Pentax Optio S4i Point & Shoot Camera
The Pentax Optio S4i is a 4MP 1/2.5 inch compact camera — known for its 4MP 1/2.5-Inch Sensor and Aluminum Alloy Body. Check GearFocus for current availability, with buyer protection on every purchase.
Pentax Optio S4i Point & Shoot Camera
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Camera Overview — Pentax Optio S4i
Key Features — Pentax Optio S4i
4MP 1/2.5-Inch Sensor: Captures images at up to 2304x1728 pixels, suitable for everyday snapshots and standard-sized prints.
Aluminum Alloy Body: Slim 84 x 52 x 20.5 mm construction weighing just 120g makes this camera genuinely shirt-pocket portable.
Optical Viewfinder: Provides an alternative to the LCD for framing shots, useful in bright outdoor conditions.
7-Point Contrast AF: Contrast detection autofocus across 7 points gives reasonable subject acquisition for a compact camera of this era.
ISO 50–400 Range: Covers both bright daylight and indoor shooting without needing additional lighting in most casual situations.
Built-In Flash: Supports Auto, On, Off, and Red-eye reduction modes for flexible shooting indoors or in low light.
Camera Specifications — Pentax Optio S4i
| Spec | Detail |
|---|---|
| Use Cases | Travel |
| Type | Point and Shoot |
| Sensor | 1/2.5 inch |
| Resolution | 4MP |
| Processor | Unknown |
| ISO Range | 50 – 400 |
| AF System | Contrast Detection |
| AF Points | 7 points |
| Max Photo Resolution | 2304x1728 |
| Burst Rate | 2 fps |
| Bit Depth | 8-bit |
| Image Stabilization | None |
Description — Pentax Optio S4i
The Pentax Optio S4i is a point-and-shoot compact camera built for portability, housed in an aluminum alloy body that measures just 84 x 52 x 20.5 mm and weighs 120g. Its 4MP sensor — a 1/2.5-inch type — delivers a maximum resolution of 2304x1728 pixels, suitable for everyday photography and casual use. Autofocus is handled by a contrast detection system with 7 focus points, and the ISO range runs from 50 to 400.
The built-in flash covers Auto, On, Off, and Red-eye reduction modes for flexible indoor and outdoor shooting. Framing is available through either the optical viewfinder or the 1.8-inch TFT LCD display at 85,000 dots. Nine color profiles — including Normal, Black & White, Sepia, Red, Pink, Purple, Blue, Green, and Yellow — add creative flexibility in-camera.
Burst mode supports up to 2 frames per second. Storage options include SD cards and internal storage, while connectivity is provided via USB. The camera is powered by a D-LI8 rechargeable lithium-ion battery rated at approximately 180 shots per charge (CIPA standard).
Pros — Pentax Optio S4i
- ✓Extremely compact aluminum alloy body at 84 x 52 x 20.5 mm and just 120g
- ✓7-point contrast detection autofocus system for a point-and-shoot camera
- ✓Wide ISO range of 50–400 for varied lighting conditions
Cons — Pentax Optio S4i
- ✗No image stabilization of any kind — neither optical nor digital
- ✗Small 1.8-inch LCD at only 85,000 dots limits framing and image review quality
- ✗No Wi-Fi or Bluetooth connectivity for wireless image transfer
Videos — Pentax Optio S4i
Retro digicam test | Pentax Optio S – Tiny gem from 2003 — Erik Söderlund