Showcase Wesley 24mm f/1.4 CCTV

Discussion in 'Adapted Lens Sample Image Showcase' started by grantb, Jan 30, 2012.

  1. grantb

    grantb Mu-43 Veteran

    Here are some shots with the Wesley 24mm f/1.4 CCTV lens I got from ebay. These are E-P3 jpgs taken without the included lens hood or macro extension rings. I intend to post some macro ring shots once I figure out how to get the best results.

    one of the attractive things about this lens relative to similar offerings is the smooth and non-swirly bokeh
    6787962275_68ed8baa22_b.
    Smoothish Boke by grantb photos, on Flickr

    some shallow DOF and colors
    6787962115_c21d4d4b15_b.
    Glaze Samples by grantb photos, on Flickr

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    Glass Sheets by grantb photos, on Flickr

    this lens has nice sharpness (but not quite to the edges) and an eye for texture, especially for a CCTV
    some vingetting is evident at all aperture settings on m4/3
    6787961705_86126fd11b_b.
    Rough by grantb photos, on Flickr

    this image is intended to show the worst case vingetting and difraction when stopped down all the way (it actually closes completely, so this is backed off a little)
    not the best sunny day lens probably, though I have a while to wait until I can test that theory
    6787961863_b912451cf1_b.
    Wesley 24mm worst case vingette m4-3 by grantb photos, on Flickr
     
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  2. grantb

    grantb Mu-43 Veteran

    One of the things I like about these cheap CCTV lenses is a vintage, "cinematic" rendering quality

    6787962385_4fd707be75_b.
    Medio Litro by grantb photos, on Flickr

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    I Want a Pony by grantb photos, on Flickr

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    Tea Engineer by grantb photos, on Flickr

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    Woody by grantb photos, on Flickr

    ever take a picture that turned out a little funny when you looked at it later?
    6787961465_2d912e98b8_b.
    Pious Types by grantb photos, on Flickr

    6787961941_fb9e30aa17_b.
    Ornate Box by grantb photos, on Flickr

    6787962633_5a73600e36_b.
    Snowbird by grantb photos, on Flickr

    this lens stands up nicely to some "vintage" post processing
    6787962517_1712b841a4_b.
    Lisa and Julia and Giraffes by grantb photos, on Flickr
     
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  3. grantb

    grantb Mu-43 Veteran

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  4. chasm

    chasm Mu-43 Veteran

    262
    Mar 2, 2010
    Re vignetting: does this (as in your "worst case") happen only when the lens is stopped down, or have you cropped the other shots?
    V impressive - I'd be fascinated to see comparisons between this lens and the Panasonic 25mm f1.4, or the Voigtlander f0.95...
     
  5. grantb

    grantb Mu-43 Veteran

    Those shots are all uncropped.
     
  6. punkman

    punkman Mu-43 Regular

    151
    Dec 30, 2011
    Europe
    Uncropped 4:3 on my E-PL3, stopped down a bit.

    <a href="http://www.23hq.com/punkman/photo/7618579">
    7618579_bf03c984661ccdb3d3942e3a18581459_large. "567" width="756" />
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    <a href="http://www.23hq.com/punkman/photo/7618574">
    7618574_e4be9e1980f3c0b6b00740a9f49f922d_large. "567" width="756" />
    </a>
     
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  7. grantb

    grantb Mu-43 Veteran

    Here are some macros I took last night with the included 5mm macro rings. I tried to use the closest focusing distance.

    Disclaimer: these are handheld, I had to work with a little desk lamp, and I am NO macro expert. I think better results could be had with a tripod and proper lighting. Aperture was around f/4.

    First, no macro rings
    6828075733_b04dd64b81_b.
    No Rings by grantb photos, on Flickr

    1 ring
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    1 Ring by grantb photos, on Flickr

    2 rings
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    2 Rings by grantb photos, on Flickr

    3 rings
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    3 Rings by grantb photos, on Flickr
     
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  8. grantb

    grantb Mu-43 Veteran

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  9. punkman

    punkman Mu-43 Regular

    151
    Dec 30, 2011
    Europe
    Macro shots with 10mm extension rings, IBIS off, Shock reduction 2s, on a Gorillapod, with an external shutter button and ambient light on an E-PL3.

    Using three rings, I got a weird light halo and I couldn't get a sharp picture. Not sure why.

