> As the son of a photographer, I'm not sure you're making any sense.
> May we have a little more detail, please?
>
> Supposing the license plate is black letters on white plate. And so
> the negative is white numbers on a black plate. Would that be any
> harder to read?
> As the son of a photographer, I'm not sure you're making any sense.
> May we have a little more detail, please?
>
> Supposing the license plate is black letters on white plate. And so
> the negative is white numbers on a black plate. Would that be any
> harder to read?
Apparantly if you print the image of a b/w negative as it is you will
be
able to see the numbers.
The over exposed white then becomes black and the black letters on the
plate
become white thus able to see the plate number.
CY: I've worked with a lot of black and white negatives. Sometimes you
need a magnifier, but you can make out numbers either in negative or
positive.
However I am reading that a number of these cameras use IR instead of
visible light, therefore no overexposure flash.
CY: IR would be OK daytime, as dark letters or background absorbs more
solar heat. I'm not sure if it would help any during th enight.
Alo they have available a plate cover, which I think is the best. It
makes
the plate numbers visible only if you are looking directly straight at
the
plate from behind.
It was featured on CSI: Miami
CY: That coudl be useful.
On the other hand some states have police cars hidden on the side of
the
road taking pictures of speeders from behine. Maybe use both the spray
and
plate cover?
CY: Back to the point, you may need a magnifying lens, but you don't
need to print a negative to be able to read numbers.
> It does work, but the company only needs to reverse the negative to
> see the
> numbers on the plate.
Trent - 07 Dec 2006 23:35 GMT
>> As the son of a photographer, I'm not sure you're making any sense.
>> May we have a little more detail, please?
[quoted text clipped - 33 lines]
> CY: Back to the point, you may need a magnifying lens, but you don't
> need to print a negative to be able to read numbers.
If the image is over exposed enough then you cannot.
The problem they have is that I am sure they are using CCD camera. So makes
me think they are mass producing tickets since I heard revenues are in the
millions.
Makes it time consuming to go through all those few where the plate is not
seen
>> It does work, but the company only needs to reverse the negative to
>> see the
>> numbers on the plate.