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Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4

  
 
hayraddin
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p.1 #1 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


Hi guys,

After I came back from Costa Rica, and going through a lot of my photos Im a bit unhappy with the amount of super high ISO photos I ended up becuase of the f8 at 600mm of my xf150-600.

I really love the lens but Im starting to think I need something else so I can do better low light, as Im also starting to do more and more very early morning walks to see more wildlife.

Im considering if I should pay the 4000$ CAD for the xf500 , or spend a lil bit more and get a nikon 800 f6.3, either with a Z8 or with a fringer adapter for now.

As I understand Z8 with the 800 f6.3 would give me, compared to the xf150-600 one more stop of light and 2 stops of DoF??

The xf 500 would give me one more stop of light and 1 stop of DoF.

The gain of the Z8 + 800 f6.3 doesn't seem that big for the extra weight and new body.

The other option I'm considering is getting a second hand Canon EF 600mm F4 II, for something like 6000$ CAD, and adapting it into my fuji, which would give me even more light than the Z8 with the 800 f6.3 or the xf500mm for only 2000$ more.

However, on the topic of autofocus, obviously the 150-600 at f8 struggled a bit to focus in the dark jungles in Costa Rica, I had to sometimes end up manually focusing for stationary subjects.

I know the Z8 would give me better tracking, etc from what people say online, but has anyone experienced using one of the big F4 600mm lenses with the Fringer adapter? Will it be worse at tracking and autofocus speed than using the native xf500mm?

I don't know, Ive got all this ideas in my head and I'd like some opinions.

Thanks a lot and have a nice day!



Sep 04, 2025 at 04:35 PM
RoamingScott
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p.1 #2 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


The problem is, when you get an 800, you're shooting at 800 forever. I'd rather have a zoom and lose a bit of light to gain the flexibility.

This is where a lens like the 600/4 TC shines the brightest, but I know it's unobtainable for most (me included).



Sep 04, 2025 at 04:45 PM
hayraddin
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p.1 #3 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


I'd be willing to stretch to 6000$ for a 600mm F4 (the xf500 will cost me 4500$ with taxes, so its not a huge difference), if I knew for sure that it will be better at focusing and tracking than the xf 500 f5.6. But I think its not a very common thing, to splurge on a FF lens like this to use it on aps-c, and I don't know how well it will work, if its not gonna focus fast enough i think its better to have the lighter xf500 f5.6 even if its one stop darker.

I like the idea of 600mm F4 in aps-c though, vs 500mm f5.6, more reach and more light, although for sure its 2.5x heavier, but im willing to carry the wight if I can get more light in the morning and evenings which is when animals are out.

I would be gaining 1 more stop of light, probably sharper since aps-c will only use the center section of the glass, and 600mm in aps-c is enough reach for me.

The 800 f6.3 seems like less light to have the same reach, and for the same money since I would have to also buy the Z8 body , although that would give me a better wildlife body I guess... so idk



Sep 04, 2025 at 05:03 PM
brianbeatty
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p.1 #4 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


The other thing to keep in mind, the EF 600mm is HUGE. I'd much rather go the XF 500mm and deal with the f/5.6. It'll be smaller than your current setup:

https://camerasize.com/compact/#891.867.11,891.1171,891.1057,ha,t



Sep 04, 2025 at 05:13 PM
CKrueger
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p.1 #5 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


I’ve used a 500PF for years, and it’s a great lightweight telephoto with enough reach for almost any subject. It takes a 1.4x TC very nicely, too, if you need more reach. I use mine with a Z9, and use DX mode for a bit of extra “zoom”.

I shot it briefly against an XF 150-600 and preferred the Nikon for its IQ and smaller size.

If you’re considering Nikon, you can pick up 500PFs for cheap these days, and they don’t really give up anything to the newer Z lenses, except the irritation of using a mount adapter. You can also adapt F lenses to Fuji, so you could have a super tele, TC, and perhaps a Z6III (or used Z8) for less than a 600/4 or 800/6.3, and then shoot it on both Nikon and Fuji.



