factor schmactor. a lens is a lens

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What is this factor nonsense.
When 35mm was becoming popular nobody said.. well it's a 90mm lens but that's a factor of
2 X because it's a wide angle on a 4X5 but it's a longish lens for 35mm. or this is a 90mm but it's a factor of 1.5 for your mamiya so it's like a150mm on a 4X5..
How ridiculous. I have to drill my students out of this stupidity. It's useful to know , if you're experienced with 35mm, how the angle of view changes but why institutionalize it.
Imagine a student who has never owned a 35mm camera asking me what factor an old 35mm lens would be on his camera. It's all more wool over the eyes by camera manufacturers.
A 35mm lens is a 35mm lens on whatever camera you use. No factors necessary.
If your 35mm lens is not wide enough buy a 24mm and if your 135mm is not long enough then but a 200mm.
 
My rant...

 
Herschel Mair
Head of the Department of Photography,
Higher College of Technology
Muscat
Sultanate of Oman
Adobe Certified instructor
 
+ (986) 99899 673
 
www.herschelmair.com


----- Original Message ----
From: karl shah-jenner <shahjen@xxxxxxxxxxxx>
To: List for Photo/Imaging Educators - Professionals - Students <photoforum@xxxxxxxxxxxxxxxxxx>
Sent: Saturday, June 2, 2007 7:52:48 AM
Subject: Re: Sensor Cell Size? ( wasNikon Proud?)

http://www.kenrockwell.com/tech/mpmyth.htm


k



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