[Konvas] lighting pars vs. fresnels (off topic)

[t byrne]

Here's another useful link with a full range of PAR cans and lamps shown:
http://www.stagelightingusa.com/?gclid=CN2R5_G-ypUCFRoSFQodRnMcjQ

t byrne wrote:

>Not an odd question at all, but a good one.
>
>The answer is that there are tungsten PARs. The key phrase here is "of 
>the same design".  The PAR was originally designed for stage use, 
>specifically for concert lighting, where the weight of heavily loaded 
>portable trusses was a huge factor.  The tungsten  incandescent PAR 
>lamps were borrowed from the aircraft industry, and the problem was that 
>the lens was molded into the lamp (bulb, to you non-lighting people) 
>itself and therefore was not interchangeable. (I.e., to change beam 
>parameters you had to re-lamp.)  And very wasteful, although I guess 
>glass could be recycled.  I put this all in the past tense, but they're 
>still available, though they've been supplanted in the pop music 
>industry by moving lights, which save even more weight by doing multiple 
>duty.  Ronnie Altman is still making them: http://www.altmanltg.com/
>
>Terry
>
>  
>
>>Odd lighting question.  What is the advantages/disadvantages of HMI 
>>pars vs. HMI fresnels and why isn’t there a line of Tungsten pars like 
>>HMI pars (with switchable lenses).  I’m assuming the major difference 
>>is the bulb moving vs. the lens changing for focus.  I like using HMI 
>>pars a lot they are very manageable and slick, kinda seems like 
>>Tungsten pars of the same design would be useful considering that I’m 
>>never that detailed with the focus knob on fresnels.  Also seems like 
>>they would be less subject to breaking because they don’t have any 
>>moving parts.  Thoughts?
>>
>> 
>>
>>Respectfully,
>>
>>Bradley
>>
>>
>>    
>>
>
>
>
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