The HP5 Plus 100 ASA Experiment: A Happy Accident?


Hello lovely people.

I’m a bloody fool. I made the stupidest of mistakes when shooting HP5 Plus 400 speed film at ISO 100.

I’d been intending to use 100 ASA film in my Nikon FE, so in preparation, I had set my camera’s ISO dial to 100. I loaded the HP5 and forgot to change this blasted setting. By the time I realised, I had already taken “some” photos. I didn’t want to wind the film on to change the setting because the sun was shining and I didn’t want to waste the light.

In for a penny, in for a pound. I thought, “What the heck?” They say you have all this “latitude” with film, so I went online to find out if I could salvage the roll. Here we go for a walk in the Parc Garenne Lemot in Clisson.

I developed the film in Ilfosil 3 (1:9) and used the development times for Kentmere 100, praying that I would have something usable…

ParameterDetails
FilmIlford HP5 Plus 400
ExposureRated at ISO 100 (2 stops overexposed)
DeveloperIlfosol 3 at 1:9
Development Time5 minutes 30 seconds (using Kentmere 100 time)
ResultLower contrast, smooth tonal transitions, fine-looking grain, excellent shadow detail
CameraNikon FE
LocationParc de la Garenne Lemot, Clisson

THE STATUE – Front view of classical statue on pedestalThis shot demonstrates the beautiful tonal range achieved through pull processing

The Theory: Pulling Two Stops

For those who aren’t deep in the film weeds, here is what I actually did. By setting my camera to 100 ISO while using 400 speed film, I was overexposing by two stops.

Now, common wisdom says that pulling HP5 to 200 ASA (one stop) is perfectly fine. But I thought I was pushing my luck pulling it two stops to 100 ASA. I thought I was taking the mickey with the film gods.

By giving it extra light and less development (pull processing), I was essentially asking the film to reduce contrast and grain significantly. I was testing just how much abuse it could take before the negatives turned into flat, grey mush.

I didn’t develop it for standard HP5 400 times. I treated the whole roll as if it were 100 ISO film from start to finish.

The Results

When I scanned the negatives, I was genuinely surprised. The negatives were dense, but not unmanageable. The scanner handled them well. Here is what the process actually looked like in practice.

1. Rich Shadow Detail

The first thing you notice is the lack of “muddy” shadows. Usually, HP5 can get a bit grainy in the dark areas. Here, the shadows under the pergola and the fence are deep, but they still hold detail.

FENCE WITH LONG SHADOWS – Diagonal shadows cast across gravel pathNotice how the deep shadows still retain texture and detail in the gravel

2. Texture and Grain

This is the real winner for me. Look at the texture on the wood in these shots. Because I gave the film extra light and reduced the development, the grain structure is much finer than usual. It looks almost like a slower film (like Delta 100) in the mid-tones.

WEATHERED WOODEN POST – Close-up showing wood grain and textureThe fine grain structure is clearly visible in the wood texture

3. Highlight Control

I was worried the bright spring sun would blow out the sky. Looking at these branches against the sky, you can see a beautiful grey gradient rather than a blown-out white. The reduced development time really helped keep those highlights in check, even with the two-stop overexposure.

BARE TREE BRANCHES AGAINST SKY – Intricate branch pattern with grey skyThis is the proof – the sky retains beautiful tonal gradation despite overexposure

4. Tonal Range

From the white marble of the statues to the dark foliage, the tonal separation is superb. The process gave me a creamy, classical look that I might not have achieved at box speed.

ORNATE URN WITH STATUE IN BACKGROUND – Layered compositionForeground and background detail with smooth tonal transitions
CLASSICAL COLONNADE – Stone pillars with cloudy skyWeathered stone texture and cloud detail demonstrate the technique’s versatility

The Verdict

So, was this a disaster? Absolutely not.

In fact, I was pleasantly surprised. Because I gave the film so much light and reduced the development, the shadow detail is incredibly rich and the highlights are held back. There is virtually no grain in the dark areas. The contrast is lower than standard HP5, which gives it a very smooth, almost medium-format look.

Ornate scrollwork detailRazor-sharp detail and micro-contrast prove no sharpness was lost

It turns out, what I thought was a stupid mistake is actually a technique some photographers use on purpose! Pull processing HP5 (rating it at 100 or 200 ISO and developing accordingly) is known to produce finer grain and lower contrast. I thought I was pushing my luck going two stops, but the film handled it like a champion.

Would I Do It Again?

Would I deliberately shoot HP5 400 at 100 ASA again? No, probably not. If I want 100 ASA film, I’ll just use 100 ASA film. It’s cheaper and more straightforward.

But it’s damned good to know that at a push (sorry, pull), it could work. If you’re ever in a situation where you’ve loaded the wrong film, or you’re caught out by changing light conditions, HP5 Plus can take the abuse.

Have you ever accidentally shot film at the wrong ISO? Did you save the roll or bin it? Let me know in the comments below.

