Lens & Settings Recommender

What it does

Runs your answers through a rules-based decision tree (not an AI model) built from standard photography guidelines — scene type sets the suggested lens, lighting sets a base ISO range, your desired look sets the aperture, and subject motion plus the handheld reciprocal rule (shutter speed roughly 1/focal-length to avoid shake) set the minimum shutter speed.

What you'll need

• Scene type, lighting condition, how much the subject is moving, the look you want, and whether you're handheld or on a tripod — no photo needed.

Steps

1. Answer the four questions and the handheld checkbox.
2. Tap "Get recommendation."
3. Read the suggested lens, aperture, shutter and ISO, plus the notes explaining why.

Reading the result

Treat the aperture/shutter/ISO as a starting exposure triangle, not a fixed rule — adjust from there based on your camera's actual light meter. The lens suggestion is a focal-length range, since the same shot works with different specific lenses depending on what you own.

Tips

• If your camera's meter says the suggested settings are under- or over-exposed for your actual scene, trust the meter — lighting varies a lot even within one "condition" here.
• On a tripod, you can push the shutter slower and drop ISO further than shown, as long as the subject itself holds still for the exposure.

How does this tool pick a lens and settings?

This isn't an AI model — it's a rules-based decision tree built from standard photography guidelines. Scene type sets the suggested lens/focal-length range, lighting condition sets a base ISO range, your desired look sets the aperture, and subject motion combined with the handheld reciprocal rule (shutter speed roughly 1/focal-length, to avoid camera-shake blur) sets the minimum shutter speed — whichever of the two is the stricter requirement wins.

Why photographers use it

Heading into an unfamiliar scene type, or just want a sanity-checked baseline instead of guessing the exposure triangle from scratch? That's what this gives you before you even raise the camera. It also doubles as a way to build intuition for how scene, light, subject motion and desired look each pull settings in a different direction, since the notes explain the reasoning behind every suggestion rather than just handing you numbers.

Which number should I trust if my meter disagrees?

Always trust your camera's actual light meter over this tool's suggestion. The four questions describe a category of scene — "bright direct sun" spans a real range of actual brightness — not your literal specific lighting at the exact moment you're shooting. Treat the aperture/shutter/ISO here as a sensible starting exposure triangle to adjust from, and the lens suggestion as a focal-length range rather than one specific lens you're required to own.

Common mistakes

• Treating the lens suggestion as one specific lens to buy. it's a focal-length range. The same shot works with different lenses in your kit depending on what you own — the notes explain the underlying reasoning so you can substitute intelligently.
• Ignoring your camera's meter when it disagrees. lighting varies a lot even within one broad condition category like "overcast." Always defer to your actual meter reading over this rules-based baseline.
• Applying the handheld shutter floor on a tripod and losing creative options. on a tripod, subject motion — not handheld shake — is the real constraint on shutter speed. You can often go slower and drop ISO further than the handheld-reciprocal-rule result shown.
• Picking a desired look that doesn't match your actual creative goal. the desired-look question drives the aperture suggestion directly, so answering "everything sharp" for a shot you actually want subject isolation in will steer the whole recommendation off course.
• Expecting the tool to know your subject's exact speed. "fast" subject motion covers everything from a jogger to a race car. For genuinely extreme action, you may need an even faster shutter speed than the baseline this tool suggests.

Example settings

FAQ

Is this powered by AI?

No — it's a fixed rules-based decision tree with no model call and no network request, so results are instant.

Why does the suggested shutter speed look fast for a "static" subject?

The handheld reciprocal rule (roughly 1/focal-length) can be stricter than the motion floor for longer lenses. A still subject shot handheld on a 400mm lens still needs a fast shutter to avoid camera shake, regardless of how still the subject itself is.

Why didn't the shutter speed change when I unchecked "handheld"?

When the subject-motion floor is already stricter than the handheld reciprocal rule, switching to a tripod doesn't lower the displayed minimum — but the notes will tell you when you actually have room to go slower and drop ISO, which the raw shutter number alone doesn't show.

Can I use this for video instead of stills?

Not directly — it's built around still-photography exposure and lens conventions, like the handheld reciprocal rule, which don't map cleanly onto video shutter-angle conventions.

What if my scene doesn't match any of the nine listed types?

Pick the closest match and treat the result as a rough starting point. The notes explain the reasoning behind each suggestion, so you can adjust intelligently for a scene that's a blend of categories.