Sep 04, 2025 at 06:38 PM
Steve Spencer
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p.1 #6 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


A good way to keep track of both low light performance and DOF is by keeping track of the size of the entrance pupil of the lens. The size of the entrance pupil is just the real focal length divided by the f/number and as it is the size of the hole that let's in light it determines both depth of field and how much light is let in. So at 600mm f/8 your current zoom has an entrance pupil of 75mm. The xf 500 f/5.6 has an entrance pupil of 89mm which would definitely help in low light and would get you a lighter lens. The Nikon 800 f/6.3 has an even larger exit pupil of 127mm, so would help even more with the tradeoff of a bigger rig and considerably more expense. And a 600 f/4 has an even larger entrance pupil of 150mm, but results in a very large setup and costs a lot of money.

So you need to think about how big of a setup you are willing to take on your walks. How much reach you need (i.e., how close you can typically get to your target)? What level of AF performance do you want? How much are you willing to spend? Are you willing to spend more and carry more in the future, so you want to build your kit over time?

I think the xf 500 f/5.6 is a great option for Fuji shooter. It provides a lot of capability in a nice small package for a very reasonable price. AF performance is getting better on Fuji too and will improve over time. If you think that is all you would want in the foreseeable future, then I would recommend just getting that lens.

If, however, you want even more capability now or want that possibility in the future, then I think starting to build a Nikon kit makes a lot of sense.

For about $1,600 used you can get a Nikon 180-600 f/5.6-6.3 (with a 95mm entrance pupil, so lots of capability) add a Z8 to that and it would not be much more than the xf 500 and then you have the possibility of building the capability of the system. You could do something similar with Sony as well.

There really are a number of good options:

1) stick with Fuji X mount and add the xf 500 f/5.6
2) add a Nikon or Sony camera and an 180-600 f/5.6-6.3 type lens
3) add a Nikon camera and the 500 f/5.6 PF
4) add a Sony camera and the 400-800 f/8 lens
5) add a Nikon camera and the 600 f/6.3 PF or 800 f/6.3 PF
6) add a Nikon or Sony camera and adapt a Canon 600 f/4 if the AF will suit your needs




Sep 04, 2025 at 08:03 PM
Steve Spencer
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p.1 #7 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


This thread has made me think about what I would like to see Fuji develop for the X mount that would get me to change to it for wildlife shooting.

What I would love to see is a 200-500 f/4.5-5 zoom, which is pretty similar in capability to the Sony 400-800 f/6.3-8. That would have a nice wide 100mm entrance pupil, but I think could be built and not weigh more than 1,800g and not be any longer than the 500 f/5.6. That lens for under $5,000 with that size and weight would be exactly what I want.

In general I think that with the X-H2s, Fuji has an opportunity to begin to develop wildlife lenses for the X mount. In addition to the 150-600 5.6-8 and the 500 f/5.6. I think these four lenses could really be compelling options:

Zooms:
200-500 f/4.5-5
150-400 f/4-4.5

Primes:
300 f/2.8
400 f/4.5

That would give them three nice supertelephoto zooms: 150-600 f/5.6-8; 200-500 f/4.5-5; and 150-400 f/4-4.5 and four nice supertelephoto primes: 200 f/2; 300 f/2.8; 400 f/4.5; and 500 f/5.6. If they wanted to compete with the 600 f/4 and 800 f/6.3 on FF, then they could always make a 400 f/2.8 and 500 f/4 as well. They would be big, but they could be super capable.



Sep 05, 2025 at 03:28 PM
hayraddin
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p.1 #8 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


Thanks veryone for all the feedback!

It helps me wrap my head around the options!

Im currently leaning to trying to rent a fuji xf500mm f5.6 to compare it against my 150-600 f8, to see how big of an improvement it would be , and if its worth 4000$.

After that, I might also rent a Nikon Z8 and 800 f6.3, to see if the weight is something I can hike around with and live with it, if it isn't I might just stay with Fuji, as all my other gear is already there for landscape and macro photography.

A system full change would definitely be expensive, but the way I see it, it has to be "worth it" and not just a 10% improvement.

Nikon sounds like a big improvement for the price, I could get myself in a Z8 with a 180-600 for the same price as the fuji xf500mm, and leave the door open for that 800 f6.3 upgrade in the future. Im gonna try all this out renting I think, and see what I like the best.

