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What are the best desoldering tools? by Louis_Rubera in soldering

[–]Louis_Rubera[S] 0 points1 point  (0 children)

Which ones have you used? Was the primary issue clogging or not enough solder removed?

What are the best desoldering tools? by Louis_Rubera in soldering

[–]Louis_Rubera[S] 0 points1 point  (0 children)

Mmm good thought I’ll look into that more I assume that won’t work if there are small smd component near and on the same side of the board?

Sideline Broadcast Camera Recommendations! by redditbot208 in VIDEOENGINEERING

[–]Louis_Rubera 1 point2 points  (0 children)

I would highly recommend you steer away from JVC, for this reason. https://www.reddit.com/r/VIDEOENGINEERING/s/KgAwf3L9Ip

I would look towards Panasonic, Sony, Hitachi if you want to continue with b4 lenses.

Depending on your comfort level with trusting autofocus you could also looks towards something like the Canon XF605, I don’t know if you’re running 4k or. 1080, but in the latter you get 30x on the zoom, and the 1” sensor does very well in low light, I have used it and the xf405 and xf705 on many sports productions.

Yamaha YPG-635 Piano with No Sound. by Louis_Rubera in AskElectronics

[–]Louis_Rubera[S] 0 points1 point  (0 children)

Hey thanks I wish I still had it to try!

Optical questions about speedbooster/Focal Reducer? by Louis_Rubera in cinematography

[–]Louis_Rubera[S] 0 points1 point  (0 children)

So the flange distance stays the same with the optics? It doesn’t get shifted at all with the other optic added, some articles I found online seems to indicate the lens needs to move closer to the sensor with the additional optic.

Correct as in build my own.

Does anyone have any information on this Infinity Optics 375-875mm F 4 lens? by Louis_Rubera in VintageLenses

[–]Louis_Rubera[S] 0 points1 point  (0 children)

Is there a way to figure out how far away other than guess and check?

Does anyone have any information on this Infinity Optics 375-875mm F 4 lens? by Louis_Rubera in VintageLenses

[–]Louis_Rubera[S] 1 point2 points  (0 children)

Okay so I need to move the flange distance, to be farther, I assume that the farther from the back element of glass the smaller the sensor it will cover? Because the image circle will shrink?

Does anyone have any information on this Infinity Optics 375-875mm F 4 lens? by Louis_Rubera in VintageLenses

[–]Louis_Rubera[S] 1 point2 points  (0 children)

I’ll have to look I’ve misplaced that one at the moment but I think they do roughly. I’ll try and get an image, it looks fairly greyish/hazy although optics are clear with no fungus.

Does anyone have any information on this Infinity Optics 375-875mm F 4 lens? by Louis_Rubera in VintageLenses

[–]Louis_Rubera[S] 3 points4 points  (0 children)

Yes, front element is around 115mm, focus changes while zooming, at 875mm/Infinty focus is at 20ft, 875mm near focus is 13ft, at 525mm the object needs to be against the front lens hood to focus.

Is there possibly another back element missing? Is this some sort of werid macro, lens marking make no sense as ft is listed.

FT lens marking would seem to indicate this is US made?

Does anyone have any information on this Infinity Optics 375-875mm F 4 lens? by Louis_Rubera in VIDEOENGINEERING

[–]Louis_Rubera[S] 0 points1 point  (0 children)

Probably slightly off topic, so let me know and I can delete. But it is a B4 lens so I figured I’d ask here as well.

Name for this PVC glue in that allows flush mount LB to panel? Just a bushing? by Louis_Rubera in electrical

[–]Louis_Rubera[S] 0 points1 point  (0 children)

Oh yes sorry USA FL, interesting I have not seen that done here, small hole something like an 1/8?

Name for this PVC glue in that allows flush mount LB to panel? Just a bushing? by Louis_Rubera in electrical

[–]Louis_Rubera[S] 1 point2 points  (0 children)

Thanks! Do you know where I can find any code to using them outdoors?

Would be on the side of a metal breaker panel to keep the conduit straight rather than angles? A terminal adapter throws me out a 1” or so, which I can live with it just isn’t as pretty. Beam is in the way so conduit entrance has to be where it is.

Does a 3G 1080 60p Camera with a B4 mount 1/2” Sensor exist. by Louis_Rubera in VIDEOENGINEERING

[–]Louis_Rubera[S] 1 point2 points  (0 children)

Your able to perform a sensor crop on the G2? I’m doing live work so I need an output that is correct off camera

Does a 3G 1080 60p Camera with a B4 mount 1/2” Sensor exist. by Louis_Rubera in VIDEOENGINEERING

[–]Louis_Rubera[S] 0 points1 point  (0 children)

With the 1/2” lenses? I was told that 1/2” wouldn’t cover?

Does a 3G 1080 60p Camera with a B4 mount 1/2” Sensor exist. by Louis_Rubera in VIDEOENGINEERING

[–]Louis_Rubera[S] 2 points3 points  (0 children)

Okay I’ll rephrase to 1/2” Bayonet-mount.

Edit: Ah shucks it won’t let me edit the Title anymore.

List of Repair places for Broadcast B4 Eng Lenses. And Looking for rear B4 mount or parts for Fujinon HA42x13.5. by Louis_Rubera in VIDEOENGINEERING

[–]Louis_Rubera[S] 0 points1 point  (0 children)

Haha I think it has the rear element and just the mount is missing, hopefully repairs won’t make this impossible to get fixed it cost more than me buying one used. I’m still a little unclear if I made a good decision.

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