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Panasonic 7-14 on GH3

Discussion in 'Native Lenses' started by thaiusmle, Jan 23, 2013.

  1. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    Hi Everyone,

    I would like to ask anyone with GH3 and Panasonic 7-14. Is there any problem with purple flare and ghosting with this combo? I just tried the 7-14 on OM-D which is quite bad IMO when there is a strong light source in the frame. Image quality otherwise is exceptional. Thanks.

    TC
     
  2. Kiwi Paul

    Kiwi Paul Mu-43 Top Veteran

    729
    Aug 15, 2011
    Aberdeen Scotland
    I'll try to do a test for you tonight if I get a chance.

    Paul
     
    • Like Like x 1
  3. aonavy

    aonavy Mu-43 Regular

    143
    Nov 25, 2012
    Epping NH
    George
    it doesnt on the GH2
     
  4. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    Thank you very much in advance, Paul!

    I rented OM-D and 7-14 to test this combo. Both are great equipment. The flare can be avoided and shaded, but ghosting like these can't be shaded. The ghosting seem to be the same shape as the light source.

    OM-D_7-14--3.JPG OM-D_7-14--2.JPG OM-D_7-14--1.JPG
     
    • Like Like x 1
  5. Robstar1963

    Robstar1963 Mu-43 Top Veteran

    895
    Jun 10, 2011
    Isle of Wight England UK
    Robert (Rob)
    The question relates specifically to the GH3 because the GH3 is assumed to have the same sensor as the OM-D which is thought by some to be the cause of the said purple flare.
    There have been some thoughts about the flare being due to the internal physical architecture of the OM - D rather than the sensor so results from the GH3 would be interesting ?
     
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  6. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    Agreed!
     
  7. RT_Panther

    RT_Panther Mu-43 Legend

    May 4, 2011
    Texas
    Panasonic bodies offers software correction for Lumix lenses - Olympus bodies don't. Thus one should have no problems with a Lumix lens on a Panasonic body. :smile:
     
  8. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    I don't think it can be corrected by the software. This is not CA what we are talking about. It's flare and ghosting.
     
  9. xdayv

    xdayv Color Blind

    Aug 26, 2011
    Tacloban City, Philippines
    Dave
    the 7-14 in my observation with using the G3 have been prone to this.
     
  10. mfj197

    mfj197 Mu-43 Regular

    80
    Aug 20, 2012
    Guildford, UK
    Michael
    How funny - I didn't get the purple ghost images with this lens on my G3. It did exhibit normal lens flare though, as is to be expected.

    The fact that the GH3 is a Panasonic does not automatically mean it won't have the problem. Panny corrects for CA with Panny lenses, but this is not CA.

    Michael

    Sent from my GT-I9100 using Tapatalk 2
     
    • Like Like x 1
  11. Christophe

    Christophe New to Mu-43

    wow, these images are scary. i think there is light being reflected from somewhere inside the body, back onto the sensor... the 7-14 was one of the reasons I joined u4/3 and got the gh3, so I hope they did not create the same problem in that body. thanks for any confirmations either way...
     
  12. Kiwi Paul

    Kiwi Paul Mu-43 Top Veteran

    729
    Aug 15, 2011
    Aberdeen Scotland
    Ok, here's some sample pics I just took.

    For most part there is no flaring or purple fringing but if I really push it to the limit and hold the camera very close to the halogen spots there is a bit of purple fringing etc but that is extreme and not likely to be encountered in normal shooting.
    These are OOC jpgs, GH-3 and 7-14

    Paul


    7mm f4


    14mm, f4


    7mm, f4


    7mm, f4


    7mm, f4
     
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  13. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    Thank you very much!!! This is a good news indeed. If you have time, can you try shooting the 7-14 to the bright windows during day time. I found a lot of purple ghosting in this situation with OM-D.
    OM-D_7-14--3.JPG
     
  14. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    Anyone with this combo can give me some opinion or test? Thanks!
     
  15. Kiwi Paul

    Kiwi Paul Mu-43 Top Veteran

    729
    Aug 15, 2011
    Aberdeen Scotland
    Soon as we get some sun here I'll try to test for you as requested. All overcast skies here.

    Paul
     
  16. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    Thanks again!
     
  17. jloden

    jloden Mu-43 Hall of Famer

    May 15, 2012
    Hunterdon County, NJ
    Jay
    Finally got around to testing the GH3 and 7-14mm to see if I could purposely create some flare. There is some purple flare showing up in the most extreme cases, but I had to work a little to get it to appear (point the lens straight into the sun). The ghosting and purple flare certainly seems to be better controlled in this combo than on the OM-D as far as I can tell, but it's not completely absent.

    Some example shots below.

    Note in these first couple, I couldn't see any flare or ghosting. Zoomed in at 100% there *might* have been the faintest purple tint to some of the shadow areas but it's essentially indistinguishable from the natural shadow tone variation if so, so I'm fine with this performance here:

    <a href="http://www.flickr.com/photos/30940068@N02/8420432787/" title="GH3 + 7-14mm by jloden, on Flickr"> 8420432787_fe4fdd97c7_b. "1024" height="768" alt="GH3 + 7-14mm"></a>

    <a href="http://www.flickr.com/photos/30940068@N02/8421529886/" title="GH3 + 7-14mm by jloden, on Flickr"> 8421529886_9cb6c355a2_b. "1024" height="768" alt="GH3 + 7-14mm"></a>


    Switching to a window with direct sunlight, I pointed the camera straight into the sun, and here are the worst examples I could manage. Definite purple flare and even a starburst type reflection, mixed with the standard green & orange colors.

    <a href="http://www.flickr.com/photos/30940068@N02/8421532004/" title="GH3 + 7-14mm by jloden, on Flickr"> 8421532004_8f5644dfdf_b. "1024" height="768" alt="GH3 + 7-14mm"></a>


    <a href="http://www.flickr.com/photos/30940068@N02/8421533062/" title="GH3 + 7-14mm by jloden, on Flickr"> 8421533062_fe17a4b3be_b. "1024" height="768" alt="GH3 + 7-14mm"></a>


    <a href="http://www.flickr.com/photos/30940068@N02/8420434747/" title="GH3 + 7-14mm by jloden, on Flickr"> 8420434747_366c6d24e5_b. "1024" height="768" alt="GH3 + 7-14mm"></a>
     
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  18. Kiwi Paul

    Kiwi Paul Mu-43 Top Veteran

    729
    Aug 15, 2011
    Aberdeen Scotland
    That's what I found on my test with the halogen spots, pretty much had to use extreme shooting (like pointing right into the spot) to get anything appreciable.

    Paul
     
  19. thaiusmle

    thaiusmle Mu-43 Regular

    58
    Jan 18, 2013
    Thanks guys. This test seals the deal for me. I rented 7-14 with OM-D, but had issues with the purple flare and ghosting. GH3 will be on it's way!!!


     
  20. h0rde

    h0rde New to Mu-43

    5
    Jan 28, 2013
    That's actually pretty scary. I have an OM-D and am searching for a 7-14 to use as my go-to wide angle lens, and I don't really want to see insane purple stuff like that. How bad of an issue is this? It doesn't seem like there are too many (any?) other options on the ultra-wide end for MFT.