Clarity on the lights for indoor shot

[Cinepugno]

Hello,
I use regular 8, Single 8 and 9.5 mm, and I've had always good results IN INDOOOR with black and white films with a spotlight "Flectalux" 1000 watts 3400 kelvin; and with color film with the same spotlight and filter Wratten 80A. Asa the setting as required.

But I wanted to ask, who is prepared, these questions:

1) Whether we can read that the 3400K are more suitable for the Wratten filter 80B, while the 3400K for the 80th. I understand that the difference is almost imperceptible, but because the labs recommend only the 80A? I would not be better with the 80B, since I have a 3400k spotlight?

2) Who can explain the differences between halogen, tungsten and quartz-iodine? My Flectalux should be halogen spotlight, but on the internet and Cinema's manuals I find written that halogen and tungesten are the same thing, which also halogen and quartz-iodine are the same thing. Then, I have found written that halogen lights are just 3400K, while tungsten are 3200k.
In short, a mess... Someone could do more clarity?

Thank you all.

[woods01]

In general professional tungsten movie lights are 3200. Household light bulbs are about 3400. Kodachrome was tungsten balanced for 3400 as it was considered an amateur stock, while the professional colour negative and reversal films were balanced for 3200. So most of the home market movie lights that you typically find with an old super 8 camera are 3400K, while professional tungsten lights are 3200K.

In the early days of colour film, the most common big light source was tungsten bulbs. Over the years additional light sources were developed and improved and you can even get in hardware stores today fluorescent lights that are 3200K (or tungsten balanced) or 5500K (or day light balanced). Since most pro lights were designed around 3200K and we've transitioned from film capture to digital, I feel we still refer to lights as being tungsten or daylight balanced as part of the traditional language of photography even though the line was blurred long ago.

So yes the 80B filter is what you'd want to ideally use but most of us get away with whatever filter we have on hand. If perfect colour is important and you're digitizing your footage. Consider shooting a few seconds of a colour chart (or even just a white card) with your lighting & filter combination to help with adjusting any filter issues in post.

[carllooper]

Came across this other day.

http://au.lifx.co/

[Cinepugno]

Thank you, woods01 now beginning to have a better idea.
The confusion comes from the fact that the halogen lamps, of the type generally used for 8mm-9.5mm-Single8-etc. films, type Flectalux, Reflecta, Bolex, etc., in some ads for sale and various datasheet are erroneously called "tungsten-halogen", as they are are ONLY halogen and 3400K, while a spotlight tungsten, 3200k, is, for example, this: http://______www_____.porters.com/interfit-3200k-tungsten-studio-light.html
Now I know that with the combination halogen lamp 3400K + Wratten 80A I can continue to get along well, without the need to buy a 3200k tungsten spotlight, because the films that I use, (8mm, Super8... Chrome, Orwo, Agfa...) work well in indoors with a halogen 3400K + Wratten 80A (even though the 3400K would be indicated with use of the Wratten 80B, does nothing, that's okay too 80A, with these filters there are not substantial differences).
Despite my bad english, you say that I understand ?