The hotshoe level gives a good indication of horizontal in one axis even
when the other axis is far from level: example you're pointed up at the top
of a tall building and want the left-right axis horizontal.
The hotshoe level also lets you flip to portrait orientation and then level
one or two axis.
The bull's-eye level could give a reasonable single axis level indication
when the other axis was not level if it had crosshairs engraved/painted on
it.
The long focusing rails are often used with L-quick release plates. Both
landscape and portrait use often keeps the focusing rail level left to
right.
A quick check of half a dozen OM's with permanently attached hot shoe found
only one that was not level. Checking two OM2 cameras with a removable shoe
showed one very accurate the other off by perhaps a degree or two.
The hot shoe level seems to be priced high for a bit of plastic but it's
worth $30 to me. If I didn't use a tripod regularly it wouldn't be.
-jeff
----- Original Message -----
From: "Mike" <watershed@xxxxxxxxxxxxxxx>
>
> Rather than mess with one of those overpriced IMHO hotshoe levels of
> dubious value why not just use something like this mounted on a flat
> plate slightly larger than the base of the camera?
>
> http://www.leevalley.com/wood/page.aspx?c=2&cat=1,43513&p=51109
>
> The plate could be mounted directly to the camera's base or inserted
> between the camera and tripod head.
>
> Simple, cheap and more accurate.
>
> Mike
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