Sony FE 600mm f/4 GM OSS - Early Field Testing

dcstep

Senior Member
Messages
2,524
Solutions
4
Reaction score
2,047
Location
Colorado, US
It's Friday and I received my FE 600mm f/4 GM OSS on Tuesday, so it seems early to write a review, but I'm so happy that I can't resist.

I've been shooting super telephoto lenses since 2008, starting with an EF 400/f5.5, then quickly moving up to the EF 500/f4 I, moving to the EF 500/f4 II when it became available. I continued to use my EF on my Sony a9/a7RIII bodies, until the FE 400mm f/2.8 GM OSS became available and then I added the FE 600/f4 this week.

I'm primarily a bird and wildlife shooter and probably take 3000 to 10000 super-telephoto shots per week. I've got 3800 shots on my 600/f4 in around 5-hours of shooting. 99.9% of my shots have been handheld, since 2010.

First, as a hand holder, I greatly appreciate the big Sony's light weight, easy balance and lightening quick AF. (I've only used it on my a9 so far). It's only .3-lbs heavier than the 400/f2.8. I worked a Swainson's hawk for 45-minutes on Wednesday. Yes, I had a huge burn going on in my arms, shoulders and hands, but it was manageable. I had to shake and rub it out after that session, but I got it done. I would have had to go down to my 100-400mm for a reasonably lighter load. The new 200-600mm is an option for those that can't handle a big lens, but this 600/f4 sets a new standard for manageability for such a long, fast lens.

On the a9, the AF is close to astounding. There's a focus limiter, but I'm keeping the lens on "Full" almost all of the time, since there seems to be almost no lag when going from a subject at 15' to one at 100'. It literally snaps into focus from one to another. I've really only used the bare lens so far, but I expect that the 1.4x teleconverter will only add micro-seconds of lag, if any, and the 2.0x will be barely noticeable. Compared to the 400/f2.8 with the 1.4x teleconverter, I think that I notice an improvement in AF acquisition speed, but I can't validate that. I do know that I'm often getting series shots, from 60 to 136-bursts, with every frame in sharp focus for slow flying birds. (Egrets, vultures, herons).

I'll do some test and comparison shots in the future, but, for now, here are some field shots:



fd31603626c74b668737af98a4b2e746.jpg

That's around and 80% crop of the bushtit. Look at that bokeh and sharpness by going to the Gallery and viewing it 100% on full-page.



354b1208b34a411d8e05227772fffca2.jpg

Another 80% crop. Look at the fish's eyes.



68d3ab8deb224609b82c6aff67c83d32.jpg

Only a small crop here. Look at the eye and fur at 100%.



62f995cba0ca415c94cefa5c2e2c9e98.jpg

Toward the end of a series of 60-shots, with the bird having gone from bright, full sun to deep shadow (explaining the high SS). EVERY shot in this series had focus this good.

Anyone want a 400/f2.8 for $11,500? ;-)

Later, I'll add some shots with teleconverters and compare detail on a static subject. For now, I'm absolutely convinced that this lens is the best bird lens that you can buy from any maker. I love it and I'm keeping it.

--
Dave
 
I took around 400-shots today, with the lens mounted on my a7RIII. This is always tempting, because of the resolution, but then I quickly remember that the a7 AF is not even the same ballpark as the a9.

In my first outing, with the lens on the a9, a turkey vulture soared around and I got 136 out of 136 sharp images. Same bird, but with the a7RIII this time and I got just less than 100 in focus. Also, even with such a slow bird, tracking is hard because of the black-out of the EVF.

For perched birds, going for resolution, the a7RIII will be fine, but it's a relative fight for BIF, which are easy-peazy with the a9.

So, surprise, surprise, no miracle occured.
 
I took around 400-shots today, with the lens mounted on my a7RIII. This is always tempting, because of the resolution, but then I quickly remember that the a7 AF is not even the same ballpark as the a9.

In my first outing, with the lens on the a9, a turkey vulture soared around and I got 136 out of 136 sharp images. Same bird, but with the a7RIII this time and I got just less than 100 in focus. Also, even with such a slow bird, tracking is hard because of the black-out of the EVF.

For perched birds, going for resolution, the a7RIII will be fine, but it's a relative fight for BIF, which are easy-peazy with the a9.

So, surprise, surprise, no miracle occured.
100 out of ?
 
