Nikon Newbie looking for advice - OM-1 + 150-400 Pro zoom - system swap to Z9 or A1

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I am in roughly the same boat as the OP and am considering buying an A1/200-600 or a OM-1/300 4.0 or 150-400 TC1.25 f4.5.

Here are my thoughts.

The entire reason for such a setup (for me) is bird photography, especially BIF.

For everything else I shoot, my Leica and my DSLRs are great.

So for a person in my position, just buying ONE of the cheaper and lighter setups and treating the package as a one-off “BIF telephoto” makes a lot of financial & poundage sense (i.e. not buying more fully into the system, using it as an addition and not switching systems).

If you want shallow dof, the choice is clear; open your wallet and load your arms/back.

If there are other factors in play, the list below might help.

REACH, WEIGHT, PRICE
800mm reach equivalents
OM-1 + 300 f4 + 1.4x = 4.9 lbs | $5550
= 840 f5.6

Following are compared to above, from lightest to heaviest
OM-1 + 150-400mm TC1.25 = 5.4 lbs | $9700
= 800 f4.5 / TC1000mm f5.6, +0.5lbs, +$4150

A1 + 200-600 f5.6-6.3 + 1.4x = 6.6 lbs | $8950
= 840 f9, +1.7lbs, +$3400

Z9 + 800 f6.3 = 8.1 lbs | $12,000
= 800 f6.3, +3.2lbs, +$6450

A1 + 600 f4 + 1.4x = 8.6 lbs | $20,050
= 840 f5.6, +3.7lbs, +$14,550

Z9 + 600 f4 TC1.4 = 10.1 lbs | $21,000
= 840 f5.6, +5.2lbs, +$15450
The Sony A1 with 200-600 zoom is probably the best capability to versatility BIF combo but I'm not attracted to variable aperture lenses.
The Nikon Z9 is more of a handful to use both in weight and complexity but I do like those Nikon lenses.
Unless you shoot tiny birds or long distance I'd also consider the Z9 with 400mm f4.5 or 400mm f2.8 TC ... 🦘
 
Here’s an updated list from my prev post in this thread that now includes the Z8, R5, and R3. Please let me know if I messed it up. I used camera weights that include card + batteries.

REACH, WEIGHT, PRICE
800mm reach equivalents
OM-1 + 300 f4 + 1.4x = 4.9 lbs | $5550
= 840 f5.6

Following are compared to above, from lightest to heaviest with 800mm as the minimum focal length

Z8 + 400 f4.5 + TC2.0 = 5.3 lbs | $7600
= 800 f9, +0.4lbs, +$2050

OM-1 + 150-400mm TC1.25 = 5.4 lbs | $9700
= 800 f4.5 / TC1000mm f5.6, +0.5lbs, +$4150

A1 + 200-600 f5.6-6.3 + 1.4x = 6.6 lbs | $8950
= 840 f9, +1.7lbs, +$3400

Z8 + 800 f6.3 = 7.2 lbs | $10,500
= 800 f6.3, +2.3lbs, +$4950

R5 + 100-500mm f4.5-7.1 + TC2.0 = 7.6 lbs | $6700
= 1000 f14, +2.7lbs, +$1150

Z9 + 800 f6.3 = 8.1 lbs | $12,000
= 800 f6.3, +3.2lbs, +$6450

R3 + 100-500mm f4.5-7.1 + TC2.0 = 8.2 lbs | $8800
= 1000 f14, +3.3lbs, +$3250

A1 + 600 f4 + 1.4x = 8.6 lbs | $20,050
= 840 f5.6, +3.7lbs, +$14,550

R5 + 600 f4 + TC1.4 = 8.9 lbs | $16,900
= 840 f5.6, +4.0lbs, +$11,350

Z8 + 600 f4 TC1.4 = 9.2 lbs | $19,500
= 840 f5.6, +4.3lbs, +$13,950

R3 + 600 f4 + TC1.4 = 9.5 lbs | $19,000
= 840 f5.6, +4.6lbs, +$13,450

Z9 + 600 f4 TC1.4 = 10.1 lbs | $21,000
= 840 f5.6, +5.2lbs, +$15,450

Edit: attached a little chart I found somewhere (can’t remember) that helps me visually compare f-stops. I get confused with stuff like “How many stops are between f6.3 and f9?”

