I like your logo the best.
But I don't quite like the "Mona Lisa Solid ITC TT" the "E" and the "R" look deformed to me. I do like the diferent of type between "Apertus" and the rest, and i do think a oldish yet stylish "Apertus" lends more toward a "grounded in knowledge" idea wich i like, it's just that I don't like that style. Yet still I do like the lower part style.
if the logo is going to be in front of something darker and without detail then the idea of the glowing letters i think would make a reference to the light the camera is meant to capture, rather than the concept of "shinny-glowing apertus" i would find this gimmicky ("it's so great it glows like gold"... total pHail!) so if it's in front of something plain and darker i wouldn't see it as something bad
on the contrary over plain white or lighty surfaces... well what does it represent? Apertus is over the surface, and it has relief, so is this SSAO (Screen Space Ambient Oclussion
)? if this is the idea i would definetly use some other color for the letters diferent than the plain color of the background, not something forced but something controlled in order to stand out just slightly, rather than the SSAO effect.
all I've posted can be scarapped to death if the background is detaily, with diferent colors interactions going on or stuff like this.
the problem with the rotated A is that I read "pertus" and then since I don't get what kind of name is "Pertus" I then rewach it and see the "A", yet still what does Apertus means? it's not easy to see quickly (specially if you don't know latin or any romance language) so the rotated A to me stands out too much as something trying to have attention. but it's a wrong kind of attention.
also the rotated A it's an eye, but an strange eye, because it doesn't have roundess, if you do change the A to have the middle line reounded like an open eye from the side then suddenly it's more difficult to see it like an "A" (because an "A" it's all lines) so it might be difficult to balance... i've seen this idea on many places, using A's as eyes but every time they had to put like beams of light under the rest of the words to make understandable that the "A" was an eye or somthing making a reference to "vision". this is I think because just the "A" alone isn't enough.
maybe, if you limit the A to the height of the round part of the "P" so the P sticks down freely as the "t" sticks up freely, you would associate the "A" to "pertus" more easily, but the problem of the "A" as an eye remains.
also the color choose sheeme reminds me so much of the Barcelona film comission
wich is so clunky and... i don't know... it's itchy on the eyes
and I would definitely go for "Apertus - Open Source Cinema" than "A... - O..S.. Camera"
I still see that type as blocky and somewhat unstylish, maybe because it's squareness-with-round-edges wich to me is quitecontradictory, and i don't see what anything of this has to do with the concept of Apertus.
Also a certain feeling of the 80's ramains even without the metallic material, and with so much lines and hard lines going on it seems to have a movement like the type of the title on Balde Runner, to me this logo is Apertus from the space... wich another time I don't associate with the concept of open source cinema. so I'm not fond of it. the "movement" is give by the S line that follows under "Apertu" the colliding toe of the "p" and the "A" wich gives the true feeling of movement to it all, because of the elongated A and it's cursiveness.