P12-32 w/ ricoh GW-1 0.75 wide converter (18mm equiv.)

Discussion in 'Accessories' started by jyc860923, Aug 28, 2016.

  1. jyc860923

    jyc860923 Mu-43 Hall of Famer

    Feb 28, 2012
    Shenyang, China
    贾一川
    The Ricoh GW-1 wide converter was made for the GRD series, changing the 28mm FOV to 21mm. I've tried it years ago on an Oly 14-42II which also takes 37mm filters to find that the optical quality was quite good, and now I'm trying it on the 12-32, using the same 37mm filter mount, to see if it does a decent job converting 24mm into 18mm.

    29204068901_8cf75f2ced_b.jpg P8280028_E-P5_1_60_3.5_200_12.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr

    29248886946_214bd3e40f_b.jpg P8280029_E-P5_1_8_3.5_640_12.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr

    28994682170_d0cc062879_b.jpg P8280032_E-P5_1_160_5.0_200_12.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr

    28994675540_98241e76cb_b.jpg P8280060_E-P5_1_5_6.3_250_12.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr

    28661966313_c10068649f_b.jpg P8280062_E-P5_1_5_5.0_250_12.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr

    So far I've found that the sharpness in the image centre remains excellent, however micro-contrast could suffer due to glowing and fogging when dealing with lights coming from certain directions; sharpness towards the edges and extreme corners are weak, although it's still usable especially in video mode. zooming into the long end does show more imperfections so I would avoid using it that way. and with this converter on, the MFD is much much closer, at approximate 8cm to the front element, which enables making thin DOF wide shots however don't expect larger magnification. CA is totally tolerable, no visible distortions or vignetting other than the 12-32 itself's, AF is OK.
     
    Last edited: Aug 28, 2016
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  2. jyc860923

    jyc860923 Mu-43 Hall of Famer

    Feb 28, 2012
    Shenyang, China
    贾一川
    more photos

    29282169956_3641f7ab69_b.jpg P8290038_E-P5_1_400_3.7_200_14.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr

    28695173513_5c2ae5f2f5_b.jpg P8290037_E-P5_1_60_3.5_200_12.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr

    28695179263_0e0c29e006_b.jpg P8290028_E-P5_1_50_3.5_100_12.0 mm_LUMIX G VARIO 12-32_F3.5-5.6 by Kian j, on Flickr
     
  3. physicsdude

    physicsdude Mu-43 Regular

    122
    Feb 11, 2014
    KS
    Jan
    looks decent, I tried a Fujifilm 0.7x wide angle converter on it before. It starts vignetting below 14mm