Mac 300 and UV?

[DanielArkley]

I hear that on the fixed colour wheel of the Mac 300, you can find a UV filter. Does it actually cause things to fluoresce as they would under UV tubes, or is it just a very rich purple?

 

Cheers!

[chris512]

if I remember correctly off the top of my head (dangerous I admit!) there are two 'UV' style colours on a 300.

 

one being quite a bright purple UV which gives a lot of purple looking light making people think their seeing UV, and then theres an actual UV pass colour that is almost UV so doesn't appear to let much light out but actually is giving off almost true UV (like your standard UV tubes).

 

 

hope that makes sense!

[minimac]

I have some minimacs and it has a uv filter. they also have a deep purple. the uv is not as good as a uv tube but it does make white shirts shine!!!

 

saying that, as the mac 300 is more powerful I would think it is as good as a tube!

[TomLyall]

erm... do the 300s not have a UV filter (as in, removing UV light) between the lamp and the colour wheel, im sure the 600s do and just wondering if the 300s do too...

[Stu]

The Mac 600s do not have any as standard UV capabilites, be it on a seperate filter or on the fixed colour wheel.

 

The 300s have the UV filter on the fixed colour wheel, but wether it's 'proper' UV I cannot comment on.

 

Stu

[the kid]

As far as I knew UV was vaporised mercury in a tube, it could not be made with filters.

 

I do know that there are 2 different types, and they are both different wave-lengths.

The one I have used for PCB making is a whiter uv than the one I used for panto which was more of a violet.

[Mush]

As far as I knew UV was vaporised mercury in a tube, it could not be made with filters.

 

Remember you cant Make a colour with filters, only filter it out.

Like most moving head lights a MAC has a discharge source , which are all nercury based with added metals.

 

I do know that there are 2 different types, and they are both different wave-lengths.

The one I have used for PCB making is a whiter uv than the one I used for panto which was more of a violet

 

In fluroscent tubes you get Blacklight which is your paler colour and you get Blacklight Blue which is the dark vilolet tube with less visible light.

 

The dark violet glass which is also used in the MAC is called Woods Glass, made with nickel oxide added to the glass. Named after Professor Robert W Wood, Modern Wizard of the Laboratory

 

http://msp.rmit.edu.au/Article_04/06.html

 

Its an efficent visible light blocker and only allows light below 400nM and above 700nM to pass through, hence the dark violet colour.

 

Now you too can bore people rigid with obscure facts ;-)

[Techno_Monkey]

Yes they do have a pretty good UV in them, used it a few times with some good effects.

 

Not a huge fan of the bright purple one though :D

[vinny baby]

I have used many fixtures now that have the so called 'UV' filter, most of them are just coloured effects, not actual Ultra violet light. I dont tend to use these filters for creating UV type effects, I tend to use them just for deep coloured washes, more of a colour effect rather than UV effect.

 

I tend to use UV stips, or UV cannons for true ultra violet effects.

 

also the light output from a moving light can be quite dim when using the UV filter unless your using something like a 1200w sourse.

 

vince

[Cwest]

Ok, Mac’s and UV. The lamps used inside Mac’s do give off UV, normally in very nasty amounts. However UV is very easily stopped, just a piece of normal everyday glass can bock UV, (ever tried getting sun tan in a green house? It doesn’t work!)

 

So the total amount of UV coming out of any Mac is very small, because it’s blocked by all the regular lenses inside the light. The UV filters in Mac’s are designed to block most of or all the frequencies of visible light, leaving mostly UV. However the beam of light you get is nowhere near are strong as a dedicated UV fixture.

 

I hope this answers all the questions.

[DanielArkley]

Thanks for replies all, looks like it's time to get the UV flourrie tubes out.