F7898389-9D37-40D8-99FF-7EA4A330800B.jpeg
 
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Thanks so much all. I'm overwhelmed by your detailed responses. Lens selection seems key to me, which I will look at more closely. The info on the internet seems very sketchy after reading the above advice. Always good to ask the right people (?with nothing to gain)
I'm leaning towards the Z9 with the 500 f5.6 PF as a starting point with the addition of a 1.4 converter. Are there any OM-1 shooters in the forum that may have advice?
Keep sending your thoughts, it's helping me to focus

Thanks all
I shoot with Om-1 and 300 pro f/4 in conjunction with Z9 500 pf , 800pf , and nikkor z 100-400

A little bit of hx: i was primarily a microfour thirds shooter; got the d500/ d850 and 500pf for wildlife BIF photography. Ever since,
I stayed with nikon mainly due to the pf lenses which has given me some fantastic lightweight options with excellent without sacrificing quality to a large degree.

I was still shooting MFT em1 m2 for everything else. I didnt make the jump to any other mirrorless system for the promise of improved AF cause i love the pf lenses; ultimately moved to Z9.

I then got the OM-1 because the 300 pro is a fantastic lens and the CAF on OM-1 is leaps and bounds better than em-1 . I was still waiting for 150 -400 which you have, a killer combo especially when paired with OM-1.

I use OM-1 with my Z9 and i do need a third body for 3 camera/ lens combo on the field all interchangeable for different focal lenths/ stills and video without futzing with lens changes etc.

I lost faith that i will at some point get olympus 150-400 f/4.5 and have pre ordered Z8 as my third body/ lens combo.

My 2c is that- go with the system that offers you a killer lens selection and stick to it. you already have a top class combo.

The only thing I worry about is the viability of OM systems and i pray that i am being unnecessarily paranoid in this regard.

Whatever you choose, marry the optics. Cameras will come and go.

Best,
Jay
 
I shoot with Om-1 and 300 pro f/4 in conjunction with Z9 500 pf , 800pf , and nikkor z 100-400
. . .

I lost faith that i will at some point get olympus 150-400 f/4.5 and have pre ordered Z8 as my third body/ lens combo.

Best,
Jay
Interesting comment on the 150-400mm. Could you clarify how long ago you ordered? Many of the photos people post are using this lens and, if I had decided to switch, would be my "dream" lens.
 
It would be interesting to see/hear a comparison of f-stop equivalents for micro 4/3 versus full frame sensors? And effect on noise/low light photography?
I’m not wading into the the noise/low light arena (Steve made a video about it, I’ve forgotten the points), but as far as f-stops: I could be wrong, but when people talk about that subject they usually neglect to mention they are talking about depth of field and not the amount of light that your meter reads.

As far as I understand, if a scene meters f4.5 in FF, the same framing of the scene in m43 will also meter f4.5 but will have greater apparent DOF.
 
It would be interesting to see/hear a comparison of f-stop equivalents for micro 4/3 versus full frame sensors? And effect on noise/low light photography?
Basically M43 is 2x over FF. The FOV of lenses are 2x their marked focal length compared to the FOV on FF for the same marked focal length. So 300/4 lens is FOV of 600mm lens on FF.
But the DOF/aperture has to also be 2x. So that 300/4 lens on M43 looks like a 600 f/8 lens on FF...not a 600/4. As far as DOF goes.
It is true that the exposure will still follow the aperture on the lens. So the 300/4 at f/4 will give you the same ISO and SS as you'd get with the 600/4 on FF.
BUT, the M43 is gathering less light onto the actual sensor (because the sensor is small) so ISO performance is 2 stops worse, give or take.
 
