The general consensus across parenting forums and product reviewers breaks down like this:

Ages 2–4: Look for cameras specifically designed for toddlers. These are ultra-simple — often featuring large rubberized grips, no sharp edges, big chunky buttons, and limited functions (basically: shutter button, a few simple filters or frames). Resolutions are typically 2–5 MP, which is perfectly fine for this age group. The goal at this stage is hand-eye coordination and cause-and-effect learning, not image quality.

Ages 5–8: This is the sweet spot for dedicated kids cameras. Models in this range — like the H2, H7, T2, and T5S series — offer 12–48 MP sensors, basic zoom, smile detection, built-in photo frames, and simple video recording. The interface is still icon-based with large buttons, but the feature set expands enough that kids stay engaged as their skills grow. At this age, print capability and video recording become fun additions.

Ages 9+: By this age, many children are ready for a simplified compact camera or a "bridge" device that sits between a toy camera and a real camera. Look for models with optical zoom, better low-light performance, and more manual control. Some kids at this age can handle a basic entry-level compact camera if supervised.

The key rule of thumb: If the child can hold the camera steady and understand "press this to take a picture," they are old enough for a basic model. The right camera grows with that ability.