The Wildlife Photographer’s Dilemma: OM System or Nikon for Scotland?

I’ve made some important decisions over the last couple of weeks — forced mainly by circumstances — but they’ve led me to a clear truth: I need to follow my instinct and my dreams. One of those decisions is that I’m now actively working towards a move back to Scotland. And with that, I’ve been giving serious thought to what I actually want to do with my photography, my time, and this website.

For years I’ve dreamt of being a wildlife and nature photographer — but life has always managed to get in the way. Now I’m planning to make time to actually do it. Not in the hope of becoming a professional, but simply to improve, to get images that satisfy me, and — in large part — as a reason to spend time alone in beautiful places. Camping, walking, the sounds, the weather… all the things my soul hasn’t had enough of since I lived in the Outer Hebrides.

But before I go any further, it’s worth saying this: none of this means the site is changing direction. I’ll still be writing about the cameras, lenses, stories and real-world photography that have built this website over the last year. Wildlife will simply become another thread running alongside everything else — a new chapter, not a replacement. If anything, it feels like a natural extension of the same themes: being outdoors, paying attention, and using photography as a way of making sense of where I am in life. I’ll still be doing everything I do now — just in a new place, with new subjects added into the mix

I’ve always loved the outdoors, animals, and quiet places. It’s where I feel most at peace, and after a turbulent decade in the Philippines, I’m at a point in life where peace — and being where I truly feel at home — matters far more than money, material things, or “success.”

This year I’ve worked on this website religiously, partly to build something sustainable for my family, but also to give myself a little bit of choice: What do I photograph? Where do I live? What’s the environment I want my girls to grow up in? The answer keeps coming back the same — Scotland. A life shaped by the outdoors, with a respect for nature and the environment.

And as I’ve been planning this return, I’ve found myself in a dilemma — a first-world one, admittedly, but a real one for a photographer. I want to pursue wildlife photography alongside landscapes and the stories I tell here. But as the owner of both an OM System OM-1 Mark II and a Nikon Z8… which direction do I take?

Forums don’t help. They’re so polarised that all nuance gets lost and everyone argues as if their choice is an absolute. So instead, I’m writing this to think out loud and get my thoughts down on digital paper — partly for myself, partly because some of you are probably wrestling with the same decisions.

As a travel photographer, my entire kit — across every system — has always been built on primes. The 35mm, 50mm and 85mm lenses are my go-to tools, the way I see and interpret the world. But wildlife is a different discipline entirely, and I now need to think seriously about which system and which lenses make the most sense to invest in.

Some will immediately say “full frame, of course”, but there are a lot of factors to consider, from cost and weight to depth of field, reach, and the realities of Scottish weather. So in this article I’m going to outline my full thought process — the pros, the cons, and the tradeoffs I’m weighing up as I decide which path to take.

Lens Choices: The Real Foundation of Any Wildlife System

A new camera body is exciting for most of us, but when you’re making decisions about which system to build your future around, the camera actually matters far less than the lens ecosystem behind it. Bodies come and go. Lenses are the long-term investment. Lenses define what you can shoot, how far you can reach, and how enjoyable the whole experience is.

With that in mind, I’ve narrowed my choices down to OM System and Nikon.

Why these two?
Because both brands offer lenses that:

1. I can afford right now if I consolidate some of my other kit,
2. give me the reach and flexibility to shoot everything from Red Deer to Red Kites, and
3. also offer “halo lenses” — the dream lenses I may never own unless I win the lottery, but which show where their systems can take me long-term.

For OM System, lenses like the M.Zuiko 40–150mm f/2.8 PRO and the 300mm f/4 IS PRO hit a sweet spot. They deliver the image quality I want, they aren’t impossibly heavy, and — importantly — they’re attainable. If I sell off some gear I’m not using, these lenses aren’t out of reach. And together, they cover a huge range of Scottish wildlife situations.

On the Nikon side, lenses like the 180–600mm, 100–400mm, and the 400mm f/4.5 stand out. None of them are “budget” by any means, but compared to the truly exotic supertelephoto primes that dominate professional wildlife photography, they’re surprisingly reasonable. They offer serious performance without stepping into five-figure territory. I’ve also been narrowing down the best accessories for the Nikon Z8 to make it nearly perfect.

That’s ultimately what this comes down to: which system gives me the lenses I need today, while still leaving a path open to the lenses I might dream about tomorrow?

Weather Sealing and the Reality of Scottish Weather

If I were going to shoot wildlife somewhere else, this might not matter quite as much. But Scotland is famous for throwing all four seasons at you in a single day. In winter the rain can come in sideways and last for hours, only to clear up without warning and reveal that magical post-storm light that makes the Highlands feel almost otherworldly.