    <a href="http://www.23hq.com/punkman/photo/7625187">
    7625187_0d56210256c70cc17cb4998da16671d9_large. "567" width="756" />
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    <a href="http://www.23hq.com/punkman/photo/7625180">
    7625180_4d4184d6bd5b09dc61eb59eceb79c7bc_large. "567" width="756" />
    </a>

    <a href="http://www.23hq.com/punkman/photo/7625181">
    7625181_7a51368e881980533654a65959e6a21c_large. "567" width="756" />
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    <a href="http://www.23hq.com/punkman/photo/7625186">
    7625186_61f90ff8a8320caa7da5ed91521017b5_large. "567" width="756" />
    </a>

    <a href="http://www.23hq.com/punkman/photo/7625197">
    7625197_d06916556a4d16cece82ca0476d3b69f_large. "567" width="756" />
    </a>

    <a href="http://www.23hq.com/punkman/photo/7625182">
    7625182_4aa307cb7b39e61c4d2f10f465a93317_large. "567" width="756" />
    </a>

    <a href="http://www.23hq.com/punkman/photo/7625192">
    7625192_80efd9029025694bdaaf115d639c26c5_large. "567" width="756" />
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    <a href="http://www.23hq.com/punkman/photo/7625199">
    7625199_62848a273b2ed0a6d4dccfd983fb655b_standard. "345" width="460" />
    </a>


    Can't wait to test an SLR macro lens and see how the Wesley compares.
     
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  10. punkman

    punkman Mu-43 Regular

    151
    Dec 30, 2011
    Europe
    Some more outside shots. I don't like when it vignettes more on one side. Might be because of the strange aperture shape, or my adapter might be a bit off. Not sure I love shooting it outside, I think the Wesley feels more like an indoor available-light lens. My Panasonic 14mm would have worked better for these shots.

    <a href="http://www.23hq.com/punkman/photo/7631321">
    7631321_496e8bb8a7b97676e49ebc2ed6368c51_large. "567" width="756" />
    </a>

    <a href="http://www.23hq.com/punkman/photo/7631328">
    7631328_964db1d50d96dce00b017dd505750257_large. "567" width="756" />
    </a>

    <a href="http://www.23hq.com/punkman/photo/7631337">
    7631337_01115dbb9bb34e83ece68679cc0e541c_large. "567" width="756" />
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    <a href="http://www.23hq.com/punkman/photo/7631330">
    7631330_9ad0f1ece6b3056416b0f277351f3b6e_large. "567" width="756" />
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    <a href="http://www.23hq.com/punkman/photo/7631343">
    7631343_925e2bbb73222f04a3e867b304209fdb_large. "567" width="756" />
    </a>
     
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  11. grantb

    grantb Mu-43 Veteran

    Thanks for posting punkman. I agree the 14mm would be better for these types of shots. I wouldn't mind having one of those myself. You did get good sharpness on the silhouettes and nice gradations in the clouds though.

    I did some more outdoor shooting yesterday, will post up results later. The tiny range of aperture adjustment between 4 and 12 makes it a challenge to find the long DOF sweet spot, and the vignetting does no favors to landscapes. Shooting landscapes with this lens seems to necessitate changing the aspect ratio or cropping. I guess 48mm isn't the ideal FL for this anyway, especially if it has to be cropped further.

    I noticed some uneven vignetting while I was shooting yesterday, but it was caused by the floppy rubber lens hood! Also, before I went out I noticed quite a bit of looseness in the barrel assembly, but tightening the three tiny screws on the sides towards the mount fixed that. I wouldn't be surprised if there were a lot of variation between copies of this lens as well.

    *edit: ok just verified that unevenness in vignetting can be adjusted by the three screws in the back sides of the barrel. I'm not sure how to do this off-camera yet, but when I figure it out, I'm going to put some blue loctite on them.
     
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  12. punkman

    punkman Mu-43 Regular

    151
    Dec 30, 2011
    Europe
    On another note, I got my GH1 today and put the Wesley on it. It definitely seems like a winner for video. I will upload some samples in the next few days.
     
  13. avidone

    avidone Mu-43 Top Veteran

    520
    Jun 24, 2011
    Rome, Italy
    You guys convinced me to order one of these. It will be my first foray into c-mount territory. Of course with cheap shipping from China and painfully slow and inefficient Italian post and customs, it will probably be about a month before it gets here. Sometimes I have ordered stuff from China on EBay and then completely forgotten by the time it arrives-- oh well, then it is a nice surprise when it does arrive

    Sent from my iPad using Mu-43 App
     
  14. correos.e

    correos.e Mu-43 Regular

    46
    Jan 25, 2012
    really avidone? I'm sure no one could tell that you're a lens hoarder by looking at your signature! :)
    Mine is on its way, waiting anxiously. I also think there might be a LOT of variation in the quality of this thingies, so I hope I'll be lucky with my copy.
     
