Contax G2 Flash TLA 140: Sync & Use Guide

By Matphoto | Published: 2026-10-27

Category: How-to Guides

Learn how to sync and use the Contax G2 TLA 140 flash for film photography. Step-by-step setup, common mistakes, and rental tips.

Quick answer

Mount the TLA 140 onto the Contax G2 hot shoe, set the camera to Aperture Priority or Manual, and the flash will automatically sync at 1/200s or slower. Use a fresh CR123 battery for reliable recycling.

Why the TLA 140 works best with the Contax G2

The TLA 140 is designed specifically for the Contax G2 and G1 systems. It communicates TTL metering directly through the hot shoe contacts, so you don't need extra cables or adapters. The flash covers a 28mm field of view, matching the G2's wide-angle lenses perfectly.

One trade-off: the flash recycles in about 4.8 seconds with a fresh CR123 battery. That's fine for casual shooting but can feel slow during fast-paced sequences. Keep a spare battery handy if you shoot quickly.

How to set up and use the Contax G2 TLA 140 flash

Insert a fresh CR123 battery: Open the battery compartment on the side of the TLA 140. Insert a CR123 battery with the positive end facing the contact spring. Close the compartment securely. A weak battery increases recycle time beyond 4.8 seconds and may cause inconsistent exposure.
Mount the flash on the Contax G2 hot shoe: Slide the TLA 140 onto the G2's hot shoe until it clicks. Tighten the locking wheel on the flash base to prevent accidental disconnection. If the flash doesn't fire, check that the locking wheel is fully tightened – a loose connection is the most common cause of misfires.
Set the camera to Aperture Priority (Av) or Manual (M): Turn the G2 mode dial to Av or M. The camera will automatically sync with the flash at 1/200s or slower. In Av mode, the camera selects the shutter speed; in M, you choose a speed at or below 1/200s. Avoid shutter speeds faster than 1/200s – the G2 cannot sync with the TLA 140 above that speed, causing partial black frames.
Turn on the flash and check the ready light: Press the power button on the TLA 140. Wait for the red ready light to glow steadily – this indicates the flash is fully charged. The light typically takes about 4.8 seconds with a fresh battery. If the ready light flickers or doesn't come on, replace the battery before troubleshooting other issues.
Compose, focus, and shoot: Half-press the G2 shutter button to focus and set exposure. The TLA 140 will fire automatically when you fully press the shutter. The TTL system adjusts flash output for correct exposure. For consistent results, keep the subject within the flash's effective range – roughly 1 to 5 meters with ISO 100 film.

Product facts

CONTAX G2 FLASH TLA 140: The TLA 140 is a TTL flash that covers the angle of a 28mm lens and uses a CR123 battery with a 4.8-second recycle time. This means you get accurate automatic exposure with your G2's wide lenses, but you'll need to wait a few seconds between shots for the flash to recharge.
CONTAX G2 FLASH TLA 140