Pentax CS-310 Cable Switch 3.5′ for K-70 Digital SLR

The Pentax CS-310 Cable Switch is a wired remote shutter release designed specifically for the Pentax K-70 Digital SLR. Featuring a 3.5-foot (approximately 1.07 meters) cable, it connects to the camera’s microphone terminal, allowing for precise shutter control without touching the camera body. This helps prevent camera shake, making it ideal for macro photography, long exposures, or astrophotography. The switch includes a two-stage button: a light press activates autofocus and metering, while a full press captures the image. For extended exposures in Bulb mode, the shutter can be locked in the open position by sliding the button to the “Hold” setting. Compact and lightweight, the CS-310 is an essential accessory for photographers seeking steady and controlled shooting.

Specifications

Compatibility:

• Pentax K-70 Digital SLR

• Pentax KP Digital SLR
  Note: The CS-310 is specifically designed for these models and is not compatible with other Pentax DSLRs.

Connection:

• Interface: 3.5mm stereo jack

• Attachment: Connects to the camera’s microphone terminal (not a dedicated remote port)

Cable Length:

• Approximately 3.5 feet (1.07 meters)

Functionality:

• Two-Stage Shutter Button:

  • Half-press: Activates autofocus and exposure metering

  • Full press: Captures the image

• Bulb Mode Support:

  • HOLD Function: Locks the shutter open for extended exposures by sliding the button to the “HOLD” position while pressed down

Design & Build:

• Type: Wired remote shutter release

• Power Source: Draws power directly from the camera

• Construction: Lightweight and compact for portability

• Color: Black

Ideal Usage:

• Macro Photography: Minimizes camera shake during close-up shots

• Long Exposures: Essential for capturing sharp images during extended exposure times

• Astrophotography: Facilitates clear night sky photography by reducing vibrations

Additional Notes:

• The CS-310 is the only supported wired remote for the Pentax K-70 and KP models. Other wired remotes are not compatible with these cameras.

• The CS-310 is discontinued by the manufacturer and may be challenging to find through official channels. Availability is limited to existing stock from retailers.