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Did you preorder the 600mm f6.3 or 400mm f4.5?
Yes. I preordered the 600mm f6.3 GM
Yes. I preordered the 400mm f4.5 GM
Still on the fence. Would like to see more reviews and samples before deciding
No. Not interested or doesn’t make sense for my current lineup

600mm f6.3/400mm f4.5 preorder poll

  
 
mark1958
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p.2 #1 · 600mm f6.3/400mm f4.5 preorder poll


I have the 600/4, 200-600 and 400-800. I will only consider the 600/6.3 if the image quality including bokeh is much better than the 200-600. When I was on an African safari and later a trip to Vietnam -- the range the 200-600 offered was important. There were times that 600mm was too much. Of course for the bird photos-- would have been nice to have the 400-800mm or. the 600/4 with a TC. The reduced size and weight would definitely be a plus for hiking. Lets see some comparisons..


Sep 15, 2026 at 07:41 PM
shadow9d9
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p.2 #2 · 600mm f6.3/400mm f4.5 preorder poll


There are many similar alternatives out there, including 300 with 1.4.

eriet30 wrote:
Odd at this point and time in the poll I am the only 400 taker lol




Sep 15, 2026 at 07:47 PM
freaklikeme
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p.2 #3 · 600mm f6.3/400mm f4.5 preorder poll


Standing firm, personally, but I am excited to get our eval copies in at work. It should be a couple of weeks and I think we're getting the 400 first. It sounds like demand for the 600 is high.


Sep 15, 2026 at 07:55 PM
EB-1
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p.2 #4 · 600mm f6.3/400mm f4.5 preorder poll


freaklikeme wrote:
Standing firm, personally, but I am excited to get our eval copies in at work. It should be a couple of weeks and I think we're getting the 400 first. It sounds like demand for the 600 is high.


Yet the 600/6.3 has lesser IQ than the 400/4.5.

EBH



Sep 15, 2026 at 08:12 PM
Alex Phan
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p.2 #5 · 600mm f6.3/400mm f4.5 preorder poll


we going to see the used market flood with people selling the 400/600GM soon.



Sep 15, 2026 at 08:14 PM
arbitrage
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p.2 #6 · 600mm f6.3/400mm f4.5 preorder poll


Alex Phan wrote:
we going to see the used market flood with people selling the 400/600GM soon.


You buy those two lenses for the aperture.
If they bring out a 1kg 600/4 then I'll sell my 600GM



Sep 15, 2026 at 08:24 PM
aCuria
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p.2 #7 · 600mm f6.3/400mm f4.5 preorder poll


EB-1 wrote:
Yet the 600/6.3 has lesser IQ than the 400/4.5.

EBH


Do you have a source for this



Chelsea’s review put the 600/6.3 ahead of the 400/4.5 by a hair, but she did not exactly explain how the tests were done

See 8:03



See 13:00
- 600/6.3 vs 400/4.5 + 1.4x
- 600/6.3 + 1.4x vs 400/4.5 + 2x

Edited on Sep 15, 2026 at 08:50 PM · View previous versions



Sep 15, 2026 at 08:33 PM
dfreese
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p.2 #8 · 600mm f6.3/400mm f4.5 preorder poll


Source: trust me, bro.

aCuria wrote:
Do you have a source for this




Sep 15, 2026 at 08:39 PM
 


Search in Used Dept. 

RikWriter
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p.2 #9 · 600mm f6.3/400mm f4.5 preorder poll


I'm not believing any source until I have a production model in my hands.


Sep 15, 2026 at 08:58 PM
aCuria
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p.2 #10 · 600mm f6.3/400mm f4.5 preorder poll



RikWriter wrote:
I'm not believing any source until I have a production model in my hands.


Me too but the sources give an indication of what to expect



Sep 15, 2026 at 09:32 PM
EB-1
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p.2 #11 · 600mm f6.3/400mm f4.5 preorder poll


aCuria wrote:
Do you have a source for this


I was looking at just the data from Digtal Camera World.
https://www.fredmiranda.com/forum/topic/1955482/13#17107183

Hopefully we will see more technical tests over the coming weeks and months from production lenses. I have use for the socilai media types of U-Tubes.

EBH



Sep 15, 2026 at 09:54 PM
Roadless
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p.2 #12 · 600mm f6.3/400mm f4.5 preorder poll


From the reviews so far, the 600 will find a place in my backpack. I shoot primarily landscape, but like to shoot birds if I happen on something interesting. So I can put up with 1 kg in order to have the option to shoot birds.


Sep 15, 2026 at 10:48 PM
freaklikeme
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p.2 #13 · 600mm f6.3/400mm f4.5 preorder poll


EB-1 wrote:
Yet the 600/6.3 has lesser IQ than the 400/4.5.

EBH


These are eval copies. I think people are anxious to see for themselves.



Sep 15, 2026 at 11:23 PM
EB-1
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p.2 #14 · 600mm f6.3/400mm f4.5 preorder poll


I would assume they are worse since the samples are cherrypicked. I really want to see if a 1.4x is viable.

EBH



Sep 16, 2026 at 12:03 AM
olalafoto
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p.2 #15 · 600mm f6.3/400mm f4.5 preorder poll


Hey guys! I just pre-ordered the 400mm/F4.5 GM at my local Sony store. They aren’t sure about the shipping date yet, but they already have a demo lens in stock. Such a magical lens—crazy light, it honestly feels like holding a Stanley cup. I feel like I could easily hike 10 miles with this on my back!




Sep 16, 2026 at 02:18 AM
flash
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p.2 #16 · 600mm f6.3/400mm f4.5 preorder poll


I have pre-ordered the 600. I really like the range of the 100-400 4.5 so have no need for the 400 prime. I’m not planning om getting rid of my 600 f4 or Siggy 300-600. I’d prefer to use those but sometimes they’re too big for travel. The 600 6.4 is a real contender for my Antarctica rip in December/january along with the 100-400.

If anything is on the chopping block is my newly acquired 400 2.8.

Gordon



Sep 16, 2026 at 02:59 AM
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