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 Post subject: focus
PostPosted: Fri Mar 05, 2010 3:08 pm 
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Joined: Mon Jan 18, 2010 3:52 pm
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Location: The Netherlands
Hi all,
In the review of sony's a230 Gordon said something about SAM. In the videoreview you could hear how it focuses. A couple of minutes later, Gordon focusus in LV, and immediatly I heard a beep of autofocus done, or something.
So, now the question: what's the diffrence between the beep (when in live view) and rotating the lens when composing with the optical vf?
Thanks;)

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Mar 05, 2010 3:34 pm 
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Those sounds are not related. The focussing noise the lens makes happens either when you're using LV or composing through the optical viewfinder. It is the sound of the focussing motor moving around glass elements in the lens. The beep sound is merely a confirmation that proper focus has been pulled. When you half-press your shutter-button, the camera will pull focus and let you know that it's ready to take the shot by beeping.

- Bjorn -

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Last edited by Bjorn van Sinttruije on Fri Mar 05, 2010 4:04 pm, edited 1 time in total.

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 Post subject:
PostPosted: Fri Mar 05, 2010 3:59 pm 
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Joined: Mon Jan 18, 2010 3:52 pm
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Location: The Netherlands
Thanks :)
Could you -maybe- explain the diffrence between them? Is the beep after the focussing?

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Mar 05, 2010 7:34 pm 
Ruben123 wrote:
Thanks :)
Is the beep after the focussing?


Yes.

Most photographers turn it off as it's annoying.


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 Post subject:
PostPosted: Fri Mar 12, 2010 4:45 pm 
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Joined: Mon Jan 18, 2010 3:52 pm
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Location: The Netherlands
but, would an dslr, for instance, an 500d kti focus as fast (or faster) as my lumix fz28?

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Mar 12, 2010 5:16 pm 
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Typically, the DSLR should win.
However, unless somebody has both those cameras, or at least tested both of them, it's not possible to compare the focussing speed. Just go out to a store and try a DSLR, bring your current camera and do some tests.

- Bjorn -

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Leica M9-P (my article on Camera Labs) | Leica D-Lux 5 | 50mm Summilux


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