Which converter 1.4x or 2x

[Top-Cat]

I have just purchased two new lenses, a Canon 70-200mm f2.8L IS and a Canon 100-400mm f4.5-5.6L IS.
I’m thinking of getting a converter but was not sure which one to get the 1.4x EF MK2 or the 2x EF MK2.
I have been told that the 2x doesn’t give as good an image quality as the 1.4x is this true.
Any input would be very much appreciated.



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Eos 10D With Grip
16-35mm f2.8L
24-70mm f2.8L
70-200mm IS f2.8L
100-400mm IS f4.5-5.6L
100mm Macro
550EX Speedlight

[msnow]

Do a search for this topic. It's been covered several times I believe.

[Cadwell]

I have just purchased two new lenses, a Canon 70-200mm f2.8L IS and a Canon 100-400mm f4.5-5.6L IS.
I’m thinking of getting a converter but was not sure which one to get the 1.4x EF MK2 or the 2x EF MK2.
I have been told that the 2x doesn’t give as good an image quality as the 1.4x is this true.
Any input would be very much appreciated.


The image quality is noticeably worse with the 2x. Also you should bear in mind that you will have no auto-focus on the with the 100-400 using either TC.

[danphoto1]

I agree with Cadwell 1.4 will work with both lenses and the 2x will lose a lot of image quality . even the 1.4 can be difficult to use with 70 to 200 unless yours is an IS lens. the 100 to 400 will be a little slower with the 1.4 . I have both lenses and the 1.4

Dan