Archived posting to the Leica Users Group, 2012/09/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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