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Thread: Tubes

  1. #11
    Join Date
    Dec 2004
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    Los Angeles, CA
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    I use those tubes - they work fine, though like any macro set up, shallow DOF and precise focusing issues are to be expected. I almost bought a Canon 100 f2.8 macro but decided to go with the extension tubes instead. I think the only issue with tubes instead of a dedicated macro lens is the loss of light with the tubes, though I remember reading someplace that macro lenses also suffer from that at macro distances?
    Canon A720 IS, 40D w/ BG-E2N, 28 1.8, 50 1.4, Sigma 70 2.8 macro, 17-40 F4 L, 24-105 F4 L IS, 70-200 F4 L IS, 430 EX, Kenko 2X TC & Ext Tubes, AB strobes and more...
    View my photo galleries here: imageevent.com/24peter

  2. #12
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    May 2006
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    New Jersey
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    How about reverse 50mm+100mm macro+25mm ET ... bbbwwaaahahahahahahaaa!!!!




    That's not mine btw Here's the user's flickr page: http://www.flickr.com/photos/philippinosaur/

  3. #13
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    May 2005
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    Crapville, Australia
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    Quote Originally Posted by 24Peter View Post
    I think the only issue with tubes instead of a dedicated macro lens is the loss of light with the tubes, though I remember reading someplace that macro lenses also suffer from that at macro distances?
    Correct.
    Christian Wright; Dip Phot
    EOS 5D Mark III | EOS 600D | EOS-1V HS
    L: 14/2.8 II | 24/1.4 II | 35/1.4 | 50/1.2 | 85/1.2 II | 135/2 | 180/3.5 Macro | 200/2.8 II | 400/2.8 IS | 16-35/2.8 II | 24-105/4 IS | 70-200/2.8 IS II | 100-400/4.5-5.6 IS
    580EX II | EF 12 II | EF 25 II

  4. #14
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    Nov 2006
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    The canon 60 f2.8 unfortunately cant use tubes with AF, cant use my 1.4X TC either
    flickr
    dcrp shooter's on flickr

    7D,Bge7,Canon 70 200 F4L IS,Canon 17 40 f4L,Canon 100 2.8 Macro,Canon 400 5.6L,580 EX II,Tamron1.4XTC SP AF

  5. #15
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    Dec 2006
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    Quote Originally Posted by 24Peter View Post
    I think the only issue with tubes instead of a dedicated macro lens is the loss of light with the tubes, though I remember reading someplace that macro lenses also suffer from that at macro distances?
    i'm yet to experience that problem to any magnitude, if at all, and i've mounted them to the tamron 90mm/ sigma 150mm/ nikkor 105VR macro lens' and non macro on the 300/f4. i also have AF, metering and VR without any dramas.

    if there is any light loss, then it must be pretty insignificant cos like i said, i've never noticed it.
    D800e l V3 l AW1 l 16-35 l 35 l 50 l 85 l 105 l EM1 l 7.5 l 12-40 l 14 l 17 l 25 l 45 l 60 l 75
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  6. #16
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    What do you guys mean by light loss? Something similar to what happens when you pair a lens with a TC?
    Lukas

    Camera: Anonymous
    I could tell you but I wouldn't want you to get all pissy if it's the wrong brand

    Flickr

  7. #17
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    yes, light loss in the way you described. also heard issues with vignetting style loss in the corners of the frame. but again, i've not seen it.
    D800e l V3 l AW1 l 16-35 l 35 l 50 l 85 l 105 l EM1 l 7.5 l 12-40 l 14 l 17 l 25 l 45 l 60 l 75
    flickr

  8. #18
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    Quote Originally Posted by Rooz View Post
    yes, light loss in the way you described. also heard issues with vignetting style loss in the corners of the frame. but again, i've not seen it.
    With the full set of tubes on the 70-200 I noticed the light loss (darker VF), but with 20mm or so of tubes I really didn't notice any light loss or vingetting.
    Michael B.
    Canon 5D2, 550D, Sony NEX 5N, Sigma 15mm fish, 24L mkI, 35L, 40mm f/2.8, 50 1.8 II, Sigma 50 1.4, Sigma 50mm f/2.8 macro, 60mm macro, 100mm f/2, 70-200 f/4, 200 f/2.8 mk I, Tamron 28-75 f/2.8, 430EX. Growing list of MF lenses!

  9. #19
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    May 2005
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    Quote Originally Posted by TheWengler View Post
    What do you guys mean by light loss? Something similar to what happens when you pair a lens with a TC?
    In simple terms, when photographing at reproduction ratios of 1:1 (ie; life-size) there is a light loss of two f-stops.

    However, most macro lenses employ a floating optical system, meaning that the effective focal length is reduced as magnification is increased. This results in there being less light lost than would normally be the case.

    The Canon 180/3.5 is like this. At 1:1 this lens only loses 1.3 f-stops from memory.
    Christian Wright; Dip Phot
    EOS 5D Mark III | EOS 600D | EOS-1V HS
    L: 14/2.8 II | 24/1.4 II | 35/1.4 | 50/1.2 | 85/1.2 II | 135/2 | 180/3.5 Macro | 200/2.8 II | 400/2.8 IS | 16-35/2.8 II | 24-105/4 IS | 70-200/2.8 IS II | 100-400/4.5-5.6 IS
    580EX II | EF 12 II | EF 25 II

  10. #20
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    Aug 2007
    Location
    Brisbane, CA
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    Thanks for explaining guys.
    Lukas

    Camera: Anonymous
    I could tell you but I wouldn't want you to get all pissy if it's the wrong brand

    Flickr

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