When you’re out in that kind of environment — walking, camping, shooting, sometimes miles from shelter — you need a system you can trust. Not just theoretically water-resistant, not just “weather-sealed” according to marketing, but a system you genuinely believe will survive whatever the Highlands can throw at it.

In my years of shooting, OM System and Nikon stand out above the rest for their build quality and weather sealing. I’ve used both in the Outer Hebrides with wind and rain blasting straight in from the Atlantic. I’ve shot them in monsoon conditions in Asia, wiped them off with my sleeve, slung the camera over my shoulder with no protection at all — and they’ve never missed a beat.

But it’s not just the weather sealing that matters.

I remember sitting by a loch on the Isle of Harris. I’d just stepped out of the car — the wipers frozen to the windscreen, the screenwash jets frozen solid — and walked down to photograph a line of pine trees covered in heavy powdered snow. It was –11°C. To operate my Canon 5D Mark II, I had to remove my gloves. Within thirty seconds my fingers were stinging so sharply it almost felt electric. I got the shot, but it taught me something I’ve never forgotten: in real winter conditions, ergonomics are not a luxury. They’re essential.

Having buttons you can find instinctively, controls that work reliably in the cold, and a body design you can use with gloves on — that’s what matters when Scotland decides to test you.

The Depth of Field Problem (And Why Sensor Size Isn’t a Straightforward Win)

One thing I know from my years living in Scotland is that it can be incredibly beautiful — but light levels throughout the year, and especially in winter, are low. When you’re shooting landscapes that doesn’t matter too much. You can drop the shutter speed, let the camera sit on a tripod, and the problem disappears.

Wildlife isn’t that forgiving.
Shutter speed has to stay high to freeze motion, so you end up pushing ISO whether you like it or not. On paper that’s an easy win for full frame: better high-ISO performance, cleaner files, more tonal depth. End of debate, right?

Except it’s not that simple.

At the focal lengths typically used for wildlife — 300mm, 400mm, 600mm — depth of field becomes razor thin. At 600mm f/4 on full frame, your plane of focus can be literally an inch deep depending on distance. If you want more of the animal in focus — the eyes, the feathers, the edges of the body — you have to stop down. And the moment you stop down, you’re raising ISO to compensate.

Suddenly the full-frame “better in low light” advantage starts to erode.

Micro Four Thirds, with its smaller sensor, naturally gives you roughly double the depth of field for the same angle of view. A 300mm f/4 on OM System behaves like a 600mm f/8 on full frame in depth of field, but it’s still an f/4 lens in terms of exposure. That means I can often shoot the OM 300mm f/4 at f/4 and keep my ISO two stops lower than a full-frame 600mm f/4 that I’ve had to stop to f/8 to get enough usable depth.

That’s a huge chunk of full-frame’s low light advantage gone.

And then there’s the financial and physical reality: to actually access the full-frame advantage, you need equally fast glass. That means 600mm f/4 on Nikon. If anyone has a spare £15,000 — and maybe a gym membership to go with it — I’m all ears. It’s simply not realistic for me right now.

The lenses I can plausibly afford for Nikon are the 180–600mm (f/6.3 at the long end) and the 400mm f/4.5. Both are fantastic and I’d be delighted to own them, but in terms of pure light-gathering:

• 600mm f/6.3 vs 300mm f/4 on OM System
• 400mm f/4.5 vs the new OM 50–200mm f/2.8 Pro (at 200mm)

It’s not quite the landslide you see claimed online.

If all of this sounds like I’m leaning toward OM System — or trying to justify it — I promise I’m not. I genuinely like both systems. I’m simply trying to figure out whether one of them is obviously more suitable for me given where I’m moving, what I want to photograph, and how I tend to work in the field.

Because there is a flip-side.

Full-frame files, especially from the Z8, have a depth and tonality that M4/3 just can’t match. The resolution gives me more crop room when the subject is further away, and when all else is equal the Nikon will simply produce better quality, more flexible images.

If you can fill the frame on full frame, the advantage is real — especially in Scottish light.

And then OM System throws one more curveball: IBIS.

I’ve seen photographs made with the OM-1 + 300mm f/4 at shutter speeds so absurdly low they feel like witchcraft. Dual Sync IS sometimes looks like it’s breaking the rules of physics. Being able to hand-hold at speeds that wouldn’t even register as possible a decade ago softens the low-light disadvantage in ways that aren’t always obvious on paper.

Which leaves me, even after writing all of this out, exactly where I started: torn.

