Closeup filter Vs Tele-Converter


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sumball

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Jul 8, 2003
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#1
Would like to know more about the differences between this two and the pros and cons for both of them. Is the 2x TC a good idea for shooting bird or something far if I dun wan to invest in a 600mm lens but a 300mm lens?

:think: :confused: :confused:
 

chrisleng

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Mar 18, 2004
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You will need to take note of the few stop drop when using 2x convertor before buying it

For instance for Canon 2x :

EF300mm f2.8L -> 600mm f5.6
EF300mm f4 -> 600mm f8
 

Caussway

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#3
Beside loss of light, 2x TCs will also cause loss in image quality. It depends on you whether you can trade the image quality for the reach. A 1.4x TC seems imposes very minimum quality loss. Check the image output from various combination and ask advice from those who're using the lens you planed to buy.
 

sumball

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Jul 8, 2003
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#4
chrisleng said:
You will need to take note of the few stop drop when using 2x convertor before buying it

For instance for Canon 2x :

EF300mm f2.8L -> 600mm f5.6
EF300mm f4 -> 600mm f8
Thanks chrisleng, will this f-stop reduce be indicating on the metering? Or I have to compensate it by myself?

Thanks a lot for your explanation.
 

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