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Old 05-02-2013, 07:55 PM
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astronobob (Bob)
Casual Cosmos Capturer

astronobob is offline
 
Join Date: Jun 2010
Location: Gold Coast SE QLD
Posts: 4,469
Advise with 1.4x Canon Teleconverter

Hi all,
I was after some advice and any opinions with the use of a 1.4x teleconverter. As im on a low budget, obtaining lenses & telescopes for every occassion is, well, virtually Life Threatening : )

I now am contemplating on purchasing a 1.4x converter for my 600D, primarily with the Canon 70-200 F2.8 non IS 'L' Lens effectively giving it a 280mm F/L, good for astro and terrestrial situations !
I realise that the appeture will forceably be reduced by one stop, hence why only interested in the 1.4x, as the 2x will have a 2 stop reduction, ok for terrestrial, but not so kind for astro !

Advice is mainly needed to determine quality for value, though any other advice welcome ?
I also intend on trying the 1.4 with the 8" F/4, could be interesting, though Im not sure what a one stop difference would turn the F/4 ratio to ? ? Any ideas there also welcome ?

Here are a couple of links : Cameras Direct have a couple of brands, maybe cheap and nasties ?
And Links to the Canon brands, Cheers !

Cameras Direct
http://www.camerasdirect.com.au/acce...roducttype=801

Canon type III
http://store.canon.com.au/our-produc...der-ef-14x-iii


Canon Type II
http://store.canon.com.au/our-produc...der-ef-14x-iii
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