Redrock, Brevis, SGPro Shootout

Djee Smit · February 23rd, 2007, 04:22 AM

Great test, thanks foir doing this, have some questions though;

What do you mean with the M2's edge to edge issue?

How do you read/ can you use such a resolution chart for setting up your adapter?

Ian Lim · February 23rd, 2007, 08:09 PM

Farishad, you're from Jakarta? Me either=)

Farishad Latjuba · February 24th, 2007, 01:30 AM

Quote:

Originally Posted by Ian Lim

Farishad, you're from Jakarta? Me either=)

Yup, I read your posts. Did you get your adapter yet? I'm thinking of getting either SGPro or Brevis...it's for an indie feature length that I have plan to shoot this June, pending for the rainy season now...:)

Ian Lim · February 24th, 2007, 08:46 PM

Quote:

Originally Posted by Farishad Latjuba

Yup, I read your posts. Did you get your adapter yet? I'm thinking of getting either SGPro or Brevis...it's for an indie feature length that I have plan to shoot this June, pending for the rainy season now...:)

No, I haven't get the Brevis yet=( You may pmail me (it's: iansalim@yahoo.com) for an enchanting discussion about adapters=) Rainy day is a mess, just make sure you don't do indie feature about FLOOD =)

Ben Winter · March 25th, 2007, 04:31 PM

As promised, a quick test of the Brevis and Low contrast + ND filter:

This is with Low contrast filter power 5, and a .9 ND Filter
Brevis + FX1, Canon 55mm f1.2 at f5.6:

http://www.frozenphoenixproductions.com/tests/test1.mov

Some may say "but wait! That filter just makes things look washed out." It provides more detail in the shadows and I like it because it provides an image much more keen to color correcting as well as evens out the image for better latitude.

Joey Taylor · March 25th, 2007, 05:02 PM

Ben, the bokeh of that footage doesn't look very good. Is it just me?

Ben Winter · March 25th, 2007, 05:10 PM

Quote:

Originally Posted by Joey Taylor

Ben, the bokeh of that footage doesn't look very good. Is it just me?

I hope so :) I spent an extra $100 for the CF3 just to get that bokeh looking right. Watch the specular highlights on the car; you get that perfect, well-shaped disc; not the 'desired' (whatever that means) "neutral" bokeh, but the hard-edged bokeh. This is what you most commonly see in film productions, and I'm going for film emulation, so...

Bob Hart · March 26th, 2007, 12:44 AM

Farishad.

Les Bosher's adaptor is for putting another lens directly on the video-camera.

( Video-camera >> Les Bosher adaptor >> SLR lens >> Subject. )

It is a metal ring with video-camera mount on the rear end and new lens mount on the front end. Les Bosher's adaptor is not a groundglass based relay adaptor.

Les Bosher's adaptor could be used to fit a SLR still camera lens to the video-camera. On front of this lens can be fitted a good close-up lens.

These all could then become a relay lens for a groundglass based relay adaptor.

( video-camera >> Les Bosher adaptor >> SLR lens >> Close-up lens >> groundglass based image relay adaptor >> SLR Lens >> Subject. )

This is nearly the way Quyen Le does it for the Letus35 except he removes the Minolta mount from the Minolta 50mm still-camera lenses he uses.

He then puts a new specially made JVC HD100 or Canon XL mount on back of the Minolta lens. He also uses a biconvex lens between the close-up lens and the groundglass.

Chad Terpstra · March 26th, 2007, 07:20 AM

Ben, I like it with the contrast filter. I've used the FX1 and it loves to clip the highlights and drown the blacks so I think that was a good investment. Which brand did you end up getting again? Thanks.

Ben Winter · March 26th, 2007, 07:23 AM

Quote:

Originally Posted by Chad Terpstra

Ben, I like it with the contrast filter. I've used the FX1 and it loves to clip the highlights and drown the blacks so I think that was a good investment. Which brand did you end up getting again? Thanks.

This was the Low Contrast #5 filter by Tiffen.
http://www.bhphotovideo.com/bnh/cont...goryNavigation

Ken Willinger · March 26th, 2007, 06:54 PM

I like how the filter looks, but I think I see grain from the Ground Glass. Are you seeing that? You might have to turn up the oscillation some on the Brevis.

Ben Winter · March 26th, 2007, 08:37 PM

Quote:

Originally Posted by Ken Willinger

I like how the filter looks, but I think I see grain from the Ground Glass. Are you seeing that? You might have to turn up the oscillation some on the Brevis.

Ken, thanks for reminding me. Since I started experimenting with the CF3 and tighter apertures I have been meaning to fix that.

Ing Poh Hii · March 27th, 2007, 06:06 AM

Thank you very much Ben for your test footage and it looks very good, much lower contrast and it proves to me that a lot of careful work is required when using adapter. I find the edge to edge isn't sharp, more like looking at the TV box through a thin layer of glass, but the center of the image look beautiful.