Happy shooting

Ian from IJM Photography

Post Scriptum:

February 2026 — Clisson with the Nikon FE


Maybe I’m a little stubborn, just maybe, but I’m insisting on using my Nikon FE and for my health I have to get out. I had some Tri-X that needed using, and some HP5+ left over, so time to use it. And it does my mental health good too—getting out of the house despite the horrible light and rain.

“They” always say to go out in good light and use golden hour. We haven’t been blessed with good weather lately (understatement of the year contender 2026), and I always say just go out anyway and do it.

I shot two rolls that afternoon—72 frames total. Tri-X and HP5+, both at box speed. No pushing. I developed them in Fomadon LQN because it handles flat light cleanly: shadows stay defined, grain doesn’t get muddy even when the sky gives you nothing. When I scanned them, about half were ok enough to keep—36 frames that worked. Of those, maybe half a dozen were real keepers. That’s how it goes. Not every frame needs to be a masterpiece. Some just need to exist.

In Lightroom I only used the curves tool to pull a bit of separation between the wet stone and the grey sky. I wasn’t trying to manufacture contrast that wasn’t there. The rain had already done part of the work: cobblestones held texture because the light was even, puddles on the stairs created accidental reflections, and the streets were empty enough that I didn’t have to wait for tourists to clear the frame.

I won’t pretend I enjoyed standing in the damp. My shoes got wet. My hands were cold. But I needed to leave the house, and the camera gave me a reason to do it. The film was a deadline. The weather was irrelevant.

As you can see in the following photos, the light wasn’t fabulous, so we adapt. There are still interesting things to be seen.

Shot on Nikon FE with 50mm f/1.8. Kodak Tri-X 400 and Ilford HP5+ rated at box speed, developed in Fomadon LQN. Edited in Lightroom: curves adjusted for shadow separation only.

More Light Than We Imagine


Shooting Nantes at Night with HP5+

One September evening I walked between Place Bouffay and rue des Petits Écuries with the Nikon FE and a roll of HP5+. Box speed—400 ASA. No pushing. No stand development. Just me, tired eyes, and the hope the city would be kind.

It wasn’t always.

Some frames failed outright. Missed focus—my eyes couldn’t lock the split-image patch in the dim light. Others blurred from camera shake at 1/15th, handholding like a fool. I won’t pretend those shots have hidden merit. They’re gone. But the ones that landed? They held more than I expected.

Because Nantes at night isn’t dark. Restaurants pour light onto wet cobbles. Shop signs, streetlamps, even those little menu stands outside cafés—they all feed the scene. I’d guess the focus, press the shutter, and move on. Later, scanning the roll, I found detail in shadows I thought were lost. Not because I’d exposed well—I hadn’t—but because HP5+ gathered what was there even when I fumbled.

That’s latitude in practice. Not a spec sheet promise, but the difference between a usable negative and a blank one when your hands shake and your eyes fail. I didn’t push to 1600. I didn’t need to. I just needed a film that wouldn’t punish me for being human.

The December shots are more traditional street work—grey skies, low sun, the light you expect. Even the coffee cup photo owes something to Instagram. I won’t deny it. We absorb what we see online; it seeps into our framing without us noticing. No shame in that—it’s just how we learn now.

But the September shots that worked feel more like my own. Standing in Place Bouffay as evening deepened, watching light pool around tables and bounce off stone—I wasn’t chasing a look. I was just there, squinting, hoping. And HP5+ met that without fuss.

I’m not claiming mastery. I’m claiming a few good frames out of a roll that also held misses. That feels honest. Cities don’t go dark—they transform. And sometimes, even with bad eyesight and shaky hands, a simple roll of film gives you just enough to keep walking.


All photographs shot on Ilford HP5+ at 400 ASA, developed in standard chemistry. Nikon FE, Nantes—December 2025 and September 2025, Place Bouffay and rue des Petits Écuries.

Waiting for the Light: Reclaiming the Cathedral with Ilford HP5+


I didn’t set foot in the cathedral while Voyage en hiver draped its silence in municipal spectacle. Not out of protest—I simply couldn’t bear to see sacred space turned into a backdrop. So I waited. And when the banners finally came down in December, I loaded a roll of Ilford HP5 into my Nikon FE and walked back in—not as a tourist, not as a patient, but as someone hoping to find the light exactly where I’d left it.

I’ve always abhorred political recuperation. The Voyage en Hiver had no place in the cathedral’s reopening. This was about worship. About returning to God in a space that had been quiet for too long—not about municipal branding or winter tourism. “Give unto Caesar what belongs to Caesar, and unto God what belongs to God.”  (Matthew 22:21)

That day, I chose God’s silence over their spectacle.

My hands were cold when I raised the camera. December light in a stone cathedral is a quiet thing—more absence than presence. I wondered, honestly, if 400 ASA would be enough. But I wanted authenticity: more grain than digital noise, more truth than polish. So I trusted the FE’s metering, opened up my aperture, and let the film do what it does best. No second-guessing. No LCD screen.  Just the click of the shutter and the hope that the light would hold.

And it did.

The frames that emerged are darker than summer would allow—but this was December, after all. And in that darkness, something gentle remains: the grain cradling the texture of worn wooden pews, shadows tracing the ribs of vaulted stone, candlelight bleeding softly into halos where no banner now hangs. Black and white stripped away every distraction—the logos, the seasonal clutter, the noise—until only what mattered remained: light on stone, silence between pillars, the architecture of reverence.