Save yourself a load of cash, buy an Olympus 100-400mm, get it now and get images that are almost indistinguishable from those taken by the 150-400mm. You won't have a built in TC but otherwise there's not a hell of a lot of difference.
I did consider the 100-400; but i have the 300 prime on om-1 and with a 100-400 or 500pf on nikon z9; I am now very happy with telephoto choices i have. i mentioned that because i worry about the viability OMD . But I think they will be fine given the supply chain issues etc 🤞🏽🤞🏽
 
Here’s an updated list from my prev post in this thread that now includes the Z8, R5, and R3. Please let me know if I messed it up. I used camera weights that include card + batteries.

REACH, WEIGHT, PRICE
800mm reach equivalents
OM-1 + 300 f4 + 1.4x = 4.9 lbs | $5550
= 840 f5.6

Following are compared to above, from lightest to heaviest with 800mm as the minimum length lens
OM-1 + 150-400mm TC1.25 = 5.4 lbs | $9700
= 800 f4.5 / TC1000mm f5.6, +0.5lbs, +$4150

A1 + 200-600 f5.6-6.3 + 1.4x = 6.6 lbs | $8950
= 840 f9, +1.7lbs, +$3400

Z8 + 800 f6.3 = 7.2 lbs | $10,500
= 800 f6.3, +2.3lbs, +$4950

R5 + 100-500mm f4.5-7.1 + TC2.0 = 7.6 lbs | $6700
= 1000 f14.2, +2.7lbs, +$1150

Z9 + 800 f6.3 = 8.1 lbs | $12,000
= 800 f6.3, +3.2lbs, +$6450

R3 + 100-500mm f4.5-7.1 + TC2.0 = 8.2 lbs | $8800
= 1000 f14.2, +3.3lbs, +$3250

A1 + 600 f4 + 1.4x = 8.6 lbs | $20,050
= 840 f5.6, +3.7lbs, +$14,550

R5 + 600 f4 + TC1.4 = 8.9 lbs | $16,900
= 840 f5.6, +4.0lbs, +$11,350

Z8 + 600 f4 TC1.4 = 9.2 lbs | $19,500
= 840 f5.6, +4.3lbs, +$13,950

R3 + 600 f4 + TC1.4 = 9.5 lbs | $19,000
= 840 f5.6, +4.6lbs, +$13,450

Z9 + 600 f4 TC1.4 = 10.1 lbs | $21,000
= 840 f5.6, +5.2lbs, +$15,450

Edit: attached a little chart I found somewhere (can’t remember) that helps me visually compare f-stops. I get confused with stuff like “How many stops are between f6.3 and f9?”

View attachment 60886
Considering some of the options here have quite poor apertures for shooting wildlife and others are quite expensive, have you considered adding a Z8 + 400mm F/4.5 S + 2x TC to the list? It seems most are of the opinion that using the lens with the 1.4x TC and cropping provides similar results as the 2x, but it seems like a reasonable way to get to 800mm in Nikon the lightest possible way. I think it might even be reasonable to consider Canon‘s 800mm F/11 with the R5 for a cheap alternative over the 100-500mm with 2x TC.
 
BUT, the M43 is gathering less light onto the actual sensor (because the sensor is small) so ISO performance is 2 stops worse, give or take.
Would love to see a comparison of the OM-1 and 300mm f/4 shot in low light (ISO 12,000 or above) versus a full frame camera (Sony A1 for example) plus the 600mm f/4 without any noise correction software applied. Is there a review with such examples?
 
Would love to see a comparison of the OM-1 and 300mm f/4 shot in low light (ISO 12,000 or above) versus a full frame camera (Sony A1 for example) plus the 600mm f/4 without any noise correction software applied. Is there a review with such examples?

I did some back-to-back but only at ~ISO3200 here: https://bcgforums.com/index.php?thr...-birds-and-wildlife.13925/page-13#post-229339

Edit: for some reason the link brings you up a few posts from mine.. if it does just look for the snowy owl photos on that page.

Generaly you are going to have ~2 stop worse ISO performance between the two, so if you shoot FF now shoot 2 stops higher ISO and that will give you a sense for what you’ll get.
 
