– Prepared by covering 100×100 tempered glass 5T (VLT about 95% or more) with a film of each density.
– Considering that the basic glass transmittance of a vehicle is around 75%, the bare glass has a bright tint of 73% as standard.
– 90% tinting film does not exist on the market. PET shatterproof film was simply used as a replacement for tinting.
– The experiment was conducted by changing each glass sample while keeping the camera exposure fixed.
– There was an exposure difference between the photo and what was actually seen. When the exposure was fixed outside the window, it looked relatively dark at 5%.
If you fix the exposure at 5%, things outside the window will look overexposed. So, I repeat the shooting several times and attach the results that look most similar to what the eye sees.
– Except for 73% and 5% films, these are all common tinting films made by the same company.
– Because it is dangerous on public roads to take and collect photos for all situations, we were unable to provide various materials to allow for photos to be taken in a safe environment. Please understand.
After the experiment.
– Without street lights, it became difficult to identify from the moment the legal limit was exceeded, regardless of whether it was raining or not.
– I was able to clearly perceive that there was light in areas illuminated by streetlights and headlights, even with 35% tinting.
– I already knew this, but the biggest difference between tinting is visibility in areas without light (dark areas).
– When the road drainage is perfect and there is significant reflective paint on the lane, it is very easy to identify the lane even when it rains.
– Although not in the experiment, it was difficult to identify lanes on roads with no drainage or when there was heavy rain, except for bare glass.
– Personally, I don’t think tinting with a concentration lower than 70% will be applied to the front and first row in the future.
– Even people who have 5% tint on their entire glass drive at night on rainy days. But I can’t see anything except the light and the place it shines on.
– For black boxes, there was little deterioration in image quality up to 50%, but from 35% onwards, the deterioration became more severe due to increased sensitivity.
Aside
Driving without tinting and wearing sunglasses at night vs. just driving with tinting on
It varies depending on the density, but my sunglasses are very bright (I can just see my eyes rolling).
There doesn’t seem to be much difference up to 35% tinting.
That is, 35% full tinting = bright sunglasses.
Tint darker than that = darker sunglasses.
.. Heavy tint on the front is just like driving at night with sunglasses on.
(But… I still don’t know why driving with sunglasses on is a crazy thing, but wearing thick front tint isn’t a crazy thing… hmm…)
Are there any photos compared during the day?
yes. Even 5% is visible during the day. So it doesn’t make sense
A photo taken inside that bright tint shop or a photo taken in a car during the day with only the glass in place.
15% highest visibility! …. That’s the sound of a damn side kick.
The main target of comparison for tinting is… tinting or bare glass that meets legal requirements.
It is not a tint of the same density or a darker tint.
3 line summary
1. Films were filmed by covering tempered glass with films of various densities, and results similar to those seen with the actual eye were obtained.
2. If there are no street lights, visibility is low in dark tinting, and when there are street lights and headlights, the light is visible up to 35% of the tinting. When it rains, lane identification is easy only on well-drained roads.
3. Tinting with a density of 70% or less is not suitable for the front. 35% tinting is similar to wearing bright sunglasses. All concentrations are clearly visible during the day, so comparison is meaningless.
Conclusion: Dark tint on a rainy day at night is not visible if there are pedestrians in the dark areas where the streetlights do not reach.