24-105 with a TC ?

omega63

omega63

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Hi all can anyone recomend a 2 x TC to work with my 24-105 ??
 
Hi. My understanding is that tc only work on primes which is why I don't have one for my 70-200. save your pennies for a longer focal length?
 
I have an Jessops one that works but IQ aint that good going on holiday and dont want to carry my 70 - 200 and was wondering if there was a better one..
 
Hi

The 1.4TC will work with it and you'll still keep autofocus - you'll loose a stop -> the lens will become F5.6 from F4.

I think the 2TC will work, but on the 5D, you won't have autofocus with the 24-105 lens

Hope this helps
 
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Photodiva said:
Hi. My understanding is that tc only work on primes which is why I don't have one for my 70-200. save your pennies for a longer focal length?
Click to expand...

Hi

Yes, I think with the 2TC you loose autofocus on the 24-105 with the 5D body,
 
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Would need to be a non canon TC as the conon TCs petrude into the rear of the lens not owned a 24-105 I cant comment but unless it has a big gapping hole in the back like my 70-200 it wont work with the canon TCs.
 
i use a kenko pro300 1.4x on my 300mm prime and on my 24-105, works spot on with no noticable difference in iq :D
 
The canon TC's work with the L series lenses.

1.4x TC loses 1 f-stop of light (ex f4 - f5.6), autofocus hit, lens prone to hunting, no loss in IQs
2x TC loses 2 f-stops of light (ex f2.8 - f5.6), autofocus significantly hit, lens prone to hunting, loss in IQs

Canon XXXXD, XXXD, XXD, 7D and 5D bodies will only retain autofocus upto lens + TC combo f5.6, manual focus above f5.6

Canon 1D series camera's will autofocus upto f8, but only centre focus point above f5.6

the full f-stops are f2.8, f4, f5.6, f8, f11, f16 the one in between are 1/2 and 1/3 f-stops
 
pete.rush said:
The canon TC's work with the L series lenses.

1.4x TC loses 1 f-stop of light (ex f4 - f5.6), autofocus hit, lens prone to hunting, no loss in IQs
2x TC loses 2 f-stops of light (ex f2.8 - f5.6), autofocus significantly hit, lens prone to hunting, loss in IQs

Canon XXXXD, XXXD, XXD, 7D and 5D bodies will only retain autofocus upto lens + TC combo f5.6, manual focus above f5.6

Canon 1D series camera's will autofocus upto f8, but only centre focus point above f5.6

the full f-stops are f2.8, f4, f5.6, f8, f11, f16 the one in between are 1/2 and 1/3 f-stops
Click to expand...

TCs work better on the canon primes as these lenses are designed to work better with the TC. You can use TCs on the zooms like the 70-200mm f2.8 or 100-400mm f4.5-5.6 (manual focus) with differing degrees of success, but you need good light to acheive top performance.
 
i used a canon 2x on my 300mm f4 prime and its was carp..
but a friend used it on his 70-200 f2.8 and it was fantastic, focused perfect (was a sunny day) and i,q was tip top??

if money allowed i would love a 70-200 f2.8 but for now i'll just struggle on with a kenko pro 1.4x on my 24-105, i know it doesnt give much more focal length but for a £100 odd quid you cant go wrong as it doesnt effect iq and still retain autofocus @ f5.6!! :)
 
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