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  1. #1
    Senior Member
    Fortkentdad's Avatar

    Stacking Teleconverters - why not

    Stacking Teleconverters - why not
    Who knew they can be stacked?

    Google it and there are a few youtubes and webpages where people have stacked two, or more T.C.'s to get more reach.

    Well I only have two so that will do. I had my TC's out with my 70-200mm 2.8 Nikkor to see how well they perform (they performed well)


    But when looking for some advice about TC's I stumbled upon https://petapixel.com/2015/02/05/sta...s-9600mm-lens/
    Oh my, not going there, but maybe two would work, like this guy tried Tale of Two Teleconverters in a more serious endeavour. And he stacked the same type of converters I have (1.4 + 2.0) The teleconverters are the Kenko "Pro 300" 1.4 and 2.0.

    Here's what that looks like
    Stacking Teleconverters - why not-dsc_5948-d500-nikkor-70-200-two-kenko-tcs-0001.jpg

    And here is my test shot - shot from one end of my house to the other, hand held. Lighting by a table lamp. Real test would have had good lighting and on a tripod. I did manual focus because it made some odd sounds when I pressed the autofocus button - but it did autofocus. I just didn't want to strain my autofocus motor. I wonder what I'd use this combo for? On this lens it gets me to 560mm (200x2=400 x1.4=560). But given I have a 200-500 5.6 I'm not sure I'd use it on this lens (unless I didn't have my 200-500 with me). But maybe I'll try it on my 200-500, then it would be 500x2=1000, 1000x1.4 =1400mm lens. And put that on my D500 and it has a 35mm equivalent of 2100mm lens. Woah. Maybe for something like a moon shot? Or ???

    Stacking Teleconverters - why not-dsc_2423-d500-nikkor-70-200-two-kenko-tcs-test-shot-0001_1.jpg


    But now I know it can be done. Don't know if I'd do it again, but it can be done.


    I also stumbled upon combining an TC with a macro extension tube plus a T.C. - already tried my TC on my 105mm 2.8 macro and it worked great. Never thought to combine them there Hmmmm Another day's play.


    › See More: Stacking Teleconverters - why not
    FKD Alberta Canada

    D500, D610, D7100, D5100

    Nikkor FX: AF 50 1.8,
    AFS 60 2.8, AFS 85 1.8, AFD 105 2.8, AFS 70-200 2.8 VRI, AFS 200-500 5.6.
    Nikkor DX: AFS 16-85 VR, AFS VR 55-300, AFS 35 1.8.
    Tamron: SP 24-70 2.8, SP 70-300 4-5.6, SP 17-35 2.8-4
    Tokina: ATX 11-20 2.8, Sigma: Art 50 1.4
    and a collection of Lensbabies
    Kenko 300 DGX 1.4X & 2X TC
    Godox AD360, AD200, 2 x V860, V350 SB-400, 600 & 700, Metz 58 AF2,
    and Benro Transfunctional Travel Angel to watch over me



  2. #2
    Senior Member
    mikew's Avatar

    Re: Staking Teleconverters - why not

    Stacking Teleconverters - why not
    Quote Originally Posted by Fortkentdad View Post
    Who knew they can be stacked?

    Google it and there are a few youtubes and webpages where people have stacked two, or more T.C.'s to get more reach.

    Well I only have two so that will do. I had my TC's out with my 70-200mm 2.8 Nikkor to see how well they perform (they performed well)


    But when looking for some advice about TC's I stumbled upon https://petapixel.com/2015/02/05/sta...s-9600mm-lens/
    Oh my, not going there, but maybe two would work, like this guy tried Tale of Two Teleconverters in a more serious endeavour. And he stacked the same type of converters I have (1.4 + 2.0) The teleconverters are the Kenko "Pro 300" 1.4 and 2.0.

    Here's what that looks like
    Stacking Teleconverters - why not-dsc_5948-d500-nikkor-70-200-two-kenko-tcs-0001.jpg

    And here is my test shot - shot from one end of my house to the other, hand held. Lighting by a table lamp. Real test would have had good lighting and on a tripod. I did manual focus because it made some odd sounds when I pressed the autofocus button - but it did autofocus. I just didn't want to strain my autofocus motor. I wonder what I'd use this combo for? On this lens it gets me to 560mm (200x2=400 x1.4=560). But given I have a 200-500 5.6 I'm not sure I'd use it on this lens (unless I didn't have my 200-500 with me). But maybe I'll try it on my 200-500, then it would be 500x2=1000, 1000x1.4 =1400mm lens. And put that on my D500 and it has a 35mm equivalent of 2100mm lens. Woah. Maybe for something like a moon shot? Or ???

