. >>> >>> Bien cordialement de MEtz >>> Phx >>> >>> >>> Jim Nichols wrote: >>> >>>> The Autumn colors continue to predominate in the Upper Mid-South, as >>>> elsewhere. This is a morning shot of the neighborhood colors. >>>> >>>> Oly E-510, Zuiko 14-54, ISO 400, RAW, processed in Elements 6.0 >>>> >>>> http://gallery.leica-users.org/v/OldNick/The+Neighborhood.tif.html >>>> >>>> Critiques and comments welcomed. >>>> >>>> Jim Nichols >>>> Tullahoma, TN USA >>>> >>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more information >>>> >>>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >