Archived posting to the Leica Users Group, 1999/12/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]- --=====================_94670468==_.ALT Content-Type: text/plain; charset="us-ascii" So I guess you are correct, and all of the photographic scholars, photographic texts, photographic schools, photographic lens manufacturers, and all optical engineers, are wrong, and have been wrong for the past 150 years... What a blow to the industry. Not!!! Jim At 10:51 PM 12/1/99 -0500, elisardo louzan wrote: > > > Photographic myths are hard to die. > > "The longer the focal length, the more depth of field one has in front of the > target subject and the less you have behind the subject. Also, the longer > the lens, the less the total depth of field ..." > "Depth of field differences between focal lenghts are greatest for image > sizes smaller than 1:20 and lens openings smaller than f4. When you're > working close or at large apertures, changing the lens focal length has > little effect on depth of field ..." > > "Everythig you know is wrong", Copyright Ctein > PhotoPro September/October 1994 pp 50-51 > > Regards, > > Robert - --=====================_94670468==_.ALT Content-Type: text/html; charset="us-ascii" <html> So I guess you are correct, and all of the photographic scholars, photographic texts, photographic schools, photographic lens manufacturers, and all optical engineers, are wrong, and have been wrong for the past 150 years... What a blow to the industry.<br> <br> Not!!!<br> <br> Jim<br> <br> <br> At 10:51 PM 12/1/99 -0500, elisardo louzan wrote: <br> <blockquote type=cite cite> <br> <font size=2>Photographic myths are hard to die.</font><br> <br> <font size=2>"The longer the focal length, the more depth of field one has in front of the target subject and the less you have behind the subject. Also, the longer the lens, the less the total depth of field ..."</font><br> "Depth of field differences between focal lenghts are greatest for image sizes smaller than 1:20 and lens openings smaller than f4. When you're working close or at large apertures, changing the lens focal length has little effect on depth of field ..."<br> <br> <font size=2>"Everythig you know is wrong", Copyright Ctein </font><br> PhotoPro September/October 1994 pp 50-51<br> <br> <font size=2>Regards,</font><br> <br> <font size=2>Robert</font></blockquote><br> </html> - --=====================_94670468==_.ALT--