I had the same thought, but you expressed it with much more finesse!
Jim Nichols
Tullahoma, TN USA
----- Original Message -----
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Tuesday, August 17, 2010 6:23 PM
Subject: Re: [OM] [OT] Why?
> Probably taken with a kit lens that was wide open at f/4.9 at 78mm. It
> appears to me that the shot was taken in heavy shade. If the ISO is
> overspecified it's probably only by one stop. The shot was taken at
> 1/250. At ISO 800 it could have been at 1/125 which is about as low as
> you'd want to go on a small sensor camera at 78mm.
>
> Do you recall the old 35mm rule of thumb that to counteract camera shake
> you shouldn't use a shutter speed slower than the reciprocal of the
> focal length? For small sensor cameras you need to modify that rule by
> the crop factor. For Canon that's 1.6 which would yield 1/78x1.6 =
> 1/124.8. Can't get much closer to 1/125 than that. And, of course,
> that's the minimum. To guarantee a sharp image the photog should use a
> faster speed... like 1/250 which is what was done here. Of course, the
> lens might have had IS... but probably not.
>
> It's a pretty small image so it's hard to tell but it does look pretty
> good for ISO 1600 on an APS-C size sensor.
>
> Chuck Norcutt
>
>
> Willie Wonka wrote:
>> Why would one choose to use ISO 1600 for this particular shot:
>>
>> http://www.bikeexif.com/honda-cb750-2
>>
>> Best
>>
>> Boris
>>
>>
>>
>>
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