The Invercone incident light adapter converts your Weston Master Universal exposure meter into a true incident-light meter, allowing you to measure the light falling onto your subject rather than the light reflected from it.

Incident metering delivers more consistent and dependable exposures, especially in scenes with high contrast, dark clothing, light backgrounds, or uneven lighting. This makes the Invercone an essential accessory for portrait photographers, studio shooters, and anyone working with classic film cameras who values accuracy and repeatability.

The Invercone slips easily over the meter’s light cell and is simple to use in the field—just take the reading from the subject’s position, pointed toward the camera.

A classic and increasingly hard-to-find accessory for photographers using vintage Weston meters.

Key Features

• Designed for the Weston Master Universal exposure meter Models 715 and 735 Master II universal meters

• Enables accurate incident-light readings

• Reduces exposure errors caused by subject reflectivity

• Ideal for portrait, studio, and outdoor photography

• Simple slip-on design

• Period-correct accessory for vintage light meters

Included: Box, Integrating cone, Auxiliary Multiplier

Warranty:  Warranty is 90 days.

Operating Condition: Excellent. No issues.

Cosmetic Condition: Like New

FREE SHIPPING to Canada and USA on most orders over $250. This item ships from our location in Perth, Ontario Canada. Local pickup in Perth can be arranged and is always free. We have many items that are not listed online. Please inquire.