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===Need to Check=== | ===Need to Check=== | ||
" A lamp alignment should be performed when a new lamp is installed and periodically thereafter because the position may drift over time." - I think it actually only needs to be done a second time after a certain number of hours but after that the position does not drift. Must verify. --[[User:Rlyon|Rlyon]] ([[User talk:Rlyon|talk]]) 10:59, 17 February 2019 (PST) | " A lamp alignment should be performed when a new lamp is installed and periodically thereafter because the position may drift over time." - I think it actually only needs to be done a second time after a certain number of hours but after that the position does not drift. Must verify. --[[User:Rlyon|Rlyon]] ([[User talk:Rlyon|talk]]) 10:59, 17 February 2019 (PST) | ||
I believe the amount of drift will depend on the installation. An auditorium with a steeper throw will drift more than one where the lamp is on an even plane. Based on our technician's recommendations we refocus our digital lamps every month. In a perfect world, lamps for film projectors should probably be refocused on a similar schedule. [[User:JesseCrooks|JesseCrooks]] ([[User talk:JesseCrooks|talk]]) 20:40, 17 February 2019 (PST) | |||
===Luminance=== | |||
Added a discussion of fixed-height vs. variable-height masking, since it greatly affects the light requirements. [[User:JesseCrooks|JesseCrooks]] ([[User talk:JesseCrooks|talk]]) 20:40, 17 February 2019 (PST) | |||
Latest revision as of 21:40, 17 February 2019
-Added "measuring luminance" and "damage" sections - added to "general recommendations" - deleted sentence about carbon arc lamps having superior color quality, can go on a carbon arc page - added "lamp alignment steps" made that section a little easier to follow step by step - added a "see also" section --Rlyon (talk) 09:43, 17 February 2019 (PST)
Need to Check
" A lamp alignment should be performed when a new lamp is installed and periodically thereafter because the position may drift over time." - I think it actually only needs to be done a second time after a certain number of hours but after that the position does not drift. Must verify. --Rlyon (talk) 10:59, 17 February 2019 (PST)
I believe the amount of drift will depend on the installation. An auditorium with a steeper throw will drift more than one where the lamp is on an even plane. Based on our technician's recommendations we refocus our digital lamps every month. In a perfect world, lamps for film projectors should probably be refocused on a similar schedule. JesseCrooks (talk) 20:40, 17 February 2019 (PST)
Luminance
Added a discussion of fixed-height vs. variable-height masking, since it greatly affects the light requirements. JesseCrooks (talk) 20:40, 17 February 2019 (PST)