Regardless of how stylish or ugly a light bulb appears, its main purpose is to provide illumination. When lit, both bulbs give out a pleasant warm light similar to a partially dimmed incandescent filament light bulb, and would be adequate for low level illumination such as while watching TV or decorative lighting above a home bar or seating area.
Despite being rated at 40 watts, these bulbs appear to provide the equivalent amount of light as a 25 watt standard GLS incandescent light bulb, with the G19 model appearing slightly brighter. The lower efficiency is mainly due to the long length of the filament as more heat dissipates over the longer filament length than modern halogen light bulbs with a short tightly coiled filament.
To prevent the filament appearing as a solid white blob in the photographs, these photographs were all underexposed, along with a reduced intensity external bounce flash to prevent most of the area around the lamp shade turning solid black.
The long filament of the G80 reduces the shadow intensity around the lamp and produced some interesting light reflections within the bulb when looked at from different angles.
A few strands of the filaments noticeably vibrate and wobble during the first minute or two after the bulb is switched on, probably due to the convection of the gas within the bulb as it heats up.
The following shows the bulb from its side view:
A close-up view of the lit filament, which also shows the various reflections within the bulb:
A view from higher up, where the reflections spread apart:
The unusual square helix filament along with the ‘T’ shape stem makes this bulb appear quite different when viewed from one angle to another.
The following is how the filament appears head on:
As shown above the lamp, this bulb produces a noticeably stronger shadow than the G80. The shadow is still much softer than what an “eco” halogen filament light bulb would produce.
The following is at a 45 degree angle to the left, which gives a better view of the filament:
A close-up look at the filament:
The filament gives a pretty good impression of a carbon filament. However, a true carbon filament light bulb would generally have a circular helical shape.
The following is the view from the side:
From this angle, the filament shape produces some subtle lighting patterns around the bulb as shown in the lamp shade above.
Let’s head to the next page to check their power consumption and temperature….