Archived posting to the Leica Users Group, 2010/08/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]George - Well, I gave myself a big dope-slap on the way into work this morning. Sorry to send you off on a wild goose chase. :-) Regards, Dick On Aug 10, 2010, at 10:28 AM, George Lottermoser wrote: > Thanks for the reevaluation Dick. > Clears my aging mind. > > You had me questioning my eye for digital artifacts > whether simple noise, chromatic aberrations > or other digi-things exaggerated by over sharpening, > enhancing contrast, etc. > > I went out on an unsuccessful search re: "atmospheric refraction" > to find anything remotely resembling what I saw in the photo. > > Regards, > George Lottermoser > george at imagist.com > http://www.imagist.com > http://www.imagist.com/blog > http://www.linkedin.com/in/imagist > > > > > > On Aug 10, 2010, at 8:43 AM, Richard Taylor wrote: > >> George - I spoke too quickly yesterday. You are right, the grain is >> good, old-fashioned, detector noise. There are refraction effects in >> this picture, you can see it in the slightly wavy lines of the distant >> buildings and boats, but that is not the cause of that grain. >> >> It's as bad as it is because I built contrast significantly to make the >> picture more interesting. That really aggravated the quite-low ISO 400 >> noise in the D300. The original image is so flat it looks like blue >> ghost on an aluminum sheet. >> >> I'll go back to this later today and see if I can improve it. >> >> Thanks for calling it to my attention. >> >> Regards, >> >> Dick >> >> >> >> On Aug 09, 2010, at 2:43 PM, George Lottermoser wrote: >> >>> Really? >>> I've never seen this uniform pattern before. >>> Amazing >>> >>> Regards, >>> George Lottermoser >>> george at imagist.com >>> http://www.imagist.com >>> http://www.imagist.com/blog >>> http://www.linkedin.com/in/imagist >>> >>> >>> >>> >>> >>> On Aug 9, 2010, at 1:19 PM, Richard Taylor wrote: >>> >>>> The "noise" is atmospheric refraction. Can't do much about that. >>>> >>>> Regards, >>>> >>>> Dick >>>> >>>> >>>> >>>> On Aug 09, 2010, at 2:04 PM, George Lottermoser wrote: >>>> >>>>> I find the "weight" of the water and POV >>>>> very compelling (in the tiny image). >>>>> >>>>> and the "noise" extremely unpleasant >>>>> and totally destroying the effects mentioned above >>>>> when viewing the larger image >>>>> >>>>> which I don't understand. >>>>> I thought the d300 held the noiseless record to date. >>>>> >>>>> Regards, >>>>> George Lottermoser >>>>> george at imagist.com >>>>> http://www.imagist.com >>>>> http://www.imagist.com/blog >>>>> http://www.linkedin.com/in/imagist >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> On Aug 9, 2010, at 12:46 PM, Richard Taylor wrote: >>>>> >>>>>> Last Saturday we had one of our rare super visibility days on the >>>>>> water and a knife-edge horizon. Usually, distant views show >>>>>> vertical smearing due to refraction. >>>>>> >>>>>> The was taken on Vineyard Sound from a point just off Woods Hole. >>>>>> The boats are at the entrance to Vineyard Haven on Martha's Vineyard. >>>>>> East Chop is the point of land to the left; West Chop the one to the >>>>>> right. This a 100% crop with the 70-200 zoom at 200 mm from about >>>>>> 3.6 nautical miles off West Chop. The horizon is about 2 miles away >>>>>> from our position. >>>>>> >>>>>> The scene was very low contrast and the autofocus on the D300 had a >>>>>> hard time locking up. Manual focus wasn't much better since the lens >>>>>> has no infinity stop. Only two shots out of ten were properly >>>>>> focused. >>>>>> >>>>>> http://gallery.leica-users.org/v/rtaylor/PICKS/2010_boating/300_8509.jpg.html >>>>>> or >>>>>> http://tinyurl.com/2ctkot6 >>>>>> >>>>>> C&C always welcome. >>>>>> >>>>>> Regards, >>>>>> >>>>>> Dick >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> 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 >> >> >> _______________________________________________ >> 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