Lots to think about still, but I appreciate everyone's ideas =)



Sep 06, 2025 at 12:37 PM
OwlsEyes
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p.1 #9 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


I'm a long time Nikon shooter with a lot of gear. I've been to Costa Rica 10 times w/ over 4 months of combined photo time there. The low light and canopy is a real problem when it comes to making images there. Furthermore, the need to often shoot up translates into a lot of backlighting with white patches... Your desire to lower the ISO makes a lot of sent, but if you are using an FX sensor or medium format sensor, you should be able to shoot at ISO 6400 without an issue. Combining this ISO with a high quality NR should alleviate your issues.

Regarding your lens choice, Scott makes the key point about a fixed 800mm lens. I have owned the 800PF, and while great for what it does, it is a "one-trick pony." 800mm is great when you need it, and too much focal length when you don't. Furthermore, if you are shooting through a lot of moisture or varied temperature gradients, your images will become very soft due to the atmospheric conditions. After a year of shooting it, I sold my 800PF and 400 f4.5 and replaced it with the 400mm f2.8TC. The lens I have is brilliant for places like Costa Rica, but is cost prohibitive. I also have the 180-600 and like the lens, but it is not nearly as sharp and fast to use at the 400TC....

So my suggestion, as a Nikon shooter, is to consider the Nikon 600mm f6.3 PF. The lens is about 2/3 faster than your current lens, and on an FX sensor will give you a shallower depth of field and more ISO latitude. Furthermore, you can program the Z8 to toggle between DX (1.5x crop) and FX with a touch of a button... This will give you the flexibility to quickly compose at 600m or the 900mm field of view. I shoot in DX with my gear and ISO 6400 is just fine.

Final points... if you have the GFX 100 ii and you you are buying the 500mm f5.6, I think you will end up with a brilliant combination for optical and high ISO performance. However, you mush consider if you are willing to give up AF responsiveness...

cheers,
bruce



Sep 08, 2025 at 11:02 AM
kalani_kane
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p.1 #10 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


OwlsEyes wrote:
I'm a long time Nikon shooter with a lot of gear. I've been to Costa Rica 10 times w/ over 4 months of combined photo time there. The low light and canopy is a real problem when it comes to making images there. Furthermore, the need to often shoot up translates into a lot of backlighting with white patches... Your desire to lower the ISO makes a lot of sent, but if you are using an FX sensor or medium format sensor, you should be able to shoot at ISO 6400 without an issue. Combining this ISO with a high
...Show more

I faced a similar decision owning the Fuji x-h2s with 150-600 (with or without the 1.4x TC) and a new interest in wildlife hybrid shooting in poor light for half the year in Anchorage, Alaska. I found myself only using the x-h2s for video as images in anything other than ideal lighting, to me, were uninspiring and I hesitated to add the xf 500mm (or faster xf 200mm f/2). I rented a Nikon z9 and z 600pf S (no TC) and found the body to be far too heavy, literally heavier than my GFX 100, while the z600pf was light and images a delight. However, I also greatly prefer the GFX 100sii and GF500mm and GF250mm (with or without the 1.4x TC) for large wildlife. So Bruce (OwlEyes) graciously helped me decide on the flexibility of the zoom z 180-600mm paired with my z8. The added flexibility was the right choice for me, even though together they are quite heavy bricks, especially in predictably poor light, and I now carry both systems on dedicated wildlife outings.

Note the z8 is pretty limited by 20fps RAW and, a bit shockingly for a wildlife setup, lacks pre-capture RAW with only a .jpg option. They have the spectacular TC lenses for wildlife, and I'm sure the next z9/z8 ii's will finally remedy this, but compared to the x-h2s 40fps and pre-capture RAW flexibility for birds-taking-flight especially, I had to change my shooting style back to old-school predict and shoot, filling a ton of cards in the process. The Sony a1ii solves this but perhaps lacks the lenses and cost flexibility, if that's a concern. For everything outside of specific bird photography/videography, I prefer the output of the GFX and would instantly add a GF supertele zoom if that becomes an option (and hope for a stacked sensor with pre-capture RAW, better AF, and leaf shutter to mitigate high fps shutter shock, of course!). Hope this helps.



Sep 08, 2025 at 12:44 PM
 


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Erich6_
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p.1 #11 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


Raw pre-capture, high frame rates, and big buffers is why I went with the OM-1 Mark II with the 150-400mm f/4.5. The tradeoff is the noise factor and having to get the composition essentially perfect in capture (little flexibility for cropping.)

If I were to double-down on my Nikon Z8, I’d be torn between 180-600mm or the 600mm PF. Even the 400mm f/4.5 with TC and DX, though borderline reach, is appealing.