I understand that both Brevis & SGPro are still improving, I will hold my decision until June (the time I pack-up and go back home to continue video business ;p).

thanks again :).

Ben Winter · March 27th, 2007, 09:53 AM

Quote:

Originally Posted by Ing Poh Hii

I find the edge to edge isn't sharp, more like looking at the TV box through a thin layer of glass, but the center of the image look beautiful.

I have a sneaking suspicion this is because of the RR achromat, which I am supposed to be getting replaced with the Cinevate achromat. It has other problems as well such as chroma aberration which is apparent in the test video.

Chad Terpstra · March 27th, 2007, 12:09 PM

Ing, there's much better footage out there from the Brevis. I can get edge-to-edge sharp no problem with my HD100. But on the HVX not so much (not at anything below F4 on the camera lens). Best to ask Dennis about your concerns with your specific camera.

February 23rd, 2007, 04:22 AM	#256
Djee Smit Regular Crew Join Date: May 2005 Location: Breda, Netherlands Posts: 141	Great test, thanks foir doing this, have some questions though; What do you mean with the M2's edge to edge issue? How do you read/ can you use such a resolution chart for setting up your adapter? __________________ www.wanah.nl

March 25th, 2007, 04:31 PM	#260
Ben Winter Trustee Join Date: Jun 2005 Location: Hollywood, CA Posts: 1,675 Images: 1	As promised, a quick test of the Brevis and Low contrast + ND filter: This is with Low contrast filter power 5, and a .9 ND Filter Brevis + FX1, Canon 55mm f1.2 at f5.6: http://www.frozenphoenixproductions.com/tests/test1.mov Some may say "but wait! That filter just makes things look washed out." It provides more detail in the shadows and I like it because it provides an image much more keen to color correcting as well as evens out the image for better latitude. __________________ BenWinter.com

March 26th, 2007, 12:44 AM	#263
Bob Hart Inner Circle Join Date: Dec 2003 Location: PERTH. W.A. AUSTRALIA. Posts: 4,476	Farishad. Les Bosher's adaptor is for putting another lens directly on the video-camera. ( Video-camera >> Les Bosher adaptor >> SLR lens >> Subject. ) It is a metal ring with video-camera mount on the rear end and new lens mount on the front end. Les Bosher's adaptor is not a groundglass based relay adaptor. Les Bosher's adaptor could be used to fit a SLR still camera lens to the video-camera. On front of this lens can be fitted a good close-up lens. These all could then become a relay lens for a groundglass based relay adaptor. ( video-camera >> Les Bosher adaptor >> SLR lens >> Close-up lens >> groundglass based image relay adaptor >> SLR Lens >> Subject. ) This is nearly the way Quyen Le does it for the Letus35 except he removes the Minolta mount from the Minolta 50mm still-camera lenses he uses. He then puts a new specially made JVC HD100 or Canon XL mount on back of the Minolta lens. He also uses a biconvex lens between the close-up lens and the groundglass. Last edited by Bob Hart; March 26th, 2007 at 12:46 AM. Reason: correction

February 23rd, 2007, 08:09 PM	#257
Ian Lim Regular Crew Join Date: Jun 2005 Posts: 178	Farishad, you're from Jakarta? Me either=)

March 25th, 2007, 05:02 PM	#261
Joey Taylor Regular Crew Join Date: Jul 2006 Location: Yorba Linda, CA Posts: 80	Ben, the bokeh of that footage doesn't look very good. Is it just me?

March 26th, 2007, 07:20 AM	#264
Chad Terpstra Major Player Join Date: Jun 2005 Location: Grand Rapids, MI Posts: 320	Ben, I like it with the contrast filter. I've used the FX1 and it loves to clip the highlights and drown the blacks so I think that was a good investment. Which brand did you end up getting again? Thanks.

March 26th, 2007, 06:54 PM	#266
Ken Willinger Regular Crew Join Date: Jun 2005 Location: Lexington, MA Posts: 89	I like how the filter looks, but I think I see grain from the Ground Glass. Are you seeing that? You might have to turn up the oscillation some on the Brevis.

March 27th, 2007, 06:06 AM	#268
Ing Poh Hii Regular Crew Join Date: Nov 2006 Location: Kuching, Malaysia Posts: 104	Thank you very much Ben for your test footage and it looks very good, much lower contrast and it proves to me that a lot of careful work is required when using adapter. I find the edge to edge isn't sharp, more like looking at the TV box through a thin layer of glass, but the center of the image look beautiful. I understand that both Brevis & SGPro are still improving, I will hold my decision until June (the time I pack-up and go back home to continue video business ;p). thanks again :).

March 27th, 2007, 12:09 PM	#270
Chad Terpstra Major Player Join Date: Jun 2005 Location: Grand Rapids, MI Posts: 320	Ing, there's much better footage out there from the Brevis. I can get edge-to-edge sharp no problem with my HD100. But on the HVX not so much (not at anything below F4 on the camera lens). Best to ask Dennis about your concerns with your specific camera.