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Thread: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

  1. #1

    Default Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom



    This thread is dedicated to review of Lumix G 45-175mm F4.0-5.6 lens. Official announcement from Panasonic can be referred to this link

    - Impression on the lens design, build and feature
    - Field test
    - Comparison with LUMIX G VARIO 45-200mm F4.0-5.6 MEGA O.I.S. and LUMIX G VARIO 100-300mm / F4.0-5.6 / MEGA O.I.S


    Technical Specifications of
    Please refer to this link

  2. #2

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Main Feature
    - Electric-powered and manual zoom operation
    This lens feature both electric powered and manual zoom. The electric zoom is soundless and smooth. Placed on the left side of the lens, easy operation with left hand thumb. I am neutral to this design because I do not find myself in a situation to use this. Will be solely on manual zoom.

    There is no distance scale on the lens but the focal length is shown on the top right corner of LCD. This applies to both Panny and Oly latest GF3 and EP3 model. Not sure about other models. When you zoom in-out, the focal length on LCD changes instantly. Nice features, I like it.


    - Power O.I.S.
    Unlike Panny 45-200mm, there is not any button to switch on/off OIS. Which means, the Power O.I.S is always on by default. If one is using Oly m4/3 body, he has to manually switch off the IBIS in order to have the Power O.I.S. If forget to do so, there will be no IS at all. PLease take note that when both O.I.S. and IBIS are switched on, none IS will work.

    Official site claim that POWER O.I.S. suppresses large, slow movements two times more effective than Mega O.I.S. A scientific figures, I am not sure how to justify and challenge this result. I could only review the IS efficiency by field test.


    - Nano Surface Coating
    The Nano coating would minimizes reflections at entire visual light range to reduce ghosting and light flare.

    The cheapest Nano coating lens in the market, for a lens below USD450. Though there is Nano coated filter available in the market, the smallest size is from filter size 52mm onwards. For price reference B+W nano coated UV filter is around USD46. For a lens at USD450 (suggested retail price) that comes with nano coating, it is good value.


    - Multi-Actuator Floating Inner Focus System
    The X lens comes in innovative design with multi actuator floating inner focus system, that control three lens groups separately to significantly reduce both size and weight. The lens is approx. 90mm and 210g, and will not extend out when zoom. One of the most compact tele lens.


    - Two Extra-low Dispersion (ED) lenses
    2 X ED element that should effectively prevent CA. I believe CA would be drastically reduced to almost visibly none if mounted on Panny body, mainly software correction by body. For user like me, who use Oly body, this features might come in good to combat CA. Below is the lens construction (copied from Panasonic website)



    - Seven aperture blades
    Aim to produce good bokeh shooting at large aperture. However, given that the largest aperture is at f4, I certainly have some reserve how good the bokeh it could be.


    - Available in black and silver
    At least there is now a pure black Panny lens to mix and match the color of the body that you like.


    On paper, I like all the features listed above besides the electric-powered zoom that I am neutral to.
    Here is the list I wish the design could be better ;

    - Even you shake the lens a bit, you could hear a sound from the lens (like loosing part). This is from the Power O.I.S element. Only if you mount the lens to the body and switch on the power and O.I.S is active, the "loosing part" sound is gone.
    - The lens cap could hardly be fitted or easily dropped out when lens hood is inserted to the lens, either way of direction pointing in or out.
    - The zoom ring too move, I oftenly overshot when zoom in/out and spend extra second on getting the right distance scale.
    Last edited by MichaelLee; 3rd September 2011 at 11:40 AM.

  3. #3

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    How does the lens look like ?



    Front View : "X" and Power OIS are red-bolded



    Side View : Electric-power Zoom button / Nano Surface Coating / Made in Japan
    [/url]


    EP1 and 14-175mm
    [/url]


    Silver matched
    [/url]

  4. #4

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Side by Side : Panny 45-175mm vs Panny 45-200mm

    Filter size 46mm vs 52mm
    [/url]



    One of the main feature (Multi-Actuator Floating Inner Focus System) that I like, is the size of 45-175mm. The lens does not extend out when zoom.
    [/url]

  5. #5

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Angle of View : 45-175mm vs 45-200mm






    Changes : Focal Length/Aperture
    Lena 45-175mm vs 45-200mm
    45mm @ f4 vs f4
    60mm @ f4.5 vs f4.1
    80mm @ f5 vs f4.5
    100mm @ f5.3 vs f5
    138mm @ f5.5 vs f5.2
    163mm @ f5.6 vs f5.3
    175mm @ f5.6 vs f5.4
    200mm @ N/A vs f5.6



    A few pictures* taken at close focal length for comparison ;
    * please note all pictures are taken with EP3 body, at RAW and convert to jpeg and resize, with no other processing

    - 45-200mm has extra 50mm (effective range) in longer end
    - Though both lenses are at f4-f5.6, 45-200mm has slightly upper hand in f stop. For example at 80mm, 45-175mm is at f5 wheres 45-200mm is at f4.5 at its largest aperture
    - In terms of sharpness, I could not tell a difference from the below pictures. A further comparison on pixel mapping or 100% cropped would be required











    Last edited by MichaelLee; 5th September 2011 at 10:29 PM.