Sep 08, 2025 at 09:39 PM
OwlsEyes
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p.1 #12 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


kalani_kane wrote:
I faced a similar decision owning the Fuji x-h2s with 150-600 (with or without the 1.4x TC) and a new interest in wildlife hybrid shooting in poor light for half the year in Anchorage, Alaska. I found myself only using the x-h2s for video as images in anything other than ideal lighting, to me, were uninspiring and I hesitated to add the xf 500mm (or faster xf 200mm f/2). I rented a Nikon z9 and z 600pf S (no TC) and found the body to be far too heavy, literally heavier than my GFX 100, while the z600pf was light
...Show more

---------------------------------------------

Erich6_ wrote:
Raw pre-capture, high frame rates, and big buffers is why I went with the OM-1 Mark II with the 150-400mm f/4.5. The tradeoff is the noise factor and having to get the composition essentially perfect in capture (little flexibility for cropping.)

If I were to double-down on my Nikon Z8, I’d be torn between 180-600mm or the 600mm PF. Even the 400mm f/4.5 with TC and DX, though borderline reach, is appealing.


While I'm a Nikon shooter, I'm still going to make a case for the GFX 500 lens if your goal is to lean into the "artistic" side of wildlife/nature subjects. There is no doubt that pre-capture is a useful tool, but this is best applied to action where the peak moment of movement is unpredictable. While I appreciate this type of work, it is not what I personally seek.

I've used/owned all of the lenses discussed here and can tell you that they all are capable optics. I think the 600PF and 400 f4.5 are equally sharp. I actually prefer a 400mm focal length because it is faster and takes converters well. The 600PF is amazingly sharp, but you begin at 600mm and give up 2/3 of a stop. The 180-600 is super flexible, but needs post processing to make the images close to what the primes can produce... with that said, I have 180-600 and the 400TC because I value the capabilities that are only available to a zoom lens.

So what's the point,... the 500mm GFX lens is basically a 400mm FOV on a GFX 100 ii camera, a DX crop gets you close to 600mm, and a 1.4x gets you more. If you're an action photographer, Nikon/Sony/Canon are the way to go... but if you are more into images like the one I'm posting here... then stay within your Fuji GFX system... I'm trying to figure out how to make that move for my own work...

cheers,
bruce




  NIKON Z 8    NIKKOR Z 400mm f/4.5 VR S Z TC-1.4x lens    560mm    f/8.0    1/2000s    2200 ISO    -0.7 EV  




Sep 09, 2025 at 11:20 AM
kenbennett
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p.1 #13 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


As I use both systems, and the two lenses appear to be identical except for the mount, I do wish that the Fuji 500mm lens came in one version, with included adapters to fit both XF and GFX cameras. Alas.

Anyway, the 500mm Fuji XF lens is outstanding, and shorter than the 150-600. Weighs less, too. I tried both then purchased the 500.

The Canon 600 f/4 is almost 7 pounds (3050g), versus the Fuji 500mm at just under 3 (1330g.) It's a monster. If you're willing to carry that, then the new Sigma 300-600 f/4 mirrorless lens might be more versatile, and the additional cost of a Sony A9iii to go with it wouldn't add much more I handled one of those at a conference, and it's quite something. Would have been super useful back when I was shooting sports every day.



Sep 09, 2025 at 01:42 PM
Erich6_
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p.1 #14 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4



OwlsEyes wrote:
So what's the point,... the 500mm GFX lens is basically a 400mm FOV on a GFX 100 ii camera, a DX crop gets you close to 600mm, and a 1.4x gets you more. If you're an action photographer, Nikon/Sony/Canon are the way to go... but if you are more into images like the one I'm posting here... then stay within your Fuji GFX system... I'm trying to figure out how to make that move for my own work...

cheers,
bruce



Good point on GFX crop. You can get about 2.3X magnification factor cropping the 100MP down to a 20MP MFT format. That would yield just over 900mm effective focal length (35mm format) with the GFX 500mm lens with not a shabby effective f/# (around f/9?).



Sep 09, 2025 at 10:16 PM
hayraddin
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p.1 #15 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


Well, I have a Fuji xt5 , so im not on the gfx mount but XF mount, I should have been more clear on that maybe.




