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Pentax Optio A40 Point & Shoot Camera

The Pentax Optio A40 is a 12MP 1/1.7 inch compact camera — with 480p video. Check GearFocus for current availability, with buyer protection on every purchase.

Pentax Optio A40 Point & Shoot Camera

Pentax Optio A40 Point & Shoot Camera

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Camera Overview — Pentax Optio A40

The Pentax Optio A40 is a 12MP point-and-shoot compact camera built around a 1/1.7-inch sensor capable of delivering a maximum resolution of 4000x3000 pixels. It offers an ISO range spanning from 64 to 3200, giving shooters flexibility across a wide variety of lighting conditions. The camera features a 2.5-inch TFT LCD display with 232,000 dots of resolution, making it straightforward to compose shots and review images in the field.

Autofocus is handled via a contrast detection system, which is well-suited to the deliberate shooting pace typical of compact cameras in this class. For storage, the A40 accepts both SD and SDHC cards, providing compatibility with a broad range of readily available media. The camera is powered by a rechargeable Li-Ion battery and connects to a computer or other devices via USB.

Video capture tops out at 480p resolution. The body measures 89 x 57 x 23.5 mm and weighs just 150g, making it genuinely pocketable. A built-in flash is included, and the unit has no weather sealing.

There is no image stabilization — neither in-body nor digital — so shooters should be mindful of camera shake in lower light situations.

Key Features — Pentax Optio A40

12MP 1/1.7-Inch Sensor: Captures images at up to 4000x3000 pixels, a relatively large sensor size for a compact camera of this class.

ISO 64–3200 Range: Covers a wide sensitivity range, from clean base exposures in bright light to usable shots in dimmer conditions.

2.5-Inch TFT LCD: 232,000-dot display makes it easy to compose shots and review images without a separate viewfinder.

Genuinely Pocketable Body: At 150g and 89 x 57 x 23.5 mm, the A40 fits comfortably in a shirt or jacket pocket for everyday carry.

Built-In Flash: Onboard flash provides a basic fill or low-light option without requiring any external accessories.

SD and SDHC Support: Compatible with widely available SD and SDHC cards, making storage easy to source and replace.

Camera Specifications — Pentax Optio A40

Pentax Optio A40 full specifications
SpecDetail
Use CasesTravel
TypePoint and Shoot
Sensor1/1.7 inch
Resolution12MP
ISO Range64 – 3200
AF SystemContrast Detection
Max Photo Resolution4000x3000
Max Video Resolution480p
Image StabilizationNone
Display2.5 inch TFT LCD
Display Resolution232,000 dots
Storage MediaSD, SDHC

Description — Pentax Optio A40

The Pentax Optio A40 is a compact point-and-shoot camera centered on a 1/1.7-inch, 12MP sensor capable of capturing stills at up to 4000x3000 pixels. Its ISO range of 64–3200 provides meaningful flexibility for shooting in a range of lighting environments. The camera's 2.5-inch TFT LCD display with 232,000 dots of resolution serves as both the primary viewfinder and review screen, since no optical or electronic viewfinder is present.

Autofocus operates via contrast detection. Storage is handled by SD and SDHC cards, and the camera connects externally via USB. A built-in flash is on hand for darker scenes.

Weighing just 150g and measuring 89 x 57 x 23.5 mm, the Optio A40 is a genuinely slim and lightweight camera. It should be noted that there is no image stabilization of any kind and no weather sealing, and video is capped at 480p resolution. Wireless connectivity such as Wi-Fi and Bluetooth is absent, making this a straightforward, wired-only compact.

Pros — Pentax Optio A40

  • ✓12MP sensor with 1/1.7-inch size delivers a maximum image resolution of 4000x3000 pixels
  • ✓Wide ISO range of 64–3200 provides flexibility across varied lighting conditions
  • ✓Compact body at just 150g and 89 x 57 x 23.5 mm makes it genuinely portable

Cons — Pentax Optio A40

  • ✗No image stabilization of any kind (neither in-body nor digital) per specifications
  • ✗Video capture limited to 480p maximum resolution
  • ✗No Wi-Fi or Bluetooth connectivity for wireless image transfer

Reviews — Pentax Optio A40

Videos — Pentax Optio A40

Thrift Store Score: Pentax Optio E40 Digital Camera — CarnelProd666

Resources & Downloads — Pentax Optio A40

Manuals & Guides

Frequently Asked Questions — Pentax Optio A40

What sensor size and resolution does the Pentax Optio A40 use?+
The Optio A40 uses a 1/1.7-inch sensor with a 12MP resolution, producing images at a maximum size of 4000x3000 pixels. This sensor size is relatively large for a compact point-and-shoot camera.
What is the ISO range on the Optio A40?+
The camera offers an ISO range from 64 to 3200. The lower end provides clean images in bright conditions, while ISO 3200 allows shooting in dimmer environments.
Does the Pentax Optio A40 have image stabilization?+
No. According to the specifications, the Optio A40 has no in-body image stabilization and no digital image stabilization. Photographers should account for this in lower light or when shooting at slower shutter speeds.
What memory cards are compatible with the Optio A40?+
The camera accepts SD and SDHC cards, both of which remain widely available and affordable. There is no support for additional card formats based on the specifications.
Can the Pentax Optio A40 shoot video, and at what quality?+
Yes, the Optio A40 supports video recording with a maximum resolution of 480p. This is standard-definition footage, which may feel limited by modern standards.
How does the Optio A40 connect to a computer?+
The camera connects via USB (non-USB-C). There is no Wi-Fi or Bluetooth support, so file transfers rely on a wired USB connection or removing the SD/SDHC card directly.

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