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    Will the New X-Series Powered Zoom Lenses be Parfocal?
    #1
    Senior Member majikfraug's Avatar
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    http://www.pcworld.com/article/23872..._firmware.html

    Was reading the above article this morning and it mentions the powered zoom feature on the new 14-42mm/F3.5-F5.6 and 45-175mm/F4.0-F5.6

    Does anyone know if they will be parfocal lenses? I would really love to have a "video style" zoom lens on a GH2 or AF100 that maintains focus throughout the zoom range!
    Jeremiah Rounds - Filmmaker


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    #2
    Senior Member Ben Totman's Avatar
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    until an announcement no one will know, we dont even know the aperture specs of the lenses yet.


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    #3
    Totally Usable Mod Stephen Mick's Avatar
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    Given the size they seemed to be designed for, I would highly doubt either would be parfocal.
    Stephen Mick
    Owner/Creative Director
    Skylark Creative

    weareskylark.com


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    #4
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    Quote Originally Posted by Ben Totman View Post
    until an announcement no one will know, we dont even know the aperture specs of the lenses yet.
    You realize that he is talking about the 2 lenses that have already been announced, and not the 12-35 and 35-100 prototypes. So we already have the specs.

    Seems to me that because they are such short lenses, it wouldn't be hard for them to maintain focus while zooming.

    Heres Hoping.


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    #5
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    most likely not.. probably similar to the 14-140 where it electronically adjusts focus after zooming


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    #6
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    If we are doing any wild assed guessing here, I am guessing that yes, they will be. The announcement is saying the 14-42 is slated to be the kit lens on the GF3. That camera is aimed at the general public. Not putting it on just opens the door to a ton of newbs pestering tech support for why it's not acting like their camcorder. Also if it isn't, a power zoom is a real useless and expensive function where parfocal would be a great incentive to upgrade for the extra cash.


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    #7
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    " if it isn't, a power zoom is a real useless and expensive function"
    Totally agree. What would be the point? I have long been posting into a seeming black hole regarding the need for a decent powered zoom option for DSLRs. Glad to hear any movement at all on what was heretofore considered sacrilege. Let's hope it's all good.


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    #8
    Rockin the Boat
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    Meh. Who cares. They're all pig slow anyhow. Might use one to hammer nails, but not put on any camera. Panasonic should buy a clue and release fast lenses for affordable prices.


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    #9
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    No need for a Parfocal optical design because zoom and focus are both electronic. The CPU can calculate how to adjust focus based on focal length.

    Chris


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    #10
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    Quote Originally Posted by OldCorpse View Post
    Meh. Who cares. They're all pig slow anyhow. Might use one to hammer nails, but not put on any camera. Panasonic should buy a clue and release fast lenses for affordable prices.
    But you have to understand that these products are filling a need. Someone who is looking at a GF2 or GF3 and thinking, that's nice and small but the lenses are HUGE in comparison. This is to fill that spot. Because if they made them faster they'd run into 2 problems: first and most important, they'd have to be bigger to accommodate larger apertures, and secondly they'd be more expensive to achieve this. Both of these points go directly against what these lenses have been designed to accomplish.

    What I could see happening sometime in the future though would be a faster more expensive version offered as a step up alternative to those who wanted it for purposes such as video.

    But stills will always be their primary concern with any m43 product, and for stills shooters looking for something small for a kit lens, these fit the bill.


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