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Thread started 18 Jul 2011 (Monday) 00:45
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is there any way to use the Extenders with this lens

 
moltengold
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Jul 18, 2011 00:45 |  #1

i had the
Canon EF 70-300mm f4-5.6L IS USM
and i want to use the :
Extender EF 1.4X III
Extender EF 2x III
and i think Canon web site didnt put this lens with the manual for these Extenders
is there any way to use any other Extenders with this lens ?

and thanks


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krb
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Jul 18, 2011 00:51 |  #2

You cannot use the Canon extenders but the less expensive Kenko extenders will work.


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moltengold
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Jul 18, 2011 01:12 |  #3

krb wrote in post #12777032 (external link)
You cannot use the Canon extenders but the less expensive Kenko extenders will work.

thank you so much
but i think that i saw some topics about these Kenko extenders
they use them for macro setup only


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moltengold
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Jul 18, 2011 01:19 |  #4

sorry my mind goes to the Kenko tubes


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GregoryF
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Jul 18, 2011 01:24 |  #5

Tamron, Kenko, Sigma extenders should all work.


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moltengold
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Jul 18, 2011 01:27 |  #6

GregoryF wrote in post #12777143 (external link)
Tamron, Kenko, Sigma extenders should all work.

thank you so much


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shoturtle
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Jul 18, 2011 01:27 |  #7

This one will work well

http://www.adorama.com …OSDGX.html#Prod​uctReviews (external link)


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moltengold
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Jul 18, 2011 01:30 |  #8

thank you so much


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Echo63
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Jul 18, 2011 03:29 |  #9

GregoryF wrote in post #12777143 (external link)
Tamron, Kenko, Sigma extenders should all work.

Sigma 2x WILL NOT work
it has the bit extending into the back of the lens like the Canon ones

(although it is a slightly different diameter than the canon one, a Canon 1.4 wouldnt fit my Sigma 70-200 f2.8, but the Sigma 2x was fine)


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moltengold
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Jul 18, 2011 04:06 |  #10

Echo63 wrote in post #12777466 (external link)
Sigma 2x WILL NOT work
it has the bit extending into the back of the lens like the Canon ones

(although it is a slightly different diameter than the canon one, a Canon 1.4 wouldnt fit my Sigma 70-200 f2.8, but the Sigma 2x was fine)

thanks

i saw it now at the amazon site
http://www.amazon.com …non-Digital/dp/B002C6QC3E (external link)

the kenko will work
but if i bought it for my zoom
shall i reach the length like the zoom :
Canon EF 100-400mm f4.5-5.6L IS USM


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MPCman
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Jul 18, 2011 04:14 |  #11

Don't forget to read the teleconverter sticky topic:
https://photography-on-the.net/forum/showthre​ad.php?t=41922

Unless you have a 1D(s) body, you will by default loose AF when adding a teleconverter to a lens with biggest aperture of 5.6.
Also, chances are that the lens is not super sharp at 300mm, if you add a teleconverter the softness is exagerated.
I would be hesitant to spending money on a teleconverter for this lens.


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moltengold
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Jul 18, 2011 05:46 |  #12

MPCman wrote in post #12777527 (external link)
Don't forget to read the teleconverter sticky topic:
https://photography-on-the.net/forum/showthre​ad.php?t=41922

Unless you have a 1D(s) body, you will by default loose AF when adding a teleconverter to a lens with biggest aperture of 5.6.
Also, chances are that the lens is not super sharp at 300mm, if you add a teleconverter the softness is exagerated.
I would be hesitant to spending money on a teleconverter for this lens.

thank you so much for all the information


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moltengold
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Jul 18, 2011 05:50 |  #13

by the way
this lens is too sharp on my 5D Mark II even in low light inside the house
but when i use it on the canon 60D i feel im loosin a little bit of sharpin
so i will do with yr advice


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pwm2
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Jul 18, 2011 06:18 |  #14

moltengold wrote in post #12777690 (external link)
by the way
this lens is too sharp on my 5D Mark II even in low light inside the house
but when i use it on the canon 60D i feel im loosin a little bit of sharpin
so i will do with yr advice

The 60D have smaller pixels in the sensor, so while only capturing the center part of the lens because of the smaller sensor, it will put a higher demand on the lens for this portion than the 5D2.


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Jul 18, 2011 08:02 as a reply to  @ pwm2's post |  #15

I suggest you consider the below:


http://www.bhphotovide​o.com …TelePlus_MC4_AF​_1_4X.html (external link)

Test results:

http://www.traumfliege​r.de …elekonverter/ov​erview.php (external link)

Regards, ;)


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is there any way to use the Extenders with this lens
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