I did some back-to-back but only at ~ISO3200 here: https://bcgforums.com/index.php?thr...-birds-and-wildlife.13925/page-13#post-229339

Edit: for some reason the link brings you up a few posts from mine.. if it does just look for the snowy owl photos on that page.

Generaly you are going to have ~2 stop worse ISO performance between the two, so if you shoot FF now shoot 2 stops higher ISO and that will give you a sense for what you’ll get.
Thanks I did see those comparisons (even commented on your post). Unfortunately our owls don't become active till later so was looking for some lower light comparisons (ie. higher ISO).
 
Would love to see a comparison of the OM-1 and 300mm f/4 shot in low light (ISO 12,000 or above) versus a full frame camera (Sony A1 for example) plus the 600mm f/4 without any noise correction software applied. Is there a review with such examples?
You could get some idea by using the DPR test scene comparison tool. Load in your cameras of choice at ISO of choice and see how the shadows and noise compare. But as Palmor mentions, if you currently shoot FF and currently use say 6400ISO then set the FF to 25,600 and that would give you some idea of what the M43 would look like at 6400ISO. Of course if you are shooting static subjects at dusk you may be able to lower the ISO on the M43 due to better image stabilization for a given shutter speed. That may help level the playing field if the subject is relatively static and you are handholding.

 
Thanks I did see those comparisons (even commented on your post). Unfortunately our owls don't become active till later so was looking for some lower light comparisons (ie. higher ISO).
So I was basically deciding between the A1 and the OM-1 because for health reasons I need a very light kit (at least for some time). Here are some links that helped me decide.

Everybody’s biased in some way or another, but here you get to see some anti-Fro-knows-photos sort of dudes and their thoughts.




My head was spinning around with the whole noise thing and Mike Lane put my mind at ease about that, for my purposes anyway (first vid). De-noising software, I hear, also helps quite a bit. Not saying it will eliminate the noise differential! Keep in mind I am no expert and have barely shot an OM-1, so all of my info comes from these two gents, above.

What really is the deciding factor, in my view, is DOF. That can be a biggie, sometimes, but also can be mitigated in many cases. I think it’s the top issue I had to decide on.

If I made my living shooting sports, then FF is would be with a 400mm 2.8. But I’m shooting perched birds and BIF for kicks, so I’ll see how it goes.

Btw Mike Lane’s acronym FRPS stands for Fellow of the Royal Photographic Society. That was a head scratcher.
 
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I forgot to mention that I was concerned at the many blurry and crummy OM-1 pics that I saw scattered over the web from various posters. But then I’d see some stunning pics from the same camera. I chalk it up to processing skill, mainly. Perhaps I’m wrong and they are futzes with the camera as well.

I’m sure for ultimate quality, FF at 45+mp is the way to go. Certainly for large prints or for lots of cropping. But FF stuff is heavier annd more expensive. Everything is a trade off.

Anyway, hope some of this helps.
 
My take on it, and yes, I was at a crossroads between OM1+150-400 and A1+600GM some 5 months ago, is that the Olympus combo excells at closer to short medium distance, and the A1+600GM excells at short medium to longer distance.
The Olympus lens has phenomenal clarity, but due to the 2x crop factor, is f9 wide open at 400mm (800mm), and f11 at 500mm (1000mmm) when speaking in full frame terms. The A1+600GM+1.4TC is f5.6 at 840mm, that is a big difference.

From what I have seen in the wide variety of images posted from the Olympus combo, is that the clarity helps for songbirds at smaller distances, but does not really contribute to getting attractive images at larger distances, as it tends to enhance the business of surroundings and backgrounds, which is already fairly prominent due to the high minimal f-stop at 500mm (with 1.4TC engaged). This is all relative to the Sony combo (that I now own), which does much better in this regard, but of course is in a completely different size, weight and cost league.

I chose the Sony combo because of the very high allround usability, I shoot a lot of wading birds at medium to longer distance during migration. I intend to add the Olympus combo at some point in future for travel though, since that 150-400mm lens has a very beautiful and particular look for subjects not too far off, and especially for songbirds fairly close, and it is built to a very high standard. And the OM-1 is a steal compared to the A1.
 
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