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<blockquote data-quote="TJ Cornish" data-source="post: 82988" data-attributes="member: 162">Re: What fixture?Be aware that the sharpness of the projected gobo depends on both beam angle and the era/quality of lens tube.&nbsp; Early S4s (the 575w only ones) had poorer optics than the newer ones, so if you go used, try to at least get a 750w capable fixture.&nbsp; Also note that the narrower the fixture, the sharper.&nbsp; 36° fixtures are OK, 26° are sharper, and 50° are pretty poor.I have a large number of Strand Century lekos that I bought for a song.&nbsp; They are inferior to the S4 for gobo projection since the gate temperature (where the gobo goes) is so high, it actually burns the steel gobos.&nbsp; S4 fixtures run at about half the gate temperature (500° for S4 instead of 900° for Strand).&nbsp; Glass gobos are better than steel, as steel expands when heated, which tends to bow the gobo.&nbsp; This affects your final focus, as no matter how you focus the light, some of the gobo will be in the focal plane, and some out.I&#039;ve purchased used 750w S4 fixtures for $200.If you don&#039;t need a lot of brightness, there are special purpose gobo projectors out there that are lower wattage, and even LED.&nbsp; Apollo makes one, and some of the custom gobo houses actually have kits that include the projectors.</blockquote>

[QUOTE="TJ Cornish, post: 82988, member: 162"] Re: What fixture? [SIZE=2]Be aware that the sharpness of the projected gobo depends on both beam angle and the era/quality of lens tube. Early S4s (the 575w only ones) had poorer optics than the newer ones, so if you go used, try to at least get a 750w capable fixture. Also note that the narrower the fixture, the sharper. 36° fixtures are OK, 26° are sharper, and 50° are pretty poor. I have a large number of Strand Century lekos that I bought for a song. They are inferior to the S4 for gobo projection since the gate temperature (where the gobo goes) is so high, it actually burns the steel gobos. S4 fixtures run at about half the gate temperature (500° for S4 instead of 900° for Strand). Glass gobos are better than steel, as steel expands when heated, which tends to bow the gobo. This affects your final focus, as no matter how you focus the light, some of the gobo will be in the focal plane, and some out. I've purchased used 750w S4 fixtures for $200. If you don't need a lot of brightness, there are special purpose gobo projectors out there that are lower wattage, and even LED. Apollo makes one, and some of the custom gobo houses actually have kits that include the projectors.[/SIZE] [/QUOTE]

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