Not that it's terribly significant but 3.5 is actually 2/3 stop slower
than 2.8. 1/3 stop is 3.2, 1/2 stop is 3.4.
I'm showing off. :-) Now that I've got a digital read-out for shutter
speeds, aperture and ISO all in 1/3 stop increments I'm beginning to
memorize all the intermediate settings. But I did have to calculate the
1/2 stop increment. Actually, the precise value is 3.43.
Chuck Norcutt
Bao C. Ha wrote:
> Hi Andrew,
>
> Not really!
>
> The 14-45mm is f/3.5-5.6. The 14-54mm is f/2.8-3.5. At the widest
> angle, the 14-45 is only a half stop.
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