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Thread: Opteka 500mm mirror

  1. #1
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    Default Opteka 500mm mirror

    Opteka
    Model - MF 500mm f:8 Mirror Lens
    Groups/Elements: 8/9 <-----mine was 4/5 - 2 mirrors and 3 glass
    Diameter: 3"
    Length: 3.4"
    Weight: 360 grams
    Filter Size Front: 72mm
    Aperture: f:8
    Macro Magnification: 1:2.7
    Minimum Focus Distance: 5.5'
    Manual Focus: Yes
    High quality crystal optics
    Fully Multi-coated
    Made in Japan <----- Mine was made in Korea
    T mount - 4/3s


    PRO
    Cheap
    500mm(1000mm effective)
    Cheap
    very light weight
    Cheap
    very little Chromatic Aboration
    Cheap
    fun
    Cheap
    Very Compact


    CON
    image stabilized or tri-pod a must
    fixed Aperture
    poor contrast
    soft colors
    difficult to focus
    shallow DOF
    poor/strange bokeh
    narrow field of view


    The inexpensive mirror lenses are not for everybody and requires a bit of experience with them to get the results you might hope for. To get results, you must run pictures thru software. The results I have gotten have ranged outright c**p to good. I bought this lens just as an experiment to see for myself if the were as bad as rumored. What I found is that you need a bright sunny day so you can get enough light to over come the f8 aperture and the long lens camera shake. It is very difficult to focus, not only because it is manual, but even with about 270 degrees of rotation on the focal ring, the focus was extremely sensitive. Less than 1 degree of rotation was more than enough to make or break focus. The DOF was very shallow at 10meters DOF is about 6cm. There is little CA as there is not much glass in this lens. A large lens on the front and 2 smaller ones in the rear. A little bit of vignetting is visible There is a large mirror at the rear and a small one at the front. The Bokeh can be distracting and was best if the background was open sky or something without detail. Also I found that although this lens will focus to macro I only got poor images, soft & fuzzy. That said with good light and image stabilized camera I did get some decent $100 lens images. I needed to post process by pushing up the contrast and just a little sharpening. I will take it down to the local duck pond or the bird bath out back and play, I don't think National Geographic will use any of the images but the pictures are decent and I had fun and the lens is cheap cheap.



    Gerry
    Last edited by ghenton; 09-28-2008 at 06:32 PM.
    E330, E520, Zuiko 14-42, Zuiko 14-45, Zuiko 40-150, Zuiko 11-22, Ziko 50-200,Sigma 50-500, Sigma 18-50EX DC Macro, Sigma 150/2.8 APO EX DG HSM Macro,Sigma 105/2.8, Sigma 55-200, Olympus EX25, virtual village focus screen, ME-1 Eyecup, Metz 44 Flash,Slik PRO400DX TriPod, Giottos MH7001-621 BallHead, Ownuser FX-FBH Battery Grip, 200+ legacy lenses.

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  2. #2
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    Default Re: Opteka 500mm mirror

    Here are 2 images taken at ~3 meters f8, with the Opteka 500mm mirror and a Sigma 50-500mm@500mm. there does seem to be a bit of difference in field of view but it was taken tri-pod mounted. First image is Opteka, second the Sigma. These are out of camera neutral settings and only resized for web. This is about as close as the Sigma 50-500mm can focus so used this as a start point.
    E330, E520, Zuiko 14-42, Zuiko 14-45, Zuiko 40-150, Zuiko 11-22, Ziko 50-200,Sigma 50-500, Sigma 18-50EX DC Macro, Sigma 150/2.8 APO EX DG HSM Macro,Sigma 105/2.8, Sigma 55-200, Olympus EX25, virtual village focus screen, ME-1 Eyecup, Metz 44 Flash,Slik PRO400DX TriPod, Giottos MH7001-621 BallHead, Ownuser FX-FBH Battery Grip, 200+ legacy lenses.

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    Default Re: Opteka 500mm mirror

    These are at ~10meters same settings. At this distance and greater The Opteka seemed to work better.
    E330, E520, Zuiko 14-42, Zuiko 14-45, Zuiko 40-150, Zuiko 11-22, Ziko 50-200,Sigma 50-500, Sigma 18-50EX DC Macro, Sigma 150/2.8 APO EX DG HSM Macro,Sigma 105/2.8, Sigma 55-200, Olympus EX25, virtual village focus screen, ME-1 Eyecup, Metz 44 Flash,Slik PRO400DX TriPod, Giottos MH7001-621 BallHead, Ownuser FX-FBH Battery Grip, 200+ legacy lenses.

    http://picasaweb.google.ca/ghenton

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    Default Re: Opteka 500mm mirror

    This is the Opteka at macro focus ~2 meters, focus is on the nose
    E330, E520, Zuiko 14-42, Zuiko 14-45, Zuiko 40-150, Zuiko 11-22, Ziko 50-200,Sigma 50-500, Sigma 18-50EX DC Macro, Sigma 150/2.8 APO EX DG HSM Macro,Sigma 105/2.8, Sigma 55-200, Olympus EX25, virtual village focus screen, ME-1 Eyecup, Metz 44 Flash,Slik PRO400DX TriPod, Giottos MH7001-621 BallHead, Ownuser FX-FBH Battery Grip, 200+ legacy lenses.

