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Thread started 19 Jul 2013 (Friday) 05:00
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135mm 2.0L + 2x Tcon

 
davidfarina
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Jul 19, 2013 05:00 |  #1

Im looking to add a little more reach to my lineup.

The easiest and cheapest way for me would be to add a 2x teleconverter to the lineup.

What about the kenko 2x + 135L. On my crop that makes 430mm FOV f/4
I think the image quality will stay still very good since the 135L is a very sharp lens.

Will that work well with AF?

And will the MFD change after that?


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Canon ­ Bob
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Jul 19, 2013 05:52 |  #2

The MFD will increase by the physical length of the teleconverter.

Whether you'll be happy with the IQ using a 2x is really down to personal acceptance.

Bob


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nightcat
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Jul 19, 2013 05:58 |  #3

It won't be quite as sharp as a 200mm 2.8 with a 1.4X, and sharpest of all would be the 300mm f4. As Bob said, only you can say if you'll like the results. Yes, the 135mm is a very sharp lens, but you're asking a lot from any lens when you ask it to perform well with a 2X.




  
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jimewall
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Jul 19, 2013 06:01 as a reply to  @ Canon Bob's post |  #4

What Bob said. I think you will also want to use support with that combination much of the time.


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davidfarina
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Jul 19, 2013 06:08 |  #5

Canon Bob wrote in post #16134017 (external link)
The MFD will increase by the physical length of the teleconverter.

Whether you'll be happy with the IQ using a 2x is really down to personal acceptance.

Bob

So the MM increases too, thats great

Hmm so a longer lens with 1.4 or a supertele will do better...


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jimewall
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Jul 19, 2013 07:20 |  #6

davidfarina wrote in post #16134049 (external link)
So the MM increases too, thats great

Hmm so a longer lens with 1.4 or a supertele will do better...

I think you missed the point Bob was making on the MFD. The MFD does not change with a TC. Ok it does, by the the couple inches (the length of the TC moves the lens a couple of inches forward).

And yes it will do better with a 1.4X than a 2X, and all good super teles will do better than the 135L with a 2X TC.


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Canon ­ Bob
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Jul 19, 2013 07:36 |  #7

jimewall wrote in post #16134128 (external link)
I think you missed the point Bob was making on the MFD. The MFD does not change with a TC. Ok it does, by the the couple inches (the length of the TC moves the lens a couple of inches forward).

Yes, for clarity......
The minimum distance from the end of the lens to the subject (the working distance) remains the same. The minimum distance from the sensor plane to the subject (minimum focus distance) will increase by the physical length of the extender/teleconverter​.

Bob


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davidfarina
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Jul 19, 2013 09:12 |  #8

Canon Bob wrote in post #16134156 (external link)
Yes, for clarity......
The minimum distance from the end of the lens to the subject (the working distance) remains the same. The minimum distance from the sensor plane to the subject (minimum focus distance) will increase by the physical length of the extender/teleconverter​.

Bob

Yes i understood it still right haha

The MFD is then MFD+length of the TC because the lenses are now farer away from sensor plane.

Thought i dont need to know that then if you guys dont recommend me that ill better save up for an affordable tele :)


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Jul 19, 2013 11:02 as a reply to  @ davidfarina's post |  #9

If it were me, I would just get the Kenko MC4 1.4 TC and then add a Tammy 70-300 VC. 2x TCs give up too much IQ from what I have seen. Or just save up for a 70-200L or 70-300L.


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Jul 19, 2013 15:00 |  #10

FEChariot wrote in post #16134717 (external link)
If it were me, I would just get the Kenko MC4 1.4 TC and then add a Tammy 70-300 VC. 2x TCs give up too much IQ from what I have seen. Or just save up for a 70-200L or 70-300L.

Ibe heard only good things about the 100-400L despite the one touch zoom.


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FEChariot
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Jul 19, 2013 15:19 |  #11

davidfarina wrote in post #16135349 (external link)
Ibe heard only good things about the 100-400L despite the one touch zoom.

The IQ is pretty darn good. The thing I don't like is how you have to hold the lens at 400mm while still gripping the zoom ring. It puts it so far away from your body that you can't tuck your elbow into your ribs to help stabilize it like you can with most other lenses that size and smaller. That combined with the already weak 2 stop IS puts a damper on its hand holdablility. I can hold a simular sized 70-200/2.8 much more steady.


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davidfarina
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Jul 19, 2013 16:26 |  #12

FEChariot wrote in post #16135390 (external link)
The IQ is pretty darn good. The thing I don't like is how you have to hold the lens at 400mm while still gripping the zoom ring. It puts it so far away from your body that you can't tuck your elbow into your ribs to help stabilize it like you can with most other lenses that size and smaller. That combined with the already weak 2 stop IS puts a damper on its hand holdablility. I can hold a simular sized 70-200/2.8 much more steady.

Thanks for the input. I dont know its more the wannaa have factor which males me think like that. I dont think id use a long lens that much as im much more the street and people photographer. A long lens would be nice to have but anyway not affordable at the time since i bought a 50mm 1.2 :S


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FEChariot
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Jul 19, 2013 17:56 |  #13

davidfarina wrote in post #16135565 (external link)
Thanks for the input. I dont know its more the wannaa have factor which males me think like that. I dont think id use a long lens that much as im much more the street and people photographer. A long lens would be nice to have but anyway not affordable at the time since i bought a 50mm 1.2 :S

I still think the Kenko 1.4 MC4 @ $150 which would give you 189/2.8 and Tamron 70-300 VC would give you a lot of bang for the buck and still not make you feel too guilty if they only saw occasional use. I really wish I used my 70-200 more becuase the results are awesome but at an equivalent 112mm on crop, my needs are limited at least with my kids at their current ages.


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davidfarina
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Jul 19, 2013 18:58 |  #14

FEChariot wrote in post #16135758 (external link)
I still think the Kenko 1.4 MC4 @ $150 which would give you 189/2.8 and Tamron 70-300 VC would give you a lot of bang for the buck and still not make you feel too guilty if they only saw occasional use. I really wish I used my 70-200 more becuase the results are awesome but at an equivalent 112mm on crop, my needs are limited at least with my kids at their current ages.

Damn its only 400$ :O

You devil make me wanna spent all my money :P

Just joking but thanks for the recommendation ill reead some reviews and look if its my next lens maybe :)


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135mm 2.0L + 2x Tcon
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