Sub-Forum for Redrock M2?

Phil Bloom · November 23rd, 2006, 06:53 PM

this is only if you change lens mounts, not different focal length lenses of the same type surely?

Wayne Kinney · November 23rd, 2006, 07:06 PM

No, just if changing lens mounts

Dennis Wood · December 10th, 2006, 09:17 PM

It's a good point Wayne. The more variables designed out, the easier the unit is to use, and the less chance with errors in calibration. We've pretty much taken the same route so that any lens mount changes are now pretty much a 3 minute affair. We've still left some adjustment if required for tweaking, however user errors should be pretty much minimized. It's taken a while to get there :-)

Tony Relph · December 11th, 2006, 10:03 AM

This is definately the route for all adapters to go in relation to lens mounts. The DiGi35 has taken this route. For instance the focusing screen is 10mm in from the front of the adapter, The DiGi35 PL mount carries the remaining 41.98mm therefore once mounted to the DiGi35 the total flange focal distance of 51.98mm (PL flange-focal distance) is acheived without moving the screen. This is the same on all the DiGi mounts and this is the same as the SG Pro, I think.

Hope that explains it easily enough for those wondering.

Matthew,

I think a sliding lens mount proposed for the M2 above still doesnt solve the problem, it still involves the movement and fixing of components ensuring the correct FFD, The DiGi35 and SG Pro approach is definately the easiest route for the end user and provides a more accurate FFD.

Thanks,

Chris Barcellos · December 11th, 2006, 10:29 AM

I've just been grappling with this FFD issue on my own self built adapter, based roughly on the Micro35 Redrock plans. With my Pentax 50 mm, I was focusing through infinity, so at close distance I was losing the ability to focus in areas that would be in focus. Rather than focus down to 1.5 feet, I could only get it down to about 4.5. In most situations that didn't appear to be a major issue. It really created difficulties though, with a Takumar 28 mm to 80mm wide angle I had. I could not get any focus at reasonably close distances, until I started playing with these adjustments. So much to learn about this stuff yet....

Vasi Hasan · December 22nd, 2006, 08:52 PM

Quote:

Originally Posted by Wayne Kinney

Vasi,

I am based in Brighton, East Sussex, an hour from central London. We could arrange a demo of the SGpro if you wish.

Wayne,

Been a while. I'm still waiting to see the demo you promised. Any plans of coming to London anytime soon?

Any idea where I can rent one for a 4 day shoot here in London?

Vasi.

Wayne Kinney · December 23rd, 2006, 03:45 AM

Vasi,

Will have units ready to view in 2 weeks if you would like to come and view. We do not hire units, though.

Zulkifli Yusof · December 23rd, 2006, 05:27 AM

Hey Wayne!

I havent checked out your website for awhile but I just had a look at it and it says that there are a few issues with the PL/Oct-19 mounts before release.

What are these issues exactly? Has it got to do with the coverage of 35mm cine lenses and the groundglass which were better suited for SLR lenses?

If this was the case, I would assume that users would need to zoom in more into the groundglass?

Vasi Hasan · December 23rd, 2006, 01:39 PM

Quote:

Originally Posted by Wayne Kinney

Vasi,

Will have units ready to view in 2 weeks if you would like to come and view. We do not hire units, though.

Hi Wayne;

Where can I come and view the adapter?
You come to London often?

Jason Strongfield · December 28th, 2006, 08:18 PM

a lot of people complained about the M2 light loss especially when coupled with the HVX200.

Wayne Kinney · December 29th, 2006, 06:16 AM

Quote:

Originally Posted by Vasi Hasan

Hi Wayne;

Where can I come and view the adapter?
You come to London often?

Hi,

We are based in Brighton, East Sussex. I have sent you an email.

Brian Orser · January 1st, 2007, 04:12 PM

Quote:

Originally Posted by Phil Bloom

Wouldn't it be great if somebody with all the main adaptors. SGpro, M2, Brevis and Letus (I know there are others, but these are the ones I am more familiar with!) could shoot the same footage on the same camera so we could compare them all! It's so tricky chosing the right one as so much footage uploaded has been treated in some way (including some of my own!)

Having only had real hands on experience with one (Letus flip) I would love to try more. I am awaiting with excitiment Dennis Wood's Brevis with flip attachment!

By the way, I've been lurking for a while, but just registered to point this out. So, ya, I'm new. :) I'm just getting into all of this adapter confusion as well. Funny how whenever I want a nice easy answer (ie which one's best?) there is no such thing to be found.

