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[OM] Re: Good photography guides

Subject: [OM] Re: Good photography guides
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Wed, 21 Feb 2007 13:02:20 -0500
Broke your own 4/3 rule already.  Better make that 1/400 second for that 
200mm lens.

Chuck Norcutt

Joel Wilcox wrote:

> The length of the lens you are using is critical to your ability to
> get sharp results.  In general, with 35mm photography, your shutter
> speed can usually be the reciprocal of the focal length of your lens.
> For example, if you are shooting a focal length of 100mm, a shutter
> speed of 1/125 sec is "safe."  Since a 4:3 sensor is not the same size
> as a piece of film, it might be wise to double the reciprocal (1/250
> for 100mm, etc.) .  That's just a really good rule always to keep in
> mind.
> 
> Once you have mastered manual mode, you will then understand precisely
> how to use auto mode, which allows you to pick the stop you want and
> then let the camera pick the shutter speed.  S and P modes I simply
> never use, but S mode reverses the relationship of A mode by your
> choosing the shutter speed and allowing the camera to match the stop.
> This is a useful mode for sports and action photography where you
> know, for example, that you want to use 1/250 sec shutter speed with a
> 200mm lens and you're going to be trying to capture a subject running
> in and out of bright light.

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