Sep 10, 2025 at 10:27 AM
OwlsEyes
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p.1 #16 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


hayraddin wrote:
Well, I have a Fuji xt5 , so im not on the gfx mount but XF mount, I should have been more clear on that maybe.



I think I misread your original post, so that's on me. I'm also a bit obsessed with the potential of the GFX 100 ii at the moment, and have been thinking hard about going in that direction in the future. As a result, I probably transferred my own thoughts about this potential to your question.

There is no question that you will see lots of benefits by shifting to a Nikon/Canon/Sony FX body when compared to the Fuji outfit you are currently using. The larger sensor will offer you a shallower depth of field that you can leverage into "isolating" your subject. In addition, the Nikon equivalent lens (180-600) is two stops faster than your Fuji lens. I use my 180-600 exclusively on water craft and am often happy with what I get... though, the 400 f4.5 is better for this... just not as flexible.

For all of my other wildlife photography, I rely on a the 400mm f2.8TC. This is the one lens that I'm not sure I can give up, and is the primary reason I have not moved to the Fuji GFX camera line.

bruce



Sep 10, 2025 at 10:43 AM
Cliff L.
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p.1 #17 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


OwlsEyes wrote:
In addition, the Nikon equivalent lens (180-600) is two stops faster than your Fuji lens.


The Nikon lens is only 2/3 of a stop faster, not two stops.



Sep 11, 2025 at 09:50 AM
Cliff L.
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p.1 #18 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


hayraddin wrote:
Hi guys,

After I came back from Costa Rica, and going through a lot of my photos Im a bit unhappy with the amount of super high ISO photos I ended up becuase of the f8 at 600mm of my xf150-600.

I really love the lens but Im starting to think I need something else so I can do better low light, as Im also starting to do more and more very early morning walks to see more wildlife.

Im considering if I should pay the 4000$ CAD for the xf500 , or spend a lil bit more and get a nikon 800
...Show more

There is no adapter to allow you to use a Nikon Z-mount lens on a Fuji camera, so you would have to buy a Nikon body if you want to use the Nikon 800mm f6.3


As I understand Z8 with the 800 f6.3 would give me, compared to the xf150-600 one more stop of light and 2 stops of DoF??

The Nikon 800mm f6.3 would give you 2/3 of a stop more light. DOF is not measured in stops, but at long distances the DOF of an 800mm f6.3 lens would be a bit shallower than a 600mm f8 lens; however, the zoom lens can focus much closer than the 800mm prime lens, so for small, easily approachable subjects, the 150-600 lens will actually have better DOF characteristics.







Sep 11, 2025 at 10:02 AM
hayraddin
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p.1 #19 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


I think Im finally leaning for either a Canon EF 500mm f4 II , the 600 F4 III or the fuji xf 500 f5.6.

To use as a second lens for more light, and keep the fuji 150-600 for more flexibility when needed (subjects too close, video, etc)

I wish I could rental this lenses and try them out but I can't find anywhere in MOntreal or Canada to try them out =(



Sep 11, 2025 at 10:11 AM
Cliff L.
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p.1 #20 · Fuji xf 500mm f5.6 or Nikon 800 f6.3 or EF 600mm F4


hayraddin wrote:
I think Im finally leaning for either a Canon EF 500mm f4 II , the 600 F4 III or the fuji xf 500 f5.6.

To use as a second lens for more light, and keep the fuji 150-600 for more flexibility when needed (subjects too close, video, etc)

I wish I could rental this lenses and try them out but I can't find anywhere in MOntreal or Canada to try them out =(



The primary benefit of the XF 500mm f5.6 is that it focuses much closer than any of the other telephoto primes you're considering. so depending on the subjects you shoot, that could be a big advantage. Another advantage is that it will have much better image stabilization than any of the adapted lenses on a Fuji body.

This place in Canmore, Alberta rents gear, but the don't have any Fuji gear by the looks of it: https://www.canadacamerarentals.ca/

Vistek also rents gear, as do some other Canadian retailers... or do what everyone else seems to do - buy the gear from Amazon and return it once you're tried it for a few weeks.

By the way, I either currently own, or have recently owned, all of the gear you've mentioned. My recommendation would be if you're happy with the image quality and handling of your Fuji cameras, get the XF 500mm f5.6 - it's a very good lens.



Sep 11, 2025 at 11:16 AM
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