Archived posting to the Leica Users Group, 2010/08/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hey no problem Dick. I loved learning more about atmospheric refraction. ;~) 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 9:38 AM, Richard Taylor wrote: > 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 > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information