    Stacking Teleconverters - why not-dsc_2423-d500-nikkor-70-200-two-kenko-tcs-test-shot-0001_1.jpg


    But now I know it can be done. Don't know if I'd do it again, but it can be done.


    I also stumbled upon combining an TC with a macro extension tube plus a T.C. - already tried my TC on my 105mm 2.8 macro and it worked great. Never thought to combine them there Hmmmm Another day's play.
    In the old days when most folks couldnt afford longer than 300mm we used to use a converter and ext tube for hide photography
    Mike

    Panasonic G80 Leica 100-400

    Nikon 1 V2,FT-1,10-30mm 30-110mm Viltrox extension tubes

    Olympus EM10 MK11,14-42,40-150








  3. #3
    Senior Member
    hark's Avatar

    Re: Staking Teleconverters - why not

    Quote Originally Posted by Fortkentdad View Post
    I wonder what I'd use this combo for? On this lens it gets me to 560mm (200x2=400 x1.4=560). But given I have a 200-500 5.6 I'm not sure I'd use it on this lens (unless I didn't have my 200-500 with me). But maybe I'll try it on my 200-500, then it would be 500x2=1000, 1000x1.4 =1400mm lens. And put that on my D500 and it has a 35mm equivalent of 2100mm lens. Woah. Maybe for something like a moon shot? Or ???
    Just remember you will lose 3 stops of light on the long end when stacking both teleconverters. 1 stop = f/8, 2 stops = f/11, and 3 stops = f/16 That would make your 200-500mm lens shoot at f/16 when wide open instead of f/5.6. I imagine it would be difficult to see clearly with so much light loss.

    Since I seem to have a software issue with my D750 (and no way for Nikon to fix it), I would be leary of trying it. Even in manual focus, they will try to communicate with your camera body. Personally I wouldn't take the risk of getting a glitch. You can stack extension tubes for close shots, but I'm not sure if teleconverters are designed to be used stacked. Anyway...have fun. Interesting concept nonetheless.
    Cindy
    Flickr
    and
    My 2017 Thread
    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci

    Nikon 14mm f/2.8; Nikon 16mm f/2.8 fisheye; Nikon 85mm f/1.8G; Nikon 105 f/2.8G micro VR; Nikon 180mm f/2.8; Nikon 300mm f/4 AF-S
    Nikon 18-35mm f/3.5-4.5G; Sigma 24-70mm f/2.8; Nikon 70-200mm f/2.8 VRII; Nikon 70-300mm f/4.5-5.6G VR


  4. #4
    Senior Member
    Fortkentdad's Avatar

    Re: Staking Teleconverters - why not

    Quote Originally Posted by hark View Post
    Just remember you will lose 3 stops of light on the long end when stacking both teleconverters. 1 stop = f/8, 2 stops = f/11, and 3 stops = f/16 That would make your 200-500mm lens shoot at f/16 when wide open instead of f/5.6. I imagine it would be difficult to see clearly with so much light loss.

    Since I seem to have a software issue with my D750 (and no way for Nikon to fix it), I would be leary of trying it. Even in manual focus, they will try to communicate with your camera body. Personally I wouldn't take the risk of getting a glitch. You can stack extension tubes for close shots, but I'm not sure if teleconverters are designed to be used stacked. Anyway...have fun. Interesting concept nonetheless.
    Loss of light is one big downside, if you need to shoot wide open.

    The sample shot above reported an F8 - but that was on a F 2.8 lens, on the F 5.6 lens it would be F16



    Had not thought that the lens trying to communicate to the camera could cause a glitch?

    I really don't see myself doing this with my D500 - I do use both of them with the 200-500 but not both.
    Thanks/Like hark Thanks/liked this post
     
    FKD Alberta Canada

    D500, D610, D7100, D5100

    Nikkor FX: AF 50 1.8,
    AFS 60 2.8, AFS 85 1.8, AFD 105 2.8, AFS 70-200 2.8 VRI, AFS 200-500 5.6.
    Nikkor DX: AFS 16-85 VR, AFS VR 55-300, AFS 35 1.8.
    Tamron: SP 24-70 2.8, SP 70-300 4-5.6, SP 17-35 2.8-4
    Tokina: ATX 11-20 2.8, Sigma: Art 50 1.4
    and a collection of Lensbabies
    Kenko 300 DGX 1.4X & 2X TC
    Godox AD360, AD200, 2 x V860, V350 SB-400, 600 & 700, Metz 58 AF2,
    and Benro Transfunctional Travel Angel to watch over me





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