Archived posting to the Leica Users Group, 2002/04/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Olivier, If the scene you are viewing at full opening is very clear, it is because you are looking at distant objects. Try looking at an angle at close range. for further information, take a look at the depth of field primer written by Jim Brick. It will clarify many points about the subject. You can find it at: http://www.clearsightusa.com/depthofield.html And practice, it will become very easy. Joe - ----- Original Message ----- From: "olivier nguyen" <oliviertnguyen@hotmail.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Monday, April 22, 2002 11:18 AM Subject: Re: [Leica] DEPTH OF FIELD PREVIEW > Hi Joe, > when I press my DOF preview button with lens open all the way, everything > look clear. what is this mean ? and when i start to close the lens down to > let say f5.6 the viewfinder start to look darker and darker. what is it > related to open the lens? I understand that the smaller fstop the more DOF. > I just want to relate this with preview DOF. I will try to see what is > going on tonight with my DOF preview and will throw out more question if i > do'nt understnad and see different. > > Peter Su, Doug, and Joe, > thank you all of you for helping me > Olivier > > > >From: "Joseph Codispoti" <joecodi@clearsightusa.com> > >Reply-To: leica-users@mejac.palo-alto.ca.us > >To: <leica-users@mejac.palo-alto.ca.us> > >Subject: [Leica] DEPTH OF FIELD PREVIEW > >Date: Mon, 22 Apr 2002 11:04:03 -0700 > > > >From olivier nguyen <oliviertnguyen@hotmail.com> > > > > > > I don't uunderstand how to use DOF preview on my nikon FM2n. when i > >press > > > the lever for DOF, I see it deem down in my viewfinder. what is this > >tell > >me ? > > > > > > > > > >Oliver, > > > >In order to *see* the limits of depth of field, you need to train you eye > >to > >look for it. > > > >Try this: > > > >1) Find a suitable scene that will show depth of field easily such as a > >long > >picket fence. > >2) Stand at an angle to the fence. > >3) Set the lens at its maximum opening (choose a standard or medium tele > >lens). > >4) Focus on at a point on the fence about 10 feet away. > >5) If you are at an angle to the fence you will notice that what you > >focused > >on, and very little else, is in focus. > >6) Activate the preview feature and close the lens slowly observing the > >change in depth of field. As you close the lens, more of the fence will > >appear in focus. > >The field will darken as you close the lens, but, with a little practice, > >you will still be able to determine what is in focus and what is not. > > > >Best, > >Joe Codispoti > > > > > > > >-- > >To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > > > > No Archive > > > _________________________________________________________________ > MSN Photos is the easiest way to share and print your photos: > http://photos.msn.com/support/worldwide.aspx > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html