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DPChallenge Forums >> Hardware and Software >> 1.4x(70-200mm 2.8) VS 300mm 4.0
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02/01/2009 04:47:52 PM · #1
Anyone have thoughts about the quality difference between the "Nikon 300mm f/4" and a "Nikon 70-200mm f/2.8" and a 1.4x teleconverter?
I guess i should specify that it's in the context of a full frame camera (D700)
Also, disregarding the small difference between the 300mm and the effective 280mm focal lengths
02/01/2009 05:34:13 PM · #2
I have no direct experience with the Nikon lenses, but I know that the behavior of the Nikon 70-200/2.8 is very similar to the Canon 70-200/2.8. The 70-200/2.8 + 1.4x will need to be stopped down 1 stop for best sharpness, making your fastest usable aperture f/5.6.
I don't know how good the Nikon 300/4 is, but if it is anything like the Canon it will be very sharp even wide open. If this is the case, the 300/4 has a great advantage. It also has the disadvantage of being a prime, but if you frequently need 300mm, it probably is the right choice.
02/01/2009 05:41:17 PM · #3
If your main interest is quality then go with the prime, if you need versatility then the zoom is better. I have had the Canon 70-200f2.8IS and a 2X converter and was not pleased with it, I have since aquired a 300mmF4IS and even with a 2X on that it is tack sharp.

I shoot on a FF camera too so the edges are important
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