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Archive 2014 · 300mm f/4 and 1,4x to 100-400 II

  
 
Coltrane
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p.2 #1 · p.2 #1 · 300mm f/4 and 1,4x to 100-400 II


Another thing to point out in comparing these 2 lenses... On the zoom, when you shoot at 300mm, I believe you are shooting at 5.0. This isn't much different than 4.0, but it's worth noting when making a choice.


Jan 03, 2015 at 08:07 AM
technic
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p.2 #2 · p.2 #2 · 300mm f/4 and 1,4x to 100-400 II


Cadaver wrote:
Another thing to point out in comparing these 2 lenses... On the zoom, when you shoot at 300mm, I believe you are shooting at 5.0. This isn't much different than 4.0, but it's worth noting when making a choice.


Given the huge premium people pay for the f/2.8 instead of f/4.0 version of the 300mm, I'm surprised the difference between f/4.0 and f/5 is hardly mentioned (in reality close to one stop because of the extra vignetting with the zoom).



Jan 03, 2015 at 08:30 AM
EB-1
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p.2 #3 · p.2 #3 · 300mm f/4 and 1,4x to 100-400 II


billsnature wrote:
Note for same magnification, you need to be much closer with 100-400 II that with 300mm f4 IS without the TC and way closer when you add the 1.4X TC to the 300mm.....Can you say focus breathing? Sure you can.(

technic wrote:
Yes, this is an important factor e.g. for skittish insects or when you can't get closer for other reasons. I'm using the 4/300IS for this type of shots and the 100-400II sounds attractive because of the better IS and flexibility, but it's difficult to weigh the pros and cons for closeups. Is the new zoom worth the huge price difference, higher weight and losing (almost) a stop in aperture? Is the 100-400II AF faster and at least as accurate despite the slower aperture? I guess the new zoom is an easy choice if you need at least 400mm most of
...Show more

The AF of the 100-400 II is quite fast, and noticeably faster than the 300/4 IS.
The 300/4 IS was the first Canon lens I ever purchased and the CA was obvious to me on Velvia back then. I got another 300/4 IS around 2010 and it was about the same or perhaps a bit better.

EBH



Jan 03, 2015 at 06:17 PM
billsnature
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p.2 #4 · p.2 #4 · 300mm f/4 and 1,4x to 100-400 II


I won't post pictures because they are just boring resolution charts taped to a piece of wood.

But here is my take:

100-400 II VS 400mm f5.6 @ 5.6 and f8 - Closer than I ever would have expected. Might give slight edge in micro contrast to 400mm f5.6, but resolution very similar. In real world I don't think you would see a difference and considering the difference in # elements that is saying a lot for new anti-reflective coatings.

100-400 II VS 300mm f4 IS plus 1.4X f5.6 and f8- Difference in AF speed is like the difference between shooting a bullet and throwing a bullet. Contrast and sharpness better in zoom.

100-400mm @300mm VS 300mm f4 IS at f5.6 and f8 - At f5.6 the 300mm looks slightly better. Difference not large but slight. At f8 where both lenses are stopped down, now they are same or 100-400 II slightly better contrast and color.

100-400 @300 VS 70-300mm L @300 100-400mm II is slightly better at both 5.6 and f8

100-400@ 200mm VS 70-300L @ 200mm - both look very good, but might give edge to 70-300 at f5.6 and 100-400 II at f8

Might try some hand held stuff today, but I expect the new IS to crush IS in 300mm.

If it ever stops raining here I would love to test outdoors.

Bill



Jan 04, 2015 at 12:21 PM
gspiridakis
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p.2 #5 · p.2 #5 · 300mm f/4 and 1,4x to 100-400 II


Thanks for your replies!

Billsnature your comparison is very interesting and informative of course!

George



Jan 06, 2015 at 05:48 PM
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