SG35 GG replacement at DVinfo.net

Josh Hoffman · April 15th, 2006, 10:42 AM

Has anyone had to replace their SG35's ground glass?

What did you use?
And, is the groundglass that comes with the M2 red rock DIY instructions any good?

Thanks.

Francois Poitras · April 15th, 2006, 11:23 AM

The GG that came with my Redrock Micro35 DIY kit was their "M1" GG, apparently the first one they made. It worked OK, but it had about 2 F/stops light loss. I must also say the disc was slightly warped and that its centre hole was slightly off centre.

David Delaney · April 15th, 2006, 12:09 PM

I think he is referring to Wayne SG35. It is made from custom made from Glass, from what I recall. You would have to ask him.

Francois Poitras · April 15th, 2006, 12:15 PM

Well, Josh’s last question was rather clear and specific...

I should add that the Redrock GG is made of plastic (I suspect optical acrylic, but I’m not 100% sure).

BTW, Josh, you can also have some discs made to your specs. I did have some optical acrylic discs done from a company called techplast dot com. It was not that expensive.

Quyen Le · April 15th, 2006, 12:22 PM

SG35 uses plastic GG since the breakage of real glass is a big problem. I think you should contact Wayne for replacement GG, thanks.

Quyen

Wayne Kinney · April 15th, 2006, 03:38 PM

Josh,
Can I ask why you would want to change the SG's ground glass?

Josh Hoffman · April 15th, 2006, 05:59 PM

I wouldn't want to if it wasn't broken.

Wayne Kinney · April 16th, 2006, 03:38 AM

Josh,
OK, so it was just breakage issues you were worrying about? As Quyen says, its no longer real glass so no breakage problems.

Wayne Kinney · April 16th, 2006, 04:32 AM

Josh,
Do you own an SG35, not bought from myself? Or was it just a question out of curiosity?

David Delaney · April 16th, 2006, 07:37 AM

Wayne,

I didn't know you switched from Glass to something else. I thought that is why your footage looked so good because you were using glass...

Wayne Kinney · April 16th, 2006, 09:24 AM

David,
Made the switch from glass some time ago. It was not so much the glass that made the nice images, but rather because the glass was 'treated' The new material has the same properties as the 'treated' glass so same great colours and contrast with low light loss, with a better light loss to diffusion ratio. The spinning disk is only 0.5mm thick

Josh Hoffman · April 16th, 2006, 10:43 AM

I own one, not bought from you, and the GG was broken in shipping.

Wayne Kinney · April 16th, 2006, 10:56 AM

OK Josh,
this must be a very old model. I am willing to upgrade your unit for you to the new GG and mechanism. Just let me know.

Josh Hoffman · April 18th, 2006, 05:40 PM

Okay, I e-mailed you with questions about upgrading.

Wayne Kinney · April 19th, 2006, 02:44 AM

Josh,
I have not received your email, emailing via this forum does not work sometimes. If you email me directly to waynekinney@hotmail.com

April 15th, 2006, 10:42 AM	#1
Josh Hoffman New Boot Join Date: Mar 2005 Location: Athens, Oh Posts: 6	SG35 GG replacement Has anyone had to replace their SG35's ground glass? What did you use? And, is the groundglass that comes with the M2 red rock DIY instructions any good? Thanks.

April 15th, 2006, 11:23 AM	#2
Francois Poitras Regular Crew Join Date: Nov 2004 Location: Québec (Canada) Posts: 133	The GG that came with my Redrock Micro35 DIY kit was their "M1" GG, apparently the first one they made. It worked OK, but it had about 2 F/stops light loss. I must also say the disc was slightly warped and that its centre hole was slightly off centre. __________________ François

April 15th, 2006, 12:15 PM	#4
Francois Poitras Regular Crew Join Date: Nov 2004 Location: Québec (Canada) Posts: 133	Well, Josh’s last question was rather clear and specific... I should add that the Redrock GG is made of plastic (I suspect optical acrylic, but I’m not 100% sure). BTW, Josh, you can also have some discs made to your specs. I did have some optical acrylic discs done from a company called techplast dot com. It was not that expensive. __________________ François

April 15th, 2006, 12:22 PM	#5
Quyen Le Major Player Join Date: Jun 2005 Posts: 356	SG35 uses plastic GG since the breakage of real glass is a big problem. I think you should contact Wayne for replacement GG, thanks. Quyen __________________ Affordable Adapter http://www.adapterplace.com

April 15th, 2006, 03:38 PM	#6
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Josh, Can I ask why you would want to change the SG's ground glass? __________________ Thanks, Wayne.

April 15th, 2006, 12:09 PM	#3
David Delaney Trustee Join Date: Feb 2006 Location: Niagara Ontario Canada Posts: 1,121	I think he is referring to Wayne SG35. It is made from custom made from Glass, from what I recall. You would have to ask him.

April 15th, 2006, 05:59 PM	#7
Josh Hoffman New Boot Join Date: Mar 2005 Location: Athens, Oh Posts: 6	I wouldn't want to if it wasn't broken.

April 16th, 2006, 03:38 AM	#8
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Josh, OK, so it was just breakage issues you were worrying about? As Quyen says, its no longer real glass so no breakage problems. __________________ Thanks, Wayne.

April 16th, 2006, 04:32 AM	#9
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Josh, Do you own an SG35, not bought from myself? Or was it just a question out of curiosity? __________________ Thanks, Wayne.

April 16th, 2006, 07:37 AM	#10
David Delaney Trustee Join Date: Feb 2006 Location: Niagara Ontario Canada Posts: 1,121	Wayne, I didn't know you switched from Glass to something else. I thought that is why your footage looked so good because you were using glass...

April 16th, 2006, 09:24 AM	#11
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	David, Made the switch from glass some time ago. It was not so much the glass that made the nice images, but rather because the glass was 'treated' The new material has the same properties as the 'treated' glass so same great colours and contrast with low light loss, with a better light loss to diffusion ratio. The spinning disk is only 0.5mm thick __________________ Thanks, Wayne.

April 16th, 2006, 10:43 AM	#12
Josh Hoffman New Boot Join Date: Mar 2005 Location: Athens, Oh Posts: 6	I own one, not bought from you, and the GG was broken in shipping.

April 16th, 2006, 10:56 AM	#13
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	OK Josh, this must be a very old model. I am willing to upgrade your unit for you to the new GG and mechanism. Just let me know. __________________ Thanks, Wayne.

April 18th, 2006, 05:40 PM	#14
Josh Hoffman New Boot Join Date: Mar 2005 Location: Athens, Oh Posts: 6	Okay, I e-mailed you with questions about upgrading.

April 19th, 2006, 02:44 AM	#15
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Josh, I have not received your email, emailing via this forum does not work sometimes. If you email me directly to waynekinney@hotmail.com __________________ Thanks, Wayne.