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  15. grantb

    grantb Mu-43 Veteran

    Cool, post up some images when you get them guys.

    Here's a few more more outdoor pics:

    no processing
    6885132669_6dbf3efa74_b.
    Capitol Lake Greenery by grantb photos, on Flickr

    heavy processing
    6885132591_04025368b1_b.
    Bitter Grump by grantb photos, on Flickr

    100% crop center, about f2
    6885132501_6b2d3c9c43_b.
    Capitol Lake Nutria (100% crop) by grantb photos, on Flickr

    On the technical front, I tried to shim the lens internally behind the mount to even out the vignetting, but it didn't work. Something in between the adapter and the mount is probably the way to go here... or re-machining.
     
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  16. avidone

    avidone Mu-43 Top Veteran

    520
    Jun 24, 2011
    Rome, Italy
    lens hoarder?

    OK, OK, I guess I am, sorta kinda... though actually the lenses I hoard are pretty low cost and high quality. Only a few have been sourced from EBay. Most have come from thrift stores and flea markets where I paid very little for them.

    I honestly am liking legacy and other adapted manual lenses more and more after my incident of my Oly kit lens breaking as I tried to unscrew a filter. I DO like to have quick auto-focus for some things, but, honestly, I remind myself that there was no automatic anything on my Pentax MX, back in the early 80's. I was just happy to have a cool BUILT-IN exposure meter to recommend settings.

    And even some of these Chinese C-mount lenses seem to be better built than the plastic crap like my kit lens. The older Soviet and DDR lenses are works of technological marvel...

    of course, as you note, there can be QC issues, but it is easier to afford a bit of hit-or-miss at these prices


     
  17. punkman

    punkman Mu-43 Regular

    151
    Dec 30, 2011
    Europe
    Speaking of variation between lenses...

    There is an area called Fujian in China. It is home to many companies that make lenses and have Fujian in their name. It is known that designs are shared between various groups in China, their own version of open-source. Perhaps, that explains the variation in these CCTV lenses, they are made by different companies. There are also rebranding cases, like grantb's Fotasy 35mm f/1.7.
     
  18. correos.e

    correos.e Mu-43 Regular

    46
    Jan 25, 2012
    Yes, certainly variations of similar designs between companies. But I meant there quality control perhaps is not as good within companies, and you might get lucky with the result of a careful technician or bad luck in the for of a haphazardly assembled kit, all from the same factory floor!
     
  19. NVar

    NVar Mu-43 Rookie

    15
    Sep 4, 2011
    What do you think about the speed of the lens? I recently got this lens and like it as an inexpensive solution for this FOV.

    I compared it to the Pana 20 mm f1.7 and Yashica 50 mm f2, though, and found that at f1.4 the 24mm equalled about f2 on those lenses (at least if you trust the shutter speeds the camera suggests in Aperture priority mode). My Fujian C-mount 35 mm f1.7 is about the same.

    So maybe the Wesley is not quite the low light monster, but with these prices I'm not really complaining. Also, I'm not missing the crazy "swirly bokeh" found on some other cheap C-mount lenses in this FOV range.
     
  20. punkman

    punkman Mu-43 Regular

    151
    Dec 30, 2011
    Europe
    Nvar, I've also wondered the same thing but haven't tested it yet.

    Let's do a quick measurement.

    Focal length / diameter= f number

    24/17 = 1.41

    So this lens needs an aperture with 17mm diameter. The front element looks like it's around 22-23mm and the aperture a bit smaller than that. So f/1,4 is plausible. Instead of checking with A-priority, you could try taking a photo with each lens at a set shutter speed. Then check if one is brighter.

    Another issue is that different lenses let different amounts of light at the same f number. From wikipedia:


    Alternatives:

    PanaLeica 25mm f/1.4 - less expensive than the others but focuses by "wire".

    Voigtlander 25mm f/0.95 - great if you wanna spend over $1000, has manual focus. No EXIF metadata and heavier than the camera.

    Canikon 24mm 1.4 - over $1000, not sure if they can be adapted.

    The best option might be a higher quality CCTV lens, like a Fujinon or Pentax/Cosmicar 25mm f/1.4. These are only 2-3 times the price of the Wesley.
     
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