Well put Jens. A.
On 15/8/04 11:22 am, "Jens Bladt" <[EMAIL PROTECTED]> wrote: > A 50mm is still a 50mm. > What is means is, that changing the format from 24x36 to 16x24 (APS size) > will result in an (narrower) angle of view, similar to that of a 75mm lens > on a 35mm camera. > Digital cameras of many formats are now so commonly used, that it doesn't > make sense anymore to record the focal length used as equal to a 35mm > format. If this is done, it should be clearly stated. > > I find i confusing, however, that I have to look up the sensor size of the > particalar camera used, to get an understanding of the optics used for a > photograph. I don't understand why the photo industry does not shift to > stating the angle of wiew in the recorded EXIF information instead of, or as > a supplement to the focal length information. > all the best > > Jens Bladt > mailto:[EMAIL PROTECTED] > http://hjem.get2net.dk/bladt > > > -----Oprindelig meddelelse----- > Fra: Antonio [mailto:[EMAIL PROTECTED] > Sendt: 15. august 2004 08:52 > Til: [EMAIL PROTECTED] > Emne: Re: Lessons fro a pro > > > Still spinning it I see Willliam. > > Nobody has said that a 50mm lens is really a 75mm lens. Do you understand > English? > > What they are saying is that a 50mm lens "becomes" a 70mm lens when placed > on a digital camera. I.e. Its angle of view decreases to that of a 70mm > lens. > > Here is a dictionary definition: > \Be*come"\, v. i. 1. To pass from one state to another; to enter into some > state or condition, by a change from another state, or by assuming or > receiving new properties or qualities, additional matter, or a new > character. > > Get it now? The AOV (its state) of a 50mm lens changes to that of a 70mm > lens, when used with a smaller sensor (i.e when it receives new properties > or qualities....). Shorthand, 50mm becomes 70mm. > > > Other accepted English examples. > > 1. �100 pounds becomes 160 Euros. > (again no actual change to the �100, don�t read it literally) > > 2. 50 degrees Celsius becomes xx degrees Fahrenheit. > > Antonio > > > On 15/8/04 1:46 am, "William Robb" <[EMAIL PROTECTED]> wrote: > >> This is the webpage to learn from for all you guys who insist on >> thinking your 50mm lens is really a 75mm lens. >> >> http://www.proshooter.homestead.com/untitled1.html >> >> William Robb >> >> > > > >