Cost, Size & the Reality of Carrying It All

One thing I have to face — and I suspect many photographers do too — is the simple reality of cost and weight. Not in abstract terms, but in the very real sense of walking ten miles through boggy ground in February, or climbing out of Glen Feshie with a full winter pack while sleet blasts sideways across your face.

It’s romantic to imagine yourself out there photographing deer on a distant ridge.
It’s less romantic to realise you’re carrying eight kilos of glass and metal to get that shot. I’m planning on trekking and camping regulalry, I wont be running up mountains like I used to but weight still plays a roll when you add in the other gear you need to pack in order to survive nights out in the Scottish winter.

This is where the conversation normally shifts.

Because when you strip away the forum rhetoric, the truth is painfully simple: full-frame wildlife lenses are heavy, expensive, and physically demanding, and Micro Four Thirds lenses are… not.

Or at least that used to be the case, except Nikon changed the rules.

Nikon have done what no other brand has yet done by creating their range of PF (Phase Fresnel) lenses. With their ingenious design they’ve muddied the waters of weight and confused me even further.

Lenses like the Nikon Z 400mm f/4.5 (not a PF lens but still small), 600mm f/6.3 and 800mm f/6.3 are much smaller and lighter than full-frame primes of those focal lengths used to be. It makes them genuinely competitive with Micro Four Thirds in some cases. There is only a 200g difference between the OM System 300mm f/4 Pro (1270g / 4.12lbs) and the Nikon Z 600mm f/6.3 (1470g / 5.25lbs).

That’s astonishing when you consider one is full frame and one isn’t.

But then we bring cost into the equation — not as a question of “what can I technically buy if I stretch far enough?”, but “what can I justify as an experienced photographer but a relative beginner in wildlife photography.

If I buy an OM 40–150mm f/2.8 Pro and a 300mm f/4, that’s expensive, but it’s doable.
If I buy a Nikon 180–600mm and a 400mm f/4.5, that’s more expensive, but still within reach.

But if I start thinking about lenses like the 600mm f/4, the 400mm f/2.8, or even the 800mm f/6.3 PF… suddenly I’m entering a different financial universe. Those are extraordinary tools, but they’re also beyond what my wildlife photography can justify when I’m just starting out.

Then there’s the question of future upgrades.

For OM System, my potential paths are:

• The 50–200mm f/2.8 Pro, though it’s more than double the cost of the 40–150mm f/2.8 for an extra 100mm
• Or the 150–400mm f/4.5 Pro (£6,695), a lens I’ve used briefly and found incredible — essentially the optical quality of the 300mm f/4 Pro with far more flexibility

For Nikon, the natural next steps would be:

• The 600mm f/6.3 PF (£3,999)
• Or the 800mm f/6.3 PF (£4,999)

Neither system’s upgrade path is inexpensive, but both offer lenses that would suit the Highlands extremely well.

The real question is which of these lenses — and which system — I can actually see myself carrying, using and enjoying day after day in Scottish weather and Scottish terrain. The OM System upgrade path leads to one of the best zoom lenses ever made. The Nikon Z path leads to two of the best-value and most compact super-telephoto primes ever made, especially when compared to the old f/4 and f/2.8 wildlife giants of previous generations.

Why I May End Up Running Both Systems (At Least for a While)

The honest answer — and probably the most sensible one — is that I simply don’t yet know where the limits of each system will appear for the kind of wildlife photography I want to do in Scotland. I have a good understanding from owning both, but when it comes to wildlife specifically, I’m not there yet. You only learn those limits through real time in the field, in real Scottish conditions, with real subjects.

Both systems have strengths.
Both have weaknesses.
And importantly, both are genuinely excellent for wildlife, nature, and the kind of adventure-focused photography I plan to do. Both also work extremely well for landscapes, which will always remain part of how I photograph the world.

When I tested the Canon R5 and 100–500mm L against the original OM-1 a few years ago, the thing that surprised me most was just how close the image quality was when I used the R5 in crop mode to try and match the OM-1’s reach. It taught me something I haven’t forgotten: sensor size isn’t everything, and sometimes different systems converge more than you expect once you actually use them in similar ways.

So maybe the simple answer is this: I may end up using both, just as I do with my travel photography. Pick the system that suits the subject, the conditions, the walk, or simply the mood I’m in that day. Let the landscape decide. Let the light decide. Let the distance to the subject decide. That feels more likely than forcing myself into one box or the other.

And in the meantime, I’ll keep my fingers crossed for that Lotto win.
Then I really won’t have to choose. In the meantime, I’m going to keep working, keep planning, and keep looking forward to next year — and to being back in that fresh Highland air.