[LRflex] Re: Focal Plane Shutter Distortion.
- From: "Aram Langhans" <leica_r8@xxxxxxxxxxx>
- To: <leicareflex@xxxxxxxxxxxxx>
- Date: Tue, 2 Feb 2010 11:04:48 -0800
That does not make it any less interesting. Did I mention great picture and
series?
Aram
--------------------------------------------------
From: "David Young" <dsy@xxxxxxxxxxxxxxx>
Sent: Tuesday, February 02, 2010 10:55 AM
To: <leicareflex@xxxxxxxxxxxxx>
Subject: [LRflex] Re: Focal Plane Shutter Distortion.
> At 2/2/2010, you wrote:
>>You sparked a curious question in my mind. The retired science teacher
>>part
>>of me came back to life. A bit of math. Traveling at 115 kph, the bike
>>would move about 3 cm in 1/1000 of a second. Since the wheel occupies
>>maybe
>>1/4 of the vertical frame (vertical shutter) it would move about 0.75 cm
>>during the exposure. I don't think 0.75 cm would make a detectable
>>lengthening of the wheel, do you?
>>
>>This in no way detracts from the great shot, just, in my mind, casts doubt
>>as to the distortion effect seen.
>>
>>Aram
>
>
> Hi Aram!
>
> OK... so rain on my parade! ;-)
>
> I thought I might be on to something interesting ... but, after
> looking at your math, you are right. I concede... it's the angle.
>
> Cheers!
>
> ---
> David Young
> Logan Lake, Canada.
>
> Wildlife Photos: www.furnfeather.net
> Personal Website: www.main.furnfeather.net
> A micro-finance lender though http://www.kiva.org
>
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