Free · Built by Gopi Talari, working Dublin photographer
Most guides tell you what aperture is. Here you move the dials and watch the photograph react — the background melts, movement freezes or smears, grain creeps in. Understand your camera. See what changes. Take better photographs.
The learning path
Work through it in order, or jump to whatever you want to understand today. Every lesson below is interactive — there is something on this page to move, drag or try.
Aperture, shutter and ISO — and how changing one forces a change in another.
Open the studio → 02Why f/2 melts a background and f/11 keeps everything sharp — and what it costs you.
Try the aperture slider → 03Freeze a running child at 1/1000s, or turn a waterfall to silk at 1/4s.
Try the shutter slider → 04How to rescue a dark scene, and what grain actually looks like when you zoom in.
Try the ISO slider → 05Drag the divider and compare the same scene at two settings, side by side.
Drag the comparisons → 06Thirds, leading lines, symmetry, framing and horizons — drag a subject and feel it.
Open the composition tool → 07Move the sun around a face and watch front, side and back light change everything.
Move the light → 08Scrub through the day and see why photographers plan around two short windows.
Scrub the day → 0924mm to 135mm: how field of view and compression change the whole photograph.
Change the lens → 10Five real scenarios — choose your settings and find out why they work.
Try the scenarios → 11Sun, overcast, rain and mist — what each one gives you, and the settings to match.
Change the weather → 12Six shooting assignments to take outside. Tick them off as you go.
See the projects →Flagship lesson · Interactive
Three dials decide every photograph. Move them and watch the scene react: the background blurs, the moving subject smears or freezes, grain appears, and the meter tells you whether you still have a usable exposure. Turn on Keep exposure to see how the three trade against each other.
Try a look
Depth of field: Moderate.
Motion: Slight.
Noise: None.
Notice that the five presets are all correctly exposed, yet look completely different — because each is set for a different amount of light. That is the whole idea: once the brightness is right, the settings are yours to choose for the look you want. The written companion lesson is The exposure triangle explained.
Flagship · Interactive simulator
Choose a subject and the light you are working in, then take the camera into your own hands. Move every dial and watch a live simulation react: the background softens, a running child freezes or smears, grain creeps in, the colours warm or cool. A rule-based Photography Coach reads your settings and tells you what to try next. It is not a real photograph, it is an educational simulation of what your camera would do.
Want the full camera cockpit — physical dials, four teaching scenes and an AI critique of every shot? Try LensLab, our advanced camera simulator.
Subject
Light & environment
Your camera
Scenario 1 of 6
Set the dials on the left, then take the shot.
Everything here is generated in your browser to teach the relationships between the controls. Real light is richer and less forgiving, which is exactly why practising with a real camera matters. When you want that, our photography learning sessions pick up where this leaves off.
Interactive · Compare
The fastest way to understand a setting is to see the same scene twice. Drag each divider left and right — on a phone, swipe across the image.
Aperture. At f/2.8 the background dissolves and the subject lifts off it. At f/11 the background is sharp and competes for attention.
Shutter speed. 1/1000s freezes the movement outright. 1/30s smears it — sometimes a mistake, sometimes exactly the point.
ISO. ISO 100 is clean and holds fine detail. ISO 6400 gets the shot in poor light, but grain eats the subtle tones.
Interactive · Composition
Exposure is only half a photograph. Composition is how you arrange it. Pick a technique, then drag the subject around the frame and read the feedback.
Split the frame into thirds. Placing a subject on a line — or where two cross — feels more natural than dead centre. Drag the subject and watch the feedback.
Drag the subject around the frame.
Interactive · Light
Direction matters far more than power. Drag the sun across the frame (or use the slider) and watch the shadows — and the whole mood — change.
Front light is even but flat. Side light gives a face shape and depth — it is what most portrait photographers reach for. Backlight glows through hair, but you must expose for the face or you get a silhouette.
Drag the sun across the frame.
Interactive · Time of day
Scrub through a day and watch the light change colour, height and direction. Golden hour and blue hour are short — which is exactly why they are worth planning for.
The sun's height decides everything: how warm the light is, how long the shadows are, and whether faces are flattered or squinting.
