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

[imagist3 at mac.com (George Lottermoser)]

Thanks Jim.
And I don't think the smaller format sensors
defy these basic laws of physics, optics, and geometry.
Movement of camera, subject, or both,
across that rectangle will be recorded.

The distance of that movement,
within a given slice of time,
in proportion to the overall frame size,
will determine how that movement appears
in the still photograph.

Developing a good feel
for how these laws work within the craft of photography
allows us to control them as variables:
<http://www.imagist.com/blog/?p=2137>

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 11:54 AM, Jim Nichols wrote:

> 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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