Anyone using 35mm adapter with Ex-1 at DVinfo.net

Leonard Levy · January 29th, 2008, 07:50 PM

I tried setting up my Ex-1 last night with both a Letus EX and a Brevis Flip and in both cases had a bad time getting anything close to decent corner focusing. Anybody else try this ? How did it work for you?

Lenny Levy

Steven Thomas · January 29th, 2008, 08:01 PM

Philip Bloom bro.....
Look him up.
http://www.philipbloom.co.uk/Philip_Bloom/Home.html

Leonard Levy · January 29th, 2008, 08:46 PM

tried Philip - no reply yet.

James Huenergardt · January 29th, 2008, 09:39 PM

I know with the Redrock M2, you need about 2" of spacers, at least that what they said.

I haven't tried my Redrock M2 with my EX1, but will soon.

Sami Sanpakkila · January 30th, 2008, 04:36 AM

A quote from Letus Forum:

"Some EX1 users may experience a spherical anomaly from the EX1 lens. For example. on our test EX1, the right side of the screen seems to be darker than the left. If we swing it quickly to the left and return just a bit, it goes away and then reappears. This indicates there is something going on with the hardware of the EX1.

For the focusing issues, we have looked at the EX1 lens and will have a solution to compensate for the problem is in production now.

This is NOT a problem with Letus35 Extreme, it is the problem with the Sony EX1.

In the mean time, please see this image for focusing help.

http://www.letusdirect.com/images/mi...focus-help.jpg
-DeGrey"

I am able to get very good focus with this method, takes a little tweaking though.

Steve Cahill · January 30th, 2008, 04:39 AM

This is how I achieve "Critical Focus" with the EX1 and LetusEX QT movie shows how @
http://web.mac.com/stevecahill/Steve...cal_Focus.html

Sami Sanpakkila · January 30th, 2008, 05:25 AM

Steve thanks for that! I whish I had seen that when I first got the LEX. Would have saved me a lot of time testing and writing questions to Letus :)

Sami

Leonard Levy · January 30th, 2008, 01:00 PM

Thanks Sami and Steve, I'll watch the blog vidoe and see what's possible.

Leonard Levy · January 30th, 2008, 01:14 PM

Well i just watched the video and I guess there's no trick it just depends on what you're shooting and what you're doing with it. At least I know that everyone is having the same issue and that the manufacturers are working on it.

Thanks, Can't wait for a fix though.

By the way, for what its worth, my method of working with any adapter is to carry a 3-4' resolution chart with me on the set and double check the focus whenever i can with the 35mm lens on the rig., I just back & forth beween the 35mm focus and the video cam. Seems very safe and relaible. Of course it wouldn't work if you like Philip out by yourself shooting gorgeous landscapes, but on a set its reliable.

Lenny

Bryan Suthard · January 30th, 2008, 01:26 PM

I have the M2 and have been tweaking to get the perfect balance. I have similar problems with the edges but not light/dark issues so much as clarity. I find it similar to what I have achieved with my XH-A1 and prior FX1. Perfection is tough and the EX1 and adapter are only part of the chain. A lot also has to do with the lenses you use and I wish I had some Zeiss primes. These were focused dead-center so I am going to try the off-center suggestion. Here are a couple of pictures of my focus tests using cheap old nikon primes.

Pics of setup:
http://www.tampahighdef.com/exfocus/fullexrig.jpg
http://www.tampahighdef.com/exfocus/closeup.jpg

Focus tests:
http://www.tampahighdef.com/exfocus/nikon50.jpg
http://www.tampahighdef.com/exfocus/nikon100.jpg

One more test, less zoom, further from the camera.

http://www.tampahighdef.com/exfocus/nikon50mm-0130.jpg

Steve Cahill · January 30th, 2008, 07:49 PM

Just did a audio interview with Phil Bloom over @
http://web.mac.com/stevecahill/Steve...lip_Bloom.html

Also a interview with Hein Le with Letus over @
http://web.mac.com/stevecahill/Steve...s_Company.html

Vince Gaffney · January 30th, 2008, 08:07 PM

did hien say how far out he is with the achromat/diopter for the EX1
vince

Steve Cahill · January 30th, 2008, 08:15 PM

Not in the interview.. My guess real soon. I will post a critical focus test as soon as I get my glass, for all to see. Standby.....

Vince Gaffney · January 30th, 2008, 08:37 PM

good news. eager to see the results.

vince

Phil Bloom · January 31st, 2008, 06:22 PM

don't listen to my interview. It's nonsense.

On my dungeness short i got some cracking edge to edge with the ex1 and letus. Just wish i knew what I did.

I to am waiting for the letus fix. I expect it will be a must buy for anyone with a Brevis too (perhaps the SGPRO?) as it will fix that close up focus issue.

