[Leica] USAF Lens Resolution Chart

[Frank.Dernie at btinternet.com (Frank Dernie)]

The problem is that either a test chart or newspaper on a wall  
exaggerate the importance of lens flatness of field to a far greater  
extent than it should for a general purpose lens. For a macro lens  
this may be vital, and speed for one thing, is sacrificed for  
flatness of field. I take 3D objects so part of my image will be OOF  
when using wide apertures. As long as the centre is correct to the  
rangefinder it is not reasonable to ask for more in a lens for a this  
type of camera IMHO.
Frank

On 7 Apr, 2007, at 20:25, Photo Phreak wrote:

> Tape several pages of newspaper to a wall and shoot from different  
> distances and apertures.
>
> Jeffery Smith <jsmith342@cox.net> wrote:  For now, my lens  
> resolution chart is the electric meter on the side of my
> house. At some point, I need to upgrade to something actually made for
> testing lens resolutions. ;-)
>
> Jeffery Smith
> New Orleans, LA
> http://www.400tx.com
> http://400tx.blogspot.com/
>
>
>
> -----Original Message-----
> From: lug-bounces+jsmith342=cox.net@leica-users.org
> [mailto:lug-bounces+jsmith342=cox.net@leica-users.org] On Behalf Of  
> Photo
> Phreak
> Sent: Sunday, April 01, 2007 4:56 PM
> To: Leica Users Group
> Subject: Re: [Leica] USAF Lens Resolution Chart
>
>
> Modern Photography used to sell them. Probably some out there  
> somewhere. I
> used to just ape newspaper to the wall and floodlight it.
>
> Jeffery Smith wrote: Can these be purchased
> commercially?
>
> Jeffery Smith
> New Orleans, LA
> http://www.400tx.com
> http://400tx.blogspot.com/
>
>
>
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