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collection | photos: incandescent test shots

Bulb: Custom 100W GLS tungsten, single coil.
Subject: ESLA Bi-Multi Group "AL" 2-way 160o
Camera: Olympus C-8080 Wide Zoom


This collection of photographs were taken at different shutter speeds to determine the best exposure time to 'correctly' photograph a GLS source in a mirror lantern at night. 'Correctly' here is purely subjective; but as a rule of thumb, at night the individual mirrors of the lantern can be discerned by eye, and this could be used as a metric whilst looking at the pictures.

Loss of detail of the mirrors began at 1/640 and 1/500 shutter speed. Unfortunately, this exposure didn't capture any of the surrounding foliage nor the bracket itself.

All detail of the mirrors disappered after a shutter speed of 1/60. All subsequent slower speeds suffered from more and more glare caused by over-exposure.


1/4000 second



1/3200 second



1/2500 second



1/2000 second



1/1600 second



1/1250 second



1/1000 second



1/800 second



1/640 second



1/500 second



1/400 second



1/320 second



1/250 second



1/200 second



1/160 second



1/125 second



1/100 second



1/80 second



1/60 second



1/50 second



1/40 second



1/30 second



1/25 second



1/20 second



1/15 second



1/13 second



1/10 second



1/8 second



1/6 second



1/5 second



1/4 second



1/3 second



1/2.5 second



1/2 second



1/1.6 second



1/1.3 second