    http://picasaweb.google.ca/ghenton

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    Default Re: Opteka 500mm mirror

    These are the same images after just a quick bit of post processing, (increase contrast and a light bit of sharpening) they are not that bad.
    E330, E520, Zuiko 14-42, Zuiko 14-45, Zuiko 40-150, Zuiko 11-22, Ziko 50-200,Sigma 50-500, Sigma 18-50EX DC Macro, Sigma 150/2.8 APO EX DG HSM Macro,Sigma 105/2.8, Sigma 55-200, Olympus EX25, virtual village focus screen, ME-1 Eyecup, Metz 44 Flash,Slik PRO400DX TriPod, Giottos MH7001-621 BallHead, Ownuser FX-FBH Battery Grip, 200+ legacy lenses.

    http://picasaweb.google.ca/ghenton

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    Default Re: Opteka 500mm mirror

    Wow,

    im impressed for the cost. Its good to know someone can get 500mm for cheap and thats reasonable...I plan on getting some of these cheap lenses to play with. for general shooting they should be fine.
    E-500
    Zuiko 14-45mm
    Zuiko 40-150mm



    Sony Alpha 350, lots of goodies with it...

    I have gone to the Max!

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    Default Re: Opteka 500mm mirror

    Quote Originally Posted by ghenton View Post
    These are the same images after just a quick bit of post processing, (increase contrast and a light bit of sharpening) they are not that bad.
    Very informative assessment of this lens and thanks for sharing samples and thoughts.


    JW
    Jesse

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    Ferry Dwijaya

    Default Re: Opteka 500mm mirror

    Now i know about this mirror lens worked, thanks mate
    Owning a DSLR does not make you a photographer. It makes you a DSLR owner -AnonymousE-3|E-M5|NX-300|Zuiko Digital : 14-54 MK II|ZD 50-200 ED|50/2 IZuiko OM : OM 50/1.4|OM 50/1.8|Tamron : SP 90/f2.5|Tamron 18F|01FMetz 44-AF1|EVF-2|MMF-2|Mal-1NX : 18-55 MK III|SEF-A8Mono-TriPod|Pro Runner 350|Slingshot 200AW|Compuday 150|Toploader 55|Passport Sling

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    Default Opteka 500mm mirror

    first off, those are optically not very good. Second, youd be using a step-down ring to get a 37mm filter on a 55mm lens, meaning youll have huge vignetting with a little round picture in the center.

  10. #10
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    Default Re: Opteka 500mm mirror

    Quote Originally Posted by Garrudae View Post
    Second, youd be using a step-down ring to get a 37mm filter on a 55mm lens, meaning youll have huge vignetting with a little round picture in the center.
    Huh? I don't understand what you are referring to in this thread. Who said anything about a filter?
    Rich
    Olympus E-M10; Panasonic GM5
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    Default Re: Opteka 500mm mirror

    Thanks for the review and samples. Not very impressive resolution or contrast. I think I'll save my $100 and put it toward something better.
    February Photos
    March photos

    Comments/criticisms are just my personal opinion and are meant to be constructive. Please feel free to do the same for me.


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    Default Re: Opteka 500mm mirror

    Hello,
    Well do you think 500mm is quite good mirror for camera?

  13. #13
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    Default Re: Opteka 500mm mirror

    Hi;
    The Mirror lenses are a best value 500mm lens costing from under $100 and up. They have a wide focal range from 3' to infinity. There is little to no chromatic aberration. It is compact and light weight. That said they are difficult to use.
    The 1000mm effective focal length and fixed f8 aperture would be a challenge under the best circumstances using any technology. It is a fixed focal length lens, you need to use your "2 feet" zoom. Image stabilization is a must. The focus is manual and difficult to nail. Mirror lenses by its nature have low contrast, this can be adjusted post camera in software. Bokeh can be distracting (light donuts).

    My conclusions have not changed from the original postings, It is a cheap fun lens to use when I went down to the bird park / duck pond. I have 4 mirror lenses of different makes, all are about the same ( opteka, pentax, zeis and a russian lens) image quality but better build. I take one about once a month out to play with just for giggles. I have about 350 legecy lenses in my collection.

    Gerry
    E330, E520, Zuiko 14-42, Zuiko 14-45, Zuiko 40-150, Zuiko 11-22, Ziko 50-200,Sigma 50-500, Sigma 18-50EX DC Macro, Sigma 150/2.8 APO EX DG HSM Macro,Sigma 105/2.8, Sigma 55-200, Olympus EX25, virtual village focus screen, ME-1 Eyecup, Metz 44 Flash,Slik PRO400DX TriPod, Giottos MH7001-621 BallHead, Ownuser FX-FBH Battery Grip, 200+ legacy lenses.

    http://picasaweb.google.ca/ghenton

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