I like both. The white wall is uniform, therefore it clearly shows the beam profile at a given distance. Hotspot to spill size and their comparative intensity are easy to see on the uniform wall.
White wall shots at different shutter or aperture speeds are useless because these values doesn’t mean anything without knowing the which camera is being used or the sensor size for reference. This is a practice that was standardized by a famous reviewer from CPF because back then we had 100-200 lumens max lights and one could see which had higher output by comparing the beamshots directly.
IMO just one white wall shot is enough for a review, or maybe two if the flashlight has severe tint shift at lower modes. It’s very difficult to correctly show beam profile/quality with outdoor shots.
- show the pattern of the beam (hotspot, floody, narrow, wide) for indoor use
- compare tints
- show tint shifts
show effects of different lenses or reflectors
Outdoor beamshots
I normally take them to:
- show the pattern of beam (throwy, wide) for outdoor use
- show/compare how the tints perform in outdoor environment (that has efect not only in colour rendering, but also in distinguishing or not some things in the dark)
show the range/distance that a flashlight can reach
Some things are better perceivable indoor, against a wall, while others surely stand out in outdoor beamshots.
Agree on beam pattern / tint for white wall shots. But I was looking at multiple pictures shown in #4 of this thread and thought: why do I choose my flashlight based upon that stuff..
But don’t forget that unlike film cameras, digital cameras saturate hard. When a beam’s too bright, on “film” it can look like a decent beam, but only at shorter exposures and “dimmer” shots, can you see things like a bullseye effect, etc.
Quick 10sec goggling turned up a pic like
where you can see the brake lights are sort of pinkish-white from being oversaturated, not bright red as they’d appear in real life.
Same exact thing in a beam’s hotspot when white-wall hunting. BRIGHT!!! masks out subtle but potentially annoying artifacts.
That said, I can’t seem to take decent beamshots to save my life. :laughing: