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Archive 2017 · 70-200 2.8 GM with 2x vs 70-400 G2 a-mount with adapter

  
 
garyroach
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p.1 #1 · p.1 #1 · 70-200 2.8 GM with 2x vs 70-400 G2 a-mount with adapter


Has anyone compared the Sony 70-200mm f2.8 GM with the Sony 2x teleconverter to the Sony 70-400mm G2 a-mount with LAEA3or4 adapter. If so, what were the results? I have the 70-200 GM and the 70-400 G2 a-mount, but I don't have the 2x teleconverter. I'm wondering if I should buy the 2x and sell the 70-400. I don't have any other a-mount cameras or lenses. I just use the 70-400 with a LAEA3 as a super telephoto on my a7II. I would be interested in how they compare not only in image quality, but speed of autofocus, losing focus, hunting, etc. Thanks for your replies.

Edited on Mar 03, 2017 at 06:09 PM · View previous versions



Mar 03, 2017 at 03:49 PM
virtualrain
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p.1 #2 · p.1 #2 · 70-200 2.8 GM with 2x vs 70-400 G2 a-mount with adapter


I've been after a comparison like this here and elsewhere and so far... <crickets>. . Lots of speculation but no head to head testing that I'm aware of. I would encourage you to rent or buy the TC (if returning it easy). But I'm afraid, the IQ differences on the A7II may not be all that significant. I really want to see how these two 400mm solutions perform on an A7RII.


Mar 03, 2017 at 05:05 PM
garyroach
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p.1 #3 · p.1 #3 · 70-200 2.8 GM with 2x vs 70-400 G2 a-mount with adapter


Just rented the 2x tele, but it won't arrive until next week. I'm sure I'll upgrade to the A7rII at some point. So, I would be interested in the lens comparisons regardless of which camera you are using.


Mar 03, 2017 at 05:28 PM
virtualrain
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p.1 #4 · p.1 #4 · 70-200 2.8 GM with 2x vs 70-400 G2 a-mount with adapter


garyroach wrote:
Just rented the 2x tele, but it won't arrive until next week. I'm sure I'll upgrade to the A7rII at some point. So, I would be interested in the lens comparisons regardless of which camera you are using.


Awesome. I look forward to your assessment.



Mar 03, 2017 at 08:06 PM
garyroach
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p.1 #5 · p.1 #5 · 70-200 2.8 GM with 2x vs 70-400 G2 a-mount with adapter


Ok, I've had time to shoot both the 70-400 G2 with e-mount adapter and the 70-200 GM with 2x teleconverter. Both lenses were shot on my A7II handheld and on a tripod. It's obvious that the 70-400 is better in image quality and focusing. IQ on the 70-200 with 2x is good, but the 70-400 is better overall at all focal lengths and apertures. I might also mention that the IQ on the 70-200 2.8 GM without the teleconverter is as good as any I've ever seen on a 70-200 zoom lens. Focusing speed is about the same on the 70-200 with 2x as the 70-400 G2 up until f11. Then, for some reason, the 70-200 with 2x tends to hunt before settling on focus. It did this outside on a sunny day with the subjects in indirect and in mostly direct sunlight. The 70-400 G2 had no trouble focusing on the same subjects. My conclusion is that the 70-400 G2 is the obvious winner here. Since I already have the 70-400 I will be keeping it and using it when I need something in the 200-400mm range. The only reason I can see using the 70-200 with 2x is for travel when you just don't want to carry two telephoto lenses. I might buy the 2x some time in the future if I find a deal on it. But, hopefully, by then Sony will have more long teles available in e-mount.




Mar 08, 2017 at 01:32 PM
virtualrain
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p.1 #6 · p.1 #6 · 70-200 2.8 GM with 2x vs 70-400 G2 a-mount with adapter


garyroach wrote:
Ok, I've had time to shoot both the 70-400 G2 with e-mount adapter and the 70-200 GM with 2x teleconverter. Both lenses were shot on my A7II handheld and on a tripod. It's obvious that the 70-400 is better in image quality and focusing. IQ on the 70-200 with 2x is good, but the 70-400 is better overall at all focal lengths and apertures. I might also mention that the IQ on the 70-200 2.8 GM without the teleconverter is as good as any I've ever seen on a 70-200 zoom lens. Focusing speed is about the same on the
...Show more

I'm curious what you think of this image from another review of the lens with 2x TC I came across... the extreme edges aren't great but most of the rest of the frame is very sharp.

Here's the RAW file: ftp://rawdata.slrclub.com/lens/sony/1609_FE70200GM/a10.ARW


a10 by VirtualRain (Junk Photos), on Flickr

Here's a 100% crop of the center, but it looks sharper than this in Capture One Pro. Flickr isn't doing it full justice, you really should download the RAW file.


Screen Shot 100% Crop by VirtualRain (Junk Photos), on Flickr



Mar 08, 2017 at 09:00 PM





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