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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 02 May 2016 (Monday) 16:40
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Canon 300mm F/4 L IS USM vs Canon 100-400 L IS USM II

 
cwphoto
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May 04, 2016 21:29 |  #16

CyberDyneSystems wrote in post #17994782 (external link)
Just get the MkII 100-400mm.

It beat out and replaced two lenses (at least) for me, the 400mm f/5.6L prime, and the older 100-400mm Mark I.

The 300mm has old slow AF, (not bad, but not as fast as either the new 100-400mm or the older 400mm f/5.6L prime) it has old 1st gen IS.

The Zoom will equal the 300mm prime at 300mm, and will beat it outright once you need a TC to get beyond 300mm.

Totally concur with this, I think the 300/4 IS is looking tired now with all the improved optics and running gear the new lenses have.

Mine often had a back-focus issue too.

100-400/4.5-5.6 IS II all the way. It's a really good lens.


EOS-1D X Mark II| EOS 5D Mark IV | EOS 80D | EOS-1V HS
L: 14/2.8 II | 17/4 | 24/1.4 II | 24/3.5 II | 35/1.4 II | 50/1.2 | 85/1.2 II | 100/2.8 Macro IS | 135/2 | 180/3.5 Macro | 200/2.8 II | 300/2.8 IS II | 400/2.8 IS II | 500/4 IS II | 600/4 IS II | 8-15/4 Fisheye | 11-24/4 | 16-35/2.8 III | 24-70/2.8 II | 70-200/2.8 IS II | 100-400/4.5-5.6 IS II | 200-400/4 IS 1.4x
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Tom ­ Reichner
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May 05, 2016 10:07 |  #17

PCousins wrote in post #17993453 (external link)
At 300mm there is no doubt the Prime will be better for speed and sharpness, At 300mm on the zoom the aperture will be f/5, yes the zoom has the flexibility but at 300mm ONLY the Prime will win all round hands down.

Actually, there is doubt. While I don't own the 300mm f4 anymore, I do still have the 400mm f5.6 prime. The new 100-400mm zoom is sharper than the prime. The zoom's autofocus is also faster to acquire focus than that of the prime.
Why do you think that the sharpness and AF ability of the 300mm prime is better than the new 100-400mm? Is this based on fact or experience, or is it just based on supposition?

St Bernard wrote in post #17993405 (external link)
Looking at both lenses for general use photography. How does the 300mm L lens compare to the 100-400 lens at the same focal length at 300mm? Is the 100-400L better than the 300L at the 300mm f/l?

Comparing both lenses at the same focal length involves two factors that can be significant, depending on what you are shooting and how you are shooting it:

1: The zoom has the latest generation of 4 stop image stabilization, while the prime has a very old generation of IS that gives you one and a half stops.

2: The minimum focus distance of the zoom is 3.2 feet, while that of the prime is 4.9 feet. And of course the zoom can focus at 3.2 feet not only at 300mm, but also at 400mm. The difference is HUGE if you are into photographing butterflies, bees, lizards, leaves, flowers, etc, etc, etc.

St Bernard wrote in post #17995103 (external link)
I think after doing allot of reading and the response here I will get the new 100-400L IS USM II. I have a new Canon 80D also. I have a EF 1.4 III extender now that should go fine with the 100-400 when I get it. It looks like a no brainer getting the 100-400 Lens. Thanks to all that left feedback appreciated. Bill

You're right; it is a no brainer. Great decision - I think you will be extremely please with the new 100-400mm.

.


"Your" and "you're" are different words with completely different meanings - please use the correct one.
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"Fare" and "fair" are different words with completely different meanings - please use the correct one. The proper expression is "moot point", NOT "mute point".

  
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Canon 300mm F/4 L IS USM vs Canon 100-400 L IS USM II
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