Teleconverters in photography – Photography podcast #31

November 2, 2007 on 10:27 am | In Photographs, Photography podcasts, podcasting

Photography podcast #31 is all about teleconverters. Teleconverters are an apparatus that you put between the body of your SLR or DSLR camera and the lens. It then increases the effective focal length of the lens on the camera. In this podcast we discuss their advantages and disadvantages.

Thanks again to Norm for his comment on last week’s podcast reflectors in photography.

New segment again this week – PHOTO OF THE WEEK
This week, the photograph is by Zseike and I comment in the podcast on why I think this photograph is fantastic.
Image removed at Zseike’s request.

You can download this photography podcast directly by clicking first link or listen to it almost immediately with the embedded player below the photographs.

Podcast: Play in new window | Download

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  1. Thanks for this podcast! Being new to the art, I’m still exploring the tools and equipment, any equipment-related topics and tips would be great!

    Comment by Al — November 4, 2007 #

  2. Thanks for the clear and deliberate explanation on how to use a teleconverter. I have been mulling about this decision for some time now and I think your podcast will finally be the straw that breaks the camel’s back – in favour of adding one to my kit.

    If I could only make one suggestion, for future podcasts obviously, it would be a linguistic one: try not to overuse key words such as “wicked” since once repeated, it loses its original distinguishing value – in my humble opinion.

    Comment by Rob — November 4, 2007 #

  3. Thanks for those comments Rob and Al. You are right Rob…I used wicked too often when there are so many other synonyms out there.
    Thx!

    marko

    Comment by admin — November 5, 2007 #

  4. Hi Marko,

    Great podcast on teleconverters. I have been contemplating these recently for nature photography. I have a question. Doesn’t the DLSR’s image sensor’s crop factor also add the the effective length of the lens? I have a Canon Rebel XT with a 1.6 crop factor. If a use a 200mm lens and a 1.4x convertor, do I get 200 x 1.6 x 1.4 for an effective length of
    448 mm relative to 35mm camera?

    Thanks,
    Daron

    Oh, I love the photo of the week. Great find.

    Comment by daronj — November 7, 2007 #

  5. Hey Daronj,

    Thx for the compliment!
    DOH! I neglected to put that in the podcast – EXCELLENT QUESTION.

    Your principal is correct and your math is correct.

    Just for learning purposes I would suggest it’s clearer to say 200 x 1.4 x 1.6 where 1.4 is the teleconverter factor and 1.6 is the crop factor for digital SLR cameras with a crop factor. same diff though, and THANKS for pointing that out. Best! Marko

    Comment by admin — November 7, 2007 #

  6. Thanks Marko. Sorry I didn’t give you enough info on the camera I have or what I intended to use the teleconverter for. I’ve just upgraded to a Canon XTi and I love doing nature and landscape pictures. Thankfully you understood my question, and thanks for your insite on teleconverter lens. With a 1.4×11 I beleive I can finally get a good clear picture of the hawk in his nest, with the lens I have. Thanks again Cindy

    Comment by Cindy — November 18, 2007 #

  7. [...] Thanks as always for comments by Rob, Al, DaronJ and Cindy on our last podcast on photography teleconverters . Thanks very much to Samirah and Tegan, members of our photography forum for their suggestions on future podcasts. We LOVE comments and suggestions so please send more. You can download this photography podcast directly by clicking first link or listen to it almost immediately with the embedded player below the photographs. [...]

    Pingback by Multiple exposure in photography - Photo podcast #32 — November 27, 2007 #

  8. Hi, I just heard this episode today, and wanted to point out that you kept referring to these as “lenses”.
    And even made a statement about the “glass” in it at one point in the podcast.

    I would really hope you realize that teleconverters are just empty tubes. They are not a lens! :-)

    Thanks

    Comment by Mike — September 11, 2008 #

  9. I stand corrected.
    I didn’t realize they did indeed have glass in them.

    Never mind.. .

    Comment by Mike — September 11, 2008 #

  10. Just started listening to the podcast, started at the beginning and making my way through them, taken 2 days so far heh.. Loving the podcast, great information and it’s fuelling my love for photography :)
    In quick response to Mike above, I think you were thinking of extension tubes, they don’t have glass in them, but they are generally used for macro photography to increase the magnification by allowing you to move closer to the subject. I got half way through this podcast and realised I was thinking about extension tubes initially :)

    Cheers for all the info, and I’ll keep plodding through the casts, hopefully I’ll be up to date in a day or two heh.

    Comment by Mark Compton — September 24, 2008 #

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