Originally Posted by Craig Peer
Technically, it's not lying to state a projector can produce X contrast, and X brightness, even though they cannot do both at the same time. Any more than stating a pickup truck can do 0 to 60 in X seconds, and has a payload capacity of 2500 lbs., and can tow 6000 lbs., even though it can't do all of those things at the same time. Consumers need to educate themselves regarding products.
Hmmmm….. it isn't about what projectors can do all at once is it? But simply being able to achieve the actual figures quoted I reckon.
Car manufacturers quote specs based on industry standard definitions; 'time' for 0-62, 'weight/mass' for payloads etc.
would expect a car to do its minimum 0-62 whilst pulling it's highest weight, as if it could, then take the weight away and the power to weight would increase massively and the 0-62 would decrease even further thereby rendering the 0-62 time inaccurate, but in a good way
Cars with low 0-62 times have more powerful engines and usually that also means higher load capacity by virtue of the larger/more powerful engine.
In AV the only thing that is measured in a presumably standard way by manufacturers
seems to be lumens. But even then I am guessing there as I am willing to bet they fudge that too.
However, unlike car manufacturers who often quote 0-62 times that err on the cautious side, with projectors, none (?) end up giving their stated specs, and reviewers invariably find that the actual contrast is distinctly lower not higher.
All because they use some non standard way of measuring their units that give exceptional figures. I have not seen any caveats in projector literature that state that lumens may be lower for a given contrast (or vice versa) or words to that effect.
That kind of practice should be outlawed and the playing field levelled so they all use one standard method and so would be directly comparable, just like cars are with other cars.