Wayne Kinney · January 1st, 2007, 05:06 PM

http://www.dvinfo.net/conf/showthread.php?t=81526

Brian Orser · January 1st, 2007, 05:30 PM

There you go! :) That's what comes of being a newcomer trying to contribute. Oh well. :|

Wayne Kinney · January 1st, 2007, 06:15 PM

Welcome to the board ;)

November 23rd, 2006, 06:53 PM	#31
Phil Bloom Trustee Join Date: Aug 2006 Location: London UK Posts: 1,939	this is only if you change lens mounts, not different focal length lenses of the same type surely? __________________ Philip Bloom Cinematographer, Director, Filmmaker www.philipbloom.net

November 23rd, 2006, 07:06 PM	#32
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	No, just if changing lens mounts __________________ Thanks, Wayne.

December 11th, 2006, 10:03 AM	#34
Tony Relph Regular Crew Join Date: Jun 2006 Location: Canary Wharf, London E14 Posts: 166	This is definately the route for all adapters to go in relation to lens mounts. The DiGi35 has taken this route. For instance the focusing screen is 10mm in from the front of the adapter, The DiGi35 PL mount carries the remaining 41.98mm therefore once mounted to the DiGi35 the total flange focal distance of 51.98mm (PL flange-focal distance) is acheived without moving the screen. This is the same on all the DiGi mounts and this is the same as the SG Pro, I think. Hope that explains it easily enough for those wondering. Matthew, I think a sliding lens mount proposed for the M2 above still doesnt solve the problem, it still involves the movement and fixing of components ensuring the correct FFD, The DiGi35 and SG Pro approach is definately the easiest route for the end user and provides a more accurate FFD. Thanks, __________________ Tony Relph. anthonyjohnrelph@hotmail.com

December 11th, 2006, 10:29 AM	#35
Chris Barcellos Inner Circle Join Date: Nov 2005 Location: Elk Grove CA Posts: 6,838	I've just been grappling with this FFD issue on my own self built adapter, based roughly on the Micro35 Redrock plans. With my Pentax 50 mm, I was focusing through infinity, so at close distance I was losing the ability to focus in areas that would be in focus. Rather than focus down to 1.5 feet, I could only get it down to about 4.5. In most situations that didn't appear to be a major issue. It really created difficulties though, with a Takumar 28 mm to 80mm wide angle I had. I could not get any focus at reasonably close distances, until I started playing with these adjustments. So much to learn about this stuff yet.... __________________ Chris J. Barcellos

December 23rd, 2006, 03:45 AM	#37
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Vasi, Will have units ready to view in 2 weeks if you would like to come and view. We do not hire units, though. __________________ Thanks, Wayne.

December 10th, 2006, 09:17 PM	#33
Dennis Wood Major Player Join Date: Mar 2005 Location: Ontario, Canada Posts: 916	It's a good point Wayne. The more variables designed out, the easier the unit is to use, and the less chance with errors in calibration. We've pretty much taken the same route so that any lens mount changes are now pretty much a 3 minute affair. We've still left some adjustment if required for tweaking, however user errors should be pretty much minimized. It's taken a while to get there :-)

December 23rd, 2006, 05:27 AM	#38
Zulkifli Yusof Regular Crew Join Date: Apr 2006 Location: Singapore Posts: 86	Hey Wayne! I havent checked out your website for awhile but I just had a look at it and it says that there are a few issues with the PL/Oct-19 mounts before release. What are these issues exactly? Has it got to do with the coverage of 35mm cine lenses and the groundglass which were better suited for SLR lenses? If this was the case, I would assume that users would need to zoom in more into the groundglass?

December 28th, 2006, 08:18 PM	#40
Jason Strongfield Regular Crew Join Date: May 2006 Location: USA Posts: 195	a lot of people complained about the M2 light loss especially when coupled with the HVX200.

January 1st, 2007, 05:06 PM	#43
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	http://www.dvinfo.net/conf/showthread.php?t=81526 __________________ Thanks, Wayne.

January 1st, 2007, 05:30 PM	#44
Brian Orser Regular Crew Join Date: Jan 2007 Location: Santa Cruz, CA Posts: 87	There you go! :) That's what comes of being a newcomer trying to contribute. Oh well. :\|

January 1st, 2007, 06:15 PM	#45
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Welcome to the board ;) __________________ Thanks, Wayne.