January 29th, 2008, 07:50 PM	#1
Leonard Levy Trustee Join Date: Feb 2006 Location: USA Posts: 1,684	Anyone using 35mm adapter with Ex-1 I tried setting up my Ex-1 last night with both a Letus EX and a Brevis Flip and in both cases had a bad time getting anything close to decent corner focusing. Anybody else try this ? How did it work for you? Lenny Levy

January 29th, 2008, 09:39 PM	#4
James Huenergardt Major Player Join Date: Nov 2005 Location: Chehalis, WA Posts: 513	I know with the Redrock M2, you need about 2" of spacers, at least that what they said. I haven't tried my Redrock M2 with my EX1, but will soon. __________________ Reel Inspirations - www.reelinspirations.com Commercials, Dramas, Image Pieces, Documentaries, Motion Graphics

January 30th, 2008, 04:39 AM	#6
Steve Cahill Major Player Join Date: Dec 2003 Location: Boston, MA Posts: 321	This is how I achieve "Critical Focus" with the EX1 and LetusEX QT movie shows how @ http://web.mac.com/stevecahill/Steve...cal_Focus.html __________________ Regards Steve

January 30th, 2008, 01:26 PM	#10
Bryan Suthard Regular Crew Join Date: Dec 2003 Location: Tampa, FL United States Posts: 135	I have the M2 and have been tweaking to get the perfect balance. I have similar problems with the edges but not light/dark issues so much as clarity. I find it similar to what I have achieved with my XH-A1 and prior FX1. Perfection is tough and the EX1 and adapter are only part of the chain. A lot also has to do with the lenses you use and I wish I had some Zeiss primes. These were focused dead-center so I am going to try the off-center suggestion. Here are a couple of pictures of my focus tests using cheap old nikon primes. Pics of setup: http://www.tampahighdef.com/exfocus/fullexrig.jpg http://www.tampahighdef.com/exfocus/closeup.jpg Focus tests: http://www.tampahighdef.com/exfocus/nikon50.jpg http://www.tampahighdef.com/exfocus/nikon100.jpg One more test, less zoom, further from the camera. http://www.tampahighdef.com/exfocus/nikon50mm-0130.jpg Last edited by Bryan Suthard; January 30th, 2008 at 09:56 PM.

January 30th, 2008, 07:49 PM	#11
Steve Cahill Major Player Join Date: Dec 2003 Location: Boston, MA Posts: 321	Just did a audio interview with Phil Bloom over @ http://web.mac.com/stevecahill/Steve...lip_Bloom.html Also a interview with Hein Le with Letus over @ http://web.mac.com/stevecahill/Steve...s_Company.html __________________ Regards Steve

January 29th, 2008, 08:01 PM	#2
Steven Thomas Trustee Join Date: Sep 2005 Location: Gilbert, AZ Posts: 1,896	Philip Bloom bro..... Look him up. http://www.philipbloom.co.uk/Philip_Bloom/Home.html

January 29th, 2008, 08:46 PM	#3
Leonard Levy Trustee Join Date: Feb 2006 Location: USA Posts: 1,684	tried Philip - no reply yet.

January 30th, 2008, 04:36 AM	#5
Sami Sanpakkila Major Player Join Date: Nov 2007 Location: Finland Posts: 317	A quote from Letus Forum: "Some EX1 users may experience a spherical anomaly from the EX1 lens. For example. on our test EX1, the right side of the screen seems to be darker than the left. If we swing it quickly to the left and return just a bit, it goes away and then reappears. This indicates there is something going on with the hardware of the EX1. For the focusing issues, we have looked at the EX1 lens and will have a solution to compensate for the problem is in production now. This is NOT a problem with Letus35 Extreme, it is the problem with the Sony EX1. In the mean time, please see this image for focusing help. http://www.letusdirect.com/images/mi...focus-help.jpg -DeGrey" I am able to get very good focus with this method, takes a little tweaking though.

January 30th, 2008, 05:25 AM	#7
Sami Sanpakkila Major Player Join Date: Nov 2007 Location: Finland Posts: 317	Steve thanks for that! I whish I had seen that when I first got the LEX. Would have saved me a lot of time testing and writing questions to Letus :) Sami

January 30th, 2008, 01:00 PM	#8
Leonard Levy Trustee Join Date: Feb 2006 Location: USA Posts: 1,684	Thanks Sami and Steve, I'll watch the blog vidoe and see what's possible.

January 30th, 2008, 01:14 PM	#9
Leonard Levy Trustee Join Date: Feb 2006 Location: USA Posts: 1,684	Well i just watched the video and I guess there's no trick it just depends on what you're shooting and what you're doing with it. At least I know that everyone is having the same issue and that the manufacturers are working on it. Thanks, Can't wait for a fix though. By the way, for what its worth, my method of working with any adapter is to carry a 3-4' resolution chart with me on the set and double check the focus whenever i can with the 35mm lens on the rig., I just back & forth beween the 35mm focus and the video cam. Seems very safe and relaible. Of course it wouldn't work if you like Philip out by yourself shooting gorgeous landscapes, but on a set its reliable. Lenny

January 30th, 2008, 08:07 PM	#12
Vince Gaffney Regular Crew Join Date: Dec 2005 Location: Chicago, IL Posts: 146	did hien say how far out he is with the achromat/diopter for the EX1 vince

January 30th, 2008, 08:15 PM	#13
Steve Cahill Major Player Join Date: Dec 2003 Location: Boston, MA Posts: 321	Not in the interview.. My guess real soon. I will post a critical focus test as soon as I get my glass, for all to see. Standby..... __________________ Regards Steve

January 30th, 2008, 08:37 PM	#14
Vince Gaffney Regular Crew Join Date: Dec 2005 Location: Chicago, IL Posts: 146	good news. eager to see the results. vince

January 31st, 2008, 06:22 PM	#15
Phil Bloom Trustee Join Date: Aug 2006 Location: London UK Posts: 1,939	don't listen to my interview. It's nonsense. On my dungeness short i got some cracking edge to edge with the ex1 and letus. Just wish i knew what I did. I to am waiting for the letus fix. I expect it will be a must buy for anyone with a Brevis too (perhaps the SGPRO?) as it will fix that close up focus issue. __________________ Philip Bloom Cinematographer, Director, Filmmaker www.philipbloom.net