[Konvas] OCT-19 Canon DSLR

Wed Sep 9 11:38:31 CDT 2009

What a pity. I just tried it roughly with an old rebel X body i have and only 75mm, 100mm and 150mm seems to fit. 50mm and down doesn't see to fit. 

Stone, do you remember if you had any luck with the wider focal lengths?

If it doesn't fit this is a real pity. I would love to use my Lomo set as my follow focus and other gear would fit them, not to mention they are real cine lenses and don't breath like still lenses.

--- On Wed, 9/9/09, Adam P.Jones <adamcjx25 at yahoo.com> wrote:

From: Adam P.Jones <adamcjx25 at yahoo.com>
Subject: Re: [Konvas] OCT-19 Canon DSLR
To: "Konvas Discussion List" <cinema at konvas.org>
Date: Wednesday, September 9, 2009, 10:06 AM

Very interesting. 
Now that Canon is releasing the 7D, which has roughly the same size sensor as 35mm motion picture film, the Lomos may cover the whole sensor. The 5D was a full frame sensor and so the Lomos would not cover it. But the 7D has a 1.6x crop factor which is basically the same as motion picture film. The question now is if the lenses would physically fit. The adapter would have to be only 17mm thick, which is not a lot. EF mount is 44mm and OCT-19 is 61mm. 
I know there's a Panavision adapter to use Panavision lens with the D but the widest lens that will fit is a 35mm.

I would have to measure my Lomos to see which ones stick farther back then 17mm. But for HD capture having the Lomos would be killer. Surely beats any Letus 35mm adapter set up with a video camera.

--- On Sun, 2/22/09, H. W. Stone <colcam at aim.com> wrote:

From: H. W. Stone <colcam at aim.com>
Subject: Re: [Konvas] OCT-19 Canon DSLR
To: cinema at konvas.org
Date: Sundamm.y, February 22, 2009, 10:59 AM

I made ONE oct19 to Canon 10D mount adapter.

It was made from a junked lens, taken apart to create a back flange and forward cup, the lens mount taken off of a dropped and totaled 2m for the front, and Bondo Plus to create the body between the two after measurements.  It worked with the anamorphics, the mirror clearing, and with the three or four sphericals I tried, and I had someone whose name I will not mention here tell me he could duplicate them in Eastern Europe if I would loan him my one kluged mount.

I sent it, his email got changed, and while the package was delivered, according to the tracking, when I got in touch with him he said he never got it, then did not reply any further.

I have been working on the system again, and found from the sensor size and features that the newer Sony DSLR cameras are a better match-- mostly because of the fact you can lock the mirror UP and use the screen on back to compose and shoot-- which means mirror clearance no longer matters.  

Interestingly the Canon DSLR people don't really want to talk to me-- and it infuriates the DV guys, who apparently cannot even get them to respond within the company, and it appears the Sony DSLR people were chosen from those who took a basic intelligence test and did not pass it.  No one even wanted to talk to me about which models had what sensors at what size and the mirror lock up features--  I had to measure some to find out.  The Nikon people were downright hostile--  their push on the DSLR bodies is to sell their lenses, and as soon as I explained what I wanted to do they refused to even answer me any further.  

It should (make that SHOULD in all caps and boldface) be fairly simple to make a mount adapter for the new "HD out of a DSLR" bodies by either Nikon or Canon since the mirrors lock up for the HD use-- if you can find the area of the sensor used and figure out how to make sure the mirror is KEPT up even if the battery dies. 

That just happens to be in opposition to the planned sales pattern.

-----Original Message-----
From: Bruce McNaughton <bruce at arandafilm.com.au>
To: Konvas Discussion List <cinema at konvas.org>
Sent: Sun, 22 Feb 2009 2:09 am
Subject: Re: [Konvas] OCT-19 Canon DSLR

I am not as familiar with OCT18 as OCT19.  I know that the lens barrels are not as wide, which is helpful but the protruding of the lenses behind the mount seems to be a close call.  I would have to have the equipment in front of me to advise further. 

Regards
Bruce
The aranda group
Melbourne
http://www.arandafilm.com.au

On 22 Feb 2009, at 17:58, Brad Leong wrote:

What about a OCT-18 DSLR mount the little lomo oct-18s that I have don't seem to project that far back from their mounting position.

The oct-18 with a falnge focal of 57mm will project out 13mm from the canon body.  The oct-18 lenses that I have seem to sit 20mm or less back into the mount... so it's tight but maybe they will clear the mirror????  Thoughts????

Brad Leong
paloaltothemovie.com

From: Bruce McNaughton <bruce at arandafilm.com.au>
To: Konvas Discussion List <cinema at konvas.org>
Sent: Friday, February 20, 2009 11:47:46 PM
Subject: Re: [Konvas] OCT-19 Canon DSLR

Shouldn't be difficult.  The geometry is right as the OCT mount will stand some 20MM ( if memory serves) out from the Canon mount.  The restricting factor is the size of the(LOMO) lens that you wish to use.  If the lens seats deeply into an OCT mount it may interfere with the canon end of the special adaptor. Generally long lenses are OK, short ones could give trouble. 

Regards
Bruce
The aranda group
Melbourne
http://www.arandafilm.com.au

On 21 Feb 2009, at 14:32, Brad Leong wrote:

Has anyone made an OCT-19 mount for Canon still cameras specifically the Digital Rebel and 5D?

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