Quote:
Originally Posted by WM6
Regarding Fujifilm IS Pro, it is dedicated camera with restricted distribution.
Its speciality is that there are not UV and IR blocking filters mounted in front of CCD sensor. In other means this camera is nothing so special (usually comming with Nikon lenses).
You can turn any of other Fujifilm cameras that include Fujifilm "Super CCD" sensor in IS Pro camera UV/IR capability, by open it and removing internal UV and IR blocking filters from sensor.
For so called "X-Ray" infrared photography is easy. You only need a cheap pass thru IR filter, that blocked other visible spectrum of light, including UV spectrum. And you have "X-Ray" infrared photography camera.
For UV spectrum photography (btw. this spectrum has not so called "X-Ray" capability as some of IR spectrum's has) adding UV pass thru filter is not enough. Namely standard photo lenses, made out of lead glass, filter out a good part of UV spectrum. So, apart from pass thru UV filter, we need special and not really cheap UV pass thru lenses (UV Quartz lenses - if even available for our camera) too. In most cases, if we are interesting in UV photography it is best to use cheap camera with plastic lenses which are not anti-UV coated.
In comparison to IR, UV spectrum has poor penetrating capability and is of low use in thru surface detecting. Additionally we face in UV light band with focusing problems and UV photos are more like antique sharp-less BW photography).
IR "X-Ray" photography is more interesting and easy to achieved. Its "X-Ray-ing" penetrating capability depend on IR spectrum we use (there is not only one IR spectrum).
Mentioned IS Pro camera is a little out of date and not best suited to IR photography regarding sensitivity. If sensor sensitivity is too low, we cannot detect its own IR radiating spectrum of objects (of course it depend of sensor spectrum too). IS Pro camera sensitivity is relatively poor (ISO to 3200) in comparison to some modern cameras like like Nikon D7000 or Canon EOS650D with ISO to 25600.
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I think you are right WM6
I also think that this kind of treasure detecting is possible but it is in its early stages.
I am nearly sure that there special occasions or conditions that you can have positive results.
But we still in a situation that these conditions are not defined yet.
Still looks interesting.
It is many people invested lots of money in this here in Greece.Sooner or later we will know if it holds some truth.
>>>>>Coming now back to the thread you started>>>>>>
Yes, you are right WM6 that this has nothing to do whith Gamma rays.
My opinion and what I know up to now is that gold if burried for a long time is producing radioactive isotopes or particles which they are probably attracted from the nearby environment being analogue to the quantity and time burried.
They say that Russians used Gamma ray equipment to detect caves in Afganistan.They could have a picture in a screen similar to an X ray photo in real time.
There are some people over your country they owe this Russian military equipment that work in this principle and they come over here in Greece for treasure hunting.Somebody told me that they were successfull once and this made them come back over and over again.
They say that you have to wear a special suit in order to operate it and this is because it is highly radioactive.You can adjust power according to the desireable distance you want to be checked and in proportion you can look through slopes in some depth like X ray operating systems.
I remember that Greek TV was taking about that just before Russians were to leave Afganistan.
Regards
g-sani