Thanks, Tim. Just what I was looking for. And more. Very helpful.
John
HI100@xxxxxxx wrote:
> Ijpendley@xxxxxxxxxxxxx writes:
>
> << This reminds me. I've seen a chart showing the angles of view of various
> >>
>
> John,
>
> The angle of coverage of both lenses and flashes for OM is on Hans's sif
> webpages. http://www.veluwen.demon.nl/om-sif.htm
>
> Note: as a general rule, the angle of coverage for independent flashes is
> much narrower than that of the most of the camera vendors system flashes. For
> example most of the Sunpak and Vivitatar flashes (without zoom heads) only
> cover 35mm focal length lenses without a diffuser. While the OM covers 24mm
> lernses, a huge area difference. The narrow angle coverage boosts the GN for
> sales hype. Nikon flashes tend to cover 28mm, Contax 25mm. Many Metz
> flashes cover 28mm. This means the Metz handle mount flashes are actually
> substantially more powerful than say the corresponding Sunpak units but with
> prices to match. For some of the lowest cost flashes say the bottom of the
> line Achiever units the angle of coverage is only suitable for 50mm lenses
> but the higher power Achiever flashes have better angle of coverage. Since
> the flash area covered varies as the square of the angle of acceptance of the
> lens you need a lot more power for a wide lens. Read the fine print
> carefullty when buying your flash!
>
> Tim Hughes
> hi100@xxxxxxx
>
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