  6. #6

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Vignetting Test without hood

    at f5.6, the vignetting still quite visible, once stop down to f8, it is barely noticed. Fully gone when further stop down at f11








    CA Control

    Pretty good handling on CA, bear in mind that EP3 does not auto correct any CA

    Last edited by MichaelLee; 5th September 2011 at 11:21 PM.

  7. #7
    Senior Member ricleo's Avatar
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    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Thanks for the review and comparison shots so far.

    Is it me or does the 45-200 seem to render warmer colors compared to the 45-175 in the comparison shots? Were the shots taken in M mode with the same shutterspeeds since F stops used in the comparison are the same?
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  8. #8

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Quote Originally Posted by ricleo View Post
    Is it me or does the 45-200 seem to render warmer colors compared to the 45-175 in the comparison shots? Were the shots taken in M mode with the same shutterspeeds since F stops used in the comparison are the same?

    I am not sure this is true, it could be due to the lens or the AWB that set by the cam body.

    Yes, the shot are taken at M mode, and same shutter speed.
    Last edited by ed9119; 6th September 2011 at 05:23 PM.

  9. #9

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    The size comparison is quite stark. Talk about a reduction in not just diameter but also length.

  10. #10
    Moderator ed9119's Avatar
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    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Thanks Mike ..... this is a Class 1 'A' Grade review
    shaddap and just shoot .... up close
    Walkeast

  11. #11

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Quote Originally Posted by NazgulKing View Post
    The size comparison is quite stark. Talk about a reduction in not just diameter but also length.
    Here is the size comparison ;

    45-175mm vs 45-200mm
    Weight 210g vs 380g
    Length* 90mm vs 156mm

    Length* hood off at maximum zoom


    Weight is 40%+ lighter, length is 55%+ shorter.

  12. #12

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Here is the field test ; All the picture are shot with Oly EP3 and RAW.
    Only convert to jpeg and resize and no other processing.


    f8m, 1/100, 45mm, ISO200



    f7.1, 1/640, 91mm, ISO200



    f6.3, 1/500, 163mm, ISO200



    f6.3, 1/1600, 91mm, ISO200



    f5, 1/400, 84mm, ISO200
    Last edited by MichaelLee; 8th September 2011 at 07:56 AM.

  13. #13

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    f4, 1/250, 175mm, ISO200



    Absolutekev in action f4.8, 1/320, 68mm, ISO200



    f5.4, 1/160, 132mm, ISO800



    f5.5, 1/320, 138mm, ISO800



    f6.3, 1/100, 91mm, ISO500
    Last edited by MichaelLee; 7th September 2011 at 10:19 PM.

  14. #14

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    f5.3, 1/100, 116mm, ISO1000




    f5.6, 1/160, 163mm, ISO500




    f5.6, 1/500, 175mm, ISO250




    f5.6, 1/1250, 175mm, ISO250




    f5.6, 1/400, 163mm, ISO400

  15. #15

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    f5.3, 1/400, 91mm, ISO250



    f5.6, 1/500, 175mm, ISO800



    f5.3, 1/320, 95mm, ISO800



    f5.3, 1/640, 116mm, ISO200



    f6.3,1/200, 71mm, ISO200

  16. #16

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    f5.3, 1/200, 107mm, ISO640




    f5.6, 1/200, 175mm, ISO800




    f5, 1/125mm, 65mm, ISO400




    f5.6, 1/80, 175mm, ISO640
    * Notice that for 175mm focal length (effective range at 350mm), it is advised to shot at least 1/350 to avoid handshake. This picture is shot at 1/80. Though not at 100% super sharp, I am quite convinced that the Power OIS works pretty convincing.




    f5.5, 1/125, 138mm, ISO 800

  17. #17
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    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Many thanks for the review. Interesting info.

  18. #18

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Another pic to test the Power OIS at maximum zoom. A situation I would have shot by 1/350 if no IS. Looks good to you ?


    f5.6, 1/50, 175mm, ISO400

  19. #19
    Moderator ed9119's Avatar
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    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    ".... f5.6, 1/50, 175mm, ISO400 ...."

    tripod mounted or handheld ???!!!???
    Last edited by ed9119; 9th September 2011 at 10:59 AM.
    shaddap and just shoot .... up close
    Walkeast

  20. #20

    Default Re: Review: Lumix G X Vario PZ 45-175mm F4.0-5.6 ASPH Power OIS power zoom

    Quote Originally Posted by ed9119 View Post
    ".... f5.6, 1/50, 175mm, ISO400 ...."

    tripod mounted or handheld ???!!!???
    all the shot i taken above are handheld. No tripod

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