One frame in particular stays with me: the candles. Shot at 1/30s, my hands unsteady not from illness but from the simple weight of the moment. The focus slipped slightly. The flames blurred into one another. And instead of frustration, I felt a quiet relief—the film hadn’t captured perfection. It had captured presence. Grain became breath. Blur became prayer.

I didn’t go to “get out of the house.” I went because the space was clean again—just stone, silence, and the stubborn glow of candlelight. And for a few minutes, with the FE cold against my palm and the smell of incense in the air, I remembered why I love film photography: it doesn’t lie. It holds what’s there—shadows and all—and asks only that you trust the process.

They sold a spectacle. I took back the light. And the grain—warm, imperfect, alive—proved which one will last.  My small act of reparation…

A New Chapter for IJM Photography


Hello, dear reader.

In a world that often feels unmoored, I’ve found grounding in the simple act of making and sharing photographs. I’m pleased to share that IJM Photography is now officially a registered micro-entreprise in France—a quiet but meaningful step forward.

Next month, I’ll be launching a small, carefully curated collection of print-on-demand photographs, drawn from images I’ve shared here over the years. To begin, I’m offering six 8×10 inch prints—some in rich colour, others in classic black and white—each printed on museum-grade archival paper and ready framed.

These are more than pictures. They’re fragments of light, memory, and place—moments I’ve carried with me, now offered to you.

I hope one of my images finds a home with you.

While the print collection launches next month, if you’d like to support IJM Photography today, donations of any amount are warmly welcomed.

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Nikon FE Review: Features and User Experience


Hello Dear Reader. I know you are an astute fellow, and that you never miss a trick. You will have noticed me talking about the Nikon FE. I will share something with you. I actually bought one at the end of last year from my HR director, but wanted to have the right time and places to start using it. One can’t rush this kind of thing.

Some of you might even say, “I thought you were a Fuji guy, or a Canon guy, or even a Pentax guy.” I hate to disappoint all those of you attached to a particular brand, but I am above all “a guy.” Mind you, this was my first venture into Nikon-world. Not a Nikon D something…. I went slightly more old school as I have been known to go before.

Why the FE and not the FE2, or even F3? The guy was selling an FE, that is why. Now that is out of the way, let’s have a look at this camera. First and foremost, it’s a really sexy camera reminiscent of those used in the 60’s by National Geographic photographers. It’s not, but that’s by the by. It actually came out in 1978. Secondly, this particular one was in full working order, always a plus; the price was fair for the camera’s excellent condition. I may be a collectionneur, but a camera is there to be used. Did I say it was a very sexy camera? I did. Oh good.

As I am wont to do, I took it out for a test drive to Nantes, and took it round Bouffay. And the pub… just enough to get a feel for the wee beastie. A roll of Ilford HP5 at box speed and I was ready to go. Verdict? So far so good. I must have done just 10 shots that day, and came back to it later, much later, to finish the roll. The feel in the hand was fine, and what I’m used to. The lens I have is a 50mm f/1.8, aka the nifty fifty. Usability? Aperture priority, which I enjoy. And the one thing that tickled me pink was being able to see the aperture ring through the viewfinder. Very useful…  It’s since journeyed to Lourdes, the mountains, even Northumberland—never once feeling like a limitation.

Does it have auto focus? No. It doesn’t. It has manual focus, which I find easier to use. I prefer to choose myself rather than have modern technology do everything for me. Yes, I use it on my DSLR, but I don’t use that the way I do when doing film photography. Here’s a surprise for you: I am not built for speed. I am built for comfort and won’t be hurried. This kind of SLR suits me to a T.

I know some of you little techies out there need specs about a camera, so for you lovely people, here you are:

Nikon FE – Quick Specs

  • Production: 1978–1983
  • Type: 35mm manual-focus SLR
  • Exposure: Aperture-priority AE + full manual
  • Metering: Centre-weighted TTL (match-needle in viewfinder)
  • Shutter: 1–1/1000s + B, electronically controlled (requires battery)
  • Viewfinder: Fixed eye-level pentaprism (~93% coverage) with aperture & shutter speed display
  • Lens mount: Nikon F (AI/AI-S compatible)
  • Battery: 2× SR44 (or 1× CR1/3N) – note: the camera can operate at 1/90s (M90 mode) without a battery
  • Weight: ~590 g (body only)
  • Fun fact: One of the smallest and lightest Nikon SLRs with full AE.

Is it ‘better’ than the Pentax ME Super? Not objectively—but it fits me. I prefer Nikon’s take-up spool, and that viewfinder aperture display? That’s the clincher. Pentax glass is glorious, no doubt. But this? This is my beastie.

I’m over the moon to have this addition to the working collection, and I have to go and finish the film that’s still inside it. So yes, I enjoyed using it; yes, it wasn’t foreign enough to scare me. Do I have any regrets? Absolutely not! It works just the way I need it to, and when it comes to cameras, isn’t that all we need?