  • Like
Reactions: Lan
...

In my first outing, with the lens on the a9, a turkey vulture soared around and I got 136 out of 136 sharp images. Same bird, but with the a7RIII this time and I got just less than 100 in focus. Also, even with such a slow bird, tracking is hard because of the black-out of the EVF.

...
100 out of ?
Oops. 100 out of 132.
 
Thank you so much for sharing your photos
 
thats a lot of noise for iso 640
Any comment? Is it normal for A9?
DPR doesn't have a test scene shot at ISO 640, but here is a comparison at 800 so you can see what raw noise looks like compared to a couple of other 24MP-ish full frame cameras, and your XT-3.

https://www.dpreview.com/reviews/im...=1&x=0.7720462083952876&y=-0.5376344086021507
Thanks I see. And even more confused because A9 is in the best class on DXmark. A9 (or upcoming A9II) is on my wish list. In my country I cannot rent it. In the past I have experience in wildlife with 300/f2.8 & 600/f4 and other FF cameras in the class of A9. The noise in OP photos are for sure not good and I'm disappointed.
 
thats a lot of noise for iso 640
Any comment? Is it normal for A9?
DPR doesn't have a test scene shot at ISO 640, but here is a comparison at 800 so you can see what raw noise looks like compared to a couple of other 24MP-ish full frame cameras, and your XT-3.

https://www.dpreview.com/reviews/im...=1&x=0.7720462083952876&y=-0.5376344086021507
Thanks I see. And even more confused because A9 is in the best class on DXmark. A9 (or upcoming A9II) is on my wish list. In my country I cannot rent it. In the past I have experience in wildlife with 300/f2.8 & 600/f4 and other FF cameras in the class of A9. The noise in OP photos are for sure not good and I'm disappointed.
It looks the best to me out of the four I selected in this comparison (A9, XT-3, 6DII, and A7I). Do you see it differently?
 
thats a lot of noise for iso 640
A couple of these are huge crops AND, for feathers and fur, I reduce Luminescence NR and raise Fine Contrast. I don't process the way most people expect to see.
 
The snowy egret landing was a good 1 to 2 stops underexposed. The others were pretty close, so I might have added 1/4-stop of EV on the others.
 
thats a lot of noise for iso 640
You can't compare noise from images developed through unspecified processing. Some of them could be massively cropped, pushed 3 stops, massively sharpened or something else for all you know.
 
thats a lot of noise for iso 640
You can't compare noise from images developed through unspecified processing. Some of them could be massively cropped, pushed 3 stops, massively sharpened or something else for all you know.
you can see the effect of changing the parameters in any picture.

- cross-referencing noise vs iso plus a raw sample most of the times gives you an idea of the cropping and pushing applied.

- over-sharpening is obvious if you look closely.
 
Small crop, no EV compensation a7RIII:

22f84af3ed0a4789b3b690bdc203ba37.jpg

--
Dave
 
Last edited:
Question: I just got the 600mm f/4 - I think the same day you did. I'm as happy as you are regarding the image quality. I had two build issues with mine, and I'm not sure it's just my copy. I wonder if you could report if yours has the same characteristics?

1) The knob that tightens the rotating tripod foot appears to distend the ring when tightened enough to stop the ring's movement. It opens up a space where it appears dirt, water, etc. can get in. If I tighten it just up to the point where the ring deforms, it won't be tight enough to keep the foot in place.

2) The silver name badge on the top of the lens is over-long, so when it's screwed into the body of the lens, it appears to be under compression, and the middle rises up, again presenting a place where dirt can collect.

Thanks for the early review. -tig
 
Question: I just got the 600mm f/4 - I think the same day you did. I'm as happy as you are regarding the image quality. I had two build issues with mine, and I'm not sure it's just my copy. I wonder if you could report if yours has the same characteristics?

1) The knob that tightens the rotating tripod foot appears to distend the ring when tightened enough to stop the ring's movement. It opens up a space where it appears dirt, water, etc. can get in. If I tighten it just up to the point where the ring deforms, it won't be tight enough to keep the foot in place.

2) The silver name badge on the top of the lens is over-long, so when it's screwed into the body of the lens, it appears to be under compression, and the middle rises up, again presenting a place where dirt can collect.

Thanks for the early review. -tig
My copy has the first condition, but not the second.
 

Keyboard shortcuts

Back
Top