[Leica] OT: Another maybe not so stupid GH1 question

[jhnichols at lighttube.net (Jim Nichols)]

Very good analysis, George!

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "George Lottermoser" <imagist3 at mac.com>
To: "Leica Users Group" <lug at leica-users.org>
Sent: Friday, March 26, 2010 9:36 AM
Subject: Re: [Leica] OT: Another maybe not so stupid GH1 question


> It really is not that complex Vince.
> Imagine an 8x10 view camera with a "normal" 300mm lens.
> It sits on a hill top overlooking a valley.
> You'll see a relatively "normal" view on the ground glass.
> Replace the 8x10 back with a 5x7 back.
> You'll see a significantly narrower field of view
> Replace the 5x7 back with a 4x5 back;
> even narrower.
> Replace the 4x5 back with a 2 1/4 x 3 1/4 back.
> and you're reaching into a very narrow field of view.
> Hang a 35 mm camera on the back
> and you're focusing on a bird that you didn't even notice
> when using the 8x10 back.
> 
> With each of those changes in format,
> using the same lens and distance from subject,
> camera movement will have an ever increasing effect
> because the movement will show as a greater proportion of the format.
> 
> 
> Regards,
> George Lottermoser
> george at imagist.com
> http://www.imagist.com
> http://www.imagist.com/blog
> http://www.linkedin.com/in/imagist
> 
> On Mar 26, 2010, at 3:13 AM, Vince Passaro wrote:
> 
>> nobody really understands this crop
>> factor thing in a rational way:
> 
> 
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