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Thread: Macro Question

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    Member tull777's Avatar
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    Default Macro Question

    My wife surprised me with a Canon 100mm macro lens for Christmas.

    I know I know ...She's a keeper!

    I have a 1.4 teleconverter and I'm wondering ...Will I get better result with extension tubes instead of the 1.4-TC? I know that the tubes do not have glass and teleconverters do. Looking for the right combo that will give me the best results.
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    http://www.eddiefisherphoto.com/


    "If you're too open-minded, your brains will fall out. ....."Tight Lines & Best Fishes"

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    Quote Originally Posted by tull777 View Post
    My wife surprised me with a Canon 100mm macro lens for Christmas.

    I know I know ...She's a keeper!

    I have a 1.4 teleconverter and I'm wondering ...Will I get better result with extension tubes instead of the 1.4-TC? I know that the tubes do not have glass and teleconverters do. Looking for the right combo that will give me the best results.
    The lens should get you pretty close to the subject without a Kenko tube or tele-converter. Adding a tube will allow you to physically get the front glass of the lens within an inch from the subject. But the lens alone (without a tube) keeps you away from the bee, and still provide you with a close-up of the bee. You will have to decide how close you want to place the glass to the subject, but if the subject can't be disturbed, then you can get the glass within a fraction of an inch.

    I took this picture with a Sigma 70-300 mm that has a macro switch. This feature only works on 300 mm, so the camera and lens were approximately six feet from the splashing water. If I would have used a Kenko tube with the lens, then the water would have splashed all over the camera.


    Then this one, of a willow bud (flower). I was standing about six feet from the flower, and I imagine that you should be able to do the same from three feet of distance instead of six:


    I believe that you use Canon? If so, join this forum and take a look at the photos in the Macro Photography Forum. These folks are rally into macro, and they will answer any questions you may have related to macro gear of all sorts. These guys (and girls) are true macro picture takers, since they often show the eyes of a fly, a mosquito, etc. They use macro lenses and tubes. Keep in mind that when the glass gets real close to the subject light becomes an issue. That's why lots of micro-photographers use a ring flash.
    http://photography-on-the.net/forum/index.php

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    Personally I would use the extension tubes over the teleconverter. They come in several different sizes.
    The less you add the less chance there is of any distortion.
    Tennessee

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    Both will cost you some light, one stop from the 1.4x TC, and perhaps the same from enough tubes to get you to 1.4:1.

    As far as image quality, I suspect Snowolfe is right. Besides, teleconverters are generally optimized for long lenses, and may not perform as well at 100mm. Actually, the Canon 100mm macro is internal focusing, so at 1:1 it's focal length is more like a 70mm -- even worse for a TC. Image quality may not be degraded much though, so you ought to try it. The advantage of the TC is that it allows a greater subject distance than tubes or diopters.

    Either way, macro beyond 1:1 is not easy to do well. You may decide you like the 100mm the way it is. On a crop frame camera effective image magnification (not the real stuff, but...) is increased by 1.6x already.

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    I decided to post the link below for those who may be interested on macro photography. This guy is real good at it, and offers free lessons that are easy to follow:
    http://www.dgrin.com/showthread.php?t=50752

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    Member tull777's Avatar
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    Default Awesome!

    Excellent ...Awesome!!! Thank you for sharing this. This guy is really good.

    http://www.pbase.com/tull777

    http://www.eddiefisherphoto.com/


    "If you're too open-minded, your brains will fall out. ....."Tight Lines & Best Fishes"

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    Quote Originally Posted by tull777 View Post
    Excellent ...Awesome!!! Thank you for sharing this. This guy is really good.

    When you have the time, take a look at the lesson on "double-stacking." He focuses the lens on the subject's foreground and then takes a photo, then he focuses the lens on the rest. That way he has two or three identical photos of the subject, then he combines the two or three photos. The result is a photo with a deep depth of field with the whole subject in focus, not just part of it. He posts some of his photos at the Canon "Macro" forum I posted above somewhere.

    His lessons are very easy to understand.

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    Member tull777's Avatar
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    Quote Originally Posted by RayfromAK View Post
    When you have the time, take a look at the lesson on "double-stacking." He focuses the lens on the subject's foreground and then takes a photo ...
    Oh Ya, I just read about his bit on stacking ...Amazing! I will be trying it this weekend.

    Thanks again!

    http://www.pbase.com/tull777

    http://www.eddiefisherphoto.com/


    "If you're too open-minded, your brains will fall out. ....."Tight Lines & Best Fishes"

  9. #9
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    use both ex tubes and a tc to get really really close
    I choose to fly fish, not because its easy, but because its hard.

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