Archived posting to the Leica Users Group, 2012/09/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Glowing Doughnut bokeh! I always thought I'd rent one for a weekend so I can get some glowing doughnuts in my body of work. Just a few. Mark William Rabiner > From: Ted Grant <tedgrant at shaw.ca> > Reply-To: Leica Users Group <lug at leica-users.org> > Date: Sun, 23 Sep 2012 08:23:30 -0700 > To: Leica Users Group <lug at leica-users.org> > Subject: Re: [Leica] New M/ BOKEH????? > > Naw relax old buddy, no need to cringe I can't throw a brick that far any > longer!!!!!!!!!!! :-) > > However I can say what I thought was the worst out of focus back-grounds > and > it drove me crazy until some drunken off duty cops jumped me after a > football game because they thought I was taking their photos. > > I was, but if they weren't beating-up a couple of rent-a-cop security guys, > I'd not have smashed my Nikon adapted mirror lens to fit my Leica when > three > of them jumped me and beat me on the head with their fists while the camera > and lens were under my body digging into the ground. Lens eventually being > torn out of body mount. > > When the 500mm mirror lens came out I got one right away. Then discovered > all the various sizes and shapes of dinky circles all over the > back-ground........ just drove me crazy because quite often they were so > obvious they took the eyes away from the subject. > > So when it was torn right out of the body lens mount the insurance company > paid me in cash and I bought a Leica lens as I should've done in the first > place. > > In my case that is the only time I was understanding of an "ugly out of > focus background". But never heard the word "bokeh" ever used. > > So I suppose I've experienced bokeh without the fancy name! :-) But it > truly was an ugly effect. > > cheers, > ted.. :-) > > ----- Original Message ----- > From: "Geoff Hopkinson" <hopsternew at gmail.com> > To: "Leica Users Group" <lug at leica-users.org> > Sent: Saturday, September 22, 2012 11:09 PM > Subject: Re: [Leica] New M/ BOKEH????? > > >> Dare I risk the wrath of Dr Ted and comment? >> >> Firstly not everyone uses the same interpretation of bokeh. Some only >> consider what out of focus point highlights look like (including whether >> the discs of light from those are round, their edge characteristics, >> homogeneous, haloed, aperture opening shaped etc. It more generally refers >> to the appearance of all out of focus areas and it is sometimes >> subjectively judged based on the transitions from best focus to out of >> focus. >> >> However the bokeh of any one specific lens is not a fixed value at all. I >> can show quite different examples from the same lens for example >> >> There is an excellent technical article on Depth of Field and Bokeh by >> H.H. >> Nasse of Zeiss available from their camera lens blog (CLN35 is the one you >> want) >> >>> From that article these are factors outside of the focal plane that >> influence bokeh >> >> Picture format >> Focal length >> f-number >> the camera-to-subject distance >> Distance to the background or the foreground >> Shapes and patterns of the subject >> Aperture iris shape >> Aberrations of the lens >> Speed of the lens >> Foreground/background brightness >> Colour >> >> Now I wait trembling for the wrath of the Canadian avenger to descend upon >> my photo-geeking head for this post. >> >> Cheers, >> Geoff >> http://www.pbase.com/hoppyman >> >> _______________________________________________ >> 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