Filters needed when shooting molten glass?

E

ebsseattle

Active member
I have a project coming up to shoot some footage in a glassblowing hot shop but was wondering, aside from the aesthetic look, is some sort of filter necessary to not damage either the lens or sensor in a Sony FS700 when shooting molten glass? I don't know if the brightness of the hot glass would affect optics, but figured I'd ask in case anyone has any knowledge.
 
I shot a program about glassblowing with an old tube-type Ikegami many years ago and encountered no special problems. Glass that is being worked outside the oven has a deep inner orange glow, but it's not bright in the same sense as, say, an incandescent filament. It fit in well with the ambient light on the room and just added a nice warm color cast to the faces of the glassblowers and the tools and settings around them.

Shooting right into the oven was also not a problem, as it metered out as approximately equal to outdoor daylight. Of course, you don't want to go too close due to the actual heat radiating out that could damage the camera (or the operator!). Stick with tungsten color balance for this.

The only problematic shots were working in the shop where the foreground exposure had to be balanced with the very bright glow from the ovens in the background -- almost a shooting into the sun type situation. I didn't fear for my camera -- it was about like working outside, as I said -- but it was difficult to hold detail in the bright areas while properly exposing the workers and their glass.

- Greg
 
Thanks Greg. That's exactly the kind of feedback I was looking for. So as I was hoping, the only complication I could run into would be the actual heat from the furnace.
 
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