Interactive · Lenses
A longer lens does not just get you closer — it compresses the background and changes the shape of a face. Tap a focal length and watch the frame and background react.
The gold frame shows roughly how much of the scene each lens sees. Watch the background scale up as you go longer — that is compression, and it is why 85mm and 135mm flatter portraits.
50mm
Interactive · Ireland
"Bad" weather is usually good light. Tap through the four conditions you will actually meet in Dublin, and see what each one is best for.
Ireland gives you soft light more often than harsh light — that is a gift for portraits, not a problem to wait out.
Starting point
f/2.8 · 1/250s · ISO 400
Interactive · Practice
Five real situations. Pick your aperture, shutter and ISO, then find out why a working photographer would choose what they choose. It is not an exam — the explanation is the point.
Get outside
Reading about photography only takes you so far. Each project is a short, concrete assignment — tick them off as you finish them; your progress is saved in this browser.
f/2.8 → f/5.6 → f/11, aperture priority1/1000 → 1/250 → 1/30, shutter priorityISO 100 → 800 → 3200, same scenef/2.8 · 1/250 · ISO 200 as a starting pointf/2.8 · 1/500 · ISO 80035mm or 50mmWhere to practise
Locations we actually work in, with what each one is good for and a sensible starting point. Settings are suggestions — read the light on the day.
Landscape · Coastal portraits · Long exposure
24–35mm for the cliffs, 85mm to compress the headland.f/8 · 1/250 · ISO 100 — or f/11 · 1–4s on a tripod for silky water.Family portraits · Autumn colour · Wildlife
50–85mm for portraits; longer if you are photographing the deer.f/2.8 · 1/250 · ISO 400 under the tree canopy.Sunset · Reflections · Long exposure
24–35mm for the sweep of the pier.f/8 · 1/125 · ISO 100; blue hour needs a tripod and several seconds.Street · Architecture · Night & rain
35mm — close enough to be in it, wide enough to keep context.f/5.6 · 1/250 · ISO 200; night f/2 · 1/125 · ISO 1600.Panorama · Couples · Elevated views
24mm for the panorama, 85mm to pick out the bay.f/8 · 1/250 · ISO 100.Minimalism · Families · Big skies
35–50mm; go longer to compress the dunes.f/5.6 · 1/500 · ISO 100 — bright sand fools meters, so check the histogram.Drone rules are law, not photography advice, and they change. In Ireland the Irish Aviation Authority (IAA) requires drone operators to register, and pilot competency/training requirements apply. UAS Geographic Zones restrict or prohibit flying in certain areas — much of central Dublin and airspace near Dublin Airport is affected — and separate operational authorisation is needed for some flights.
We deliberately do not list altitude limits or distances here, because those details must come from the current official source rather than a photography page. Check the IAA before every flight, and confirm the specific zone you intend to fly in: iaa.ie — drones.
Everything else on this page is photography suggestion. Only the drone requirements above are legal obligations — treat them that way.
Learn with your own camera
Everything above teaches the relationships. A real session puts them into your hands. These are practical, personalised learning sessions built around your camera and the things you actually want to understand. They are learning sessions, not a photoshoot, so the whole time is spent on you and your photography.
A practical, personalised session using your own camera. Bring your questions, and we will work through the areas you actually want to understand or improve.
Possible areas include camera settings, exposure, composition, lenses, portraits, natural light, flash, street photography, editing, or any specific photography problem you want to solve.
A practical, interactive photography session for a small group. Everyone should bring their own camera and arrive ready with their questions and the areas they want to practise.
We will schedule the session together and choose a suitable photography location. The session can be arranged around the group's interests and level.
The important distinction. These are learning sessions, not photography services. The time is for practical knowledge transfer and hands-on learning, so you leave understanding your own camera better, rather than with a gallery of edited photographs. If you would like us to photograph an occasion for you, that is our photography and video services instead.
Free download
Everything on this page, written down in one readable place — from picking up a camera to photographs you are genuinely happy with. Read it online, or save it as a PDF to keep.
Use these tools as much as you like — and when the moment really matters, let us photograph it properly. Families, newborns, weddings and celebrations across Dublin and Ireland.