If you're not mounted on a tripod for close-up work you may very well
want the camera to refocus to compensate for your involuntary movements.
But if the camera is on a tripod you may wish to critically choose
where to focus in order to make best use of limited depth of field.
Allowing the camera to decide where that is may be less than optimal.
Chuck Norcutt
On 7/23/2011 8:14 AM, Brian Swale wrote:
> Chuck wrote:
>> If you are experiencing long shutter delays the most likely culprit is
>> autofocus. Either switch to manual focus or customize the camera's
>> setting to use the AEL/AFL button to focus the camera (See page 92 of the
>> E-3 user's manual). Then the shutter button will not cause focusing. It
>> will only control locking the exposure when it reaches half press.
>>
>> For a professional level camera it doesn't make much sense to have
>> exposure and focus locked together with the press of the shutter button.
>> Refocusing on every press of the shutter button simply isn't necessary
>> (we didn't do it on our OMs) and only adds unnecessary delay until the
>> camera is ready to shoot.
>>
>> Recomputing exposure on every press of the shutter button is rarely
>> necessary either. However, the only way to defeat that is to switch to
>> manual exposure control.
>>
>> Try it, you'll like it. But you'll no doubt miss a few shots in the
>> beginning when you fail to remember that you must first focus the camera
>> independently of the shutter release.
>
> Thanks for the info. It never crossed my mind to do it that way.
>
> Most of one kind of the subjects I capture will not move through all eternity,
> so it is not a problem. Others; especially hand-held macro or closeup work
> (yes I know I should always use a tripod but I don't always); well I'm happy
> if
> it refocuses. I don't necessarily stand perfectly stationary even though it is
> my goal.
>
> It is (as stated) rare that I am faced with the problem that I had. however, I
> will take the hint and look through the manual. I DO know where it is !!
>
> Thanks for the info
>
> Brian Swale.
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