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Old January 29th, 2007, 10:49 AM   #16
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I have just realised another modification they could make to the HD2, an low light mode that automatically switches to 1280*360 or 640*720, 640*480, and 320*240 binning at 9mb/s for better low light performance.

One of the things that 9mb/s can not handle is too much noise (and motion to well) I think it is preferable, most of the time, to have 640*480 or 320*480, then macro blocking. If they can set the switch in when noise from gain adversely effects encoding. They could also use something like that for areas of high speed movement, as long as the objects has clean lines it should not look very noticeable.
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Old January 29th, 2007, 12:05 PM   #17
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Dennis, that picture still makes me laugh ;)
Thanks. It's completely fake, done in Photoshop. :)
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Old January 29th, 2007, 02:45 PM   #18
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Quote:
Originally Posted by Robert Batta
hi all,

i tested the HD1+M2+Takumar 50mm F1.4 lens ...not bad in good lighting situations...
this sample videos little noisy (indoor) but like a film grain :)

no cc or any post production...
the SD conversion very good !

Are you using the HD or SD package from Redrock?
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Old January 31st, 2007, 09:24 AM   #19
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Quote:
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Are you using the HD or SD package from Redrock?
i use the sd pack with 52mm achromat lens
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Old January 31st, 2007, 11:12 AM   #20
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Sanyo HD1+Redrock M2 samples

two uncompressed mp4 video

http://rapidshare.com/files/14273242/Sany0565___.mp4
http://rapidshare.com/files/14272038/Sany0562___.mp4
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Old February 3rd, 2007, 07:10 AM   #21
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Robert, how much light loss do you estimate you are getting?

Is this an GG like focus screen adaptor? Is it possible to remove the focusing screen in this adaptor and shoot some low light using the condenser (adjusted to whatever makes it focus) as an test to see what happens (not expecting much)?

The question ask before about the speed of the CCD in this camera, slow to very slow without lots of noise. The announcement of the new HD2 camera indicates an big improvement, I forget how much but it was an number of times, I posted a link in the HD2 thread.
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Old February 5th, 2007, 11:34 AM   #22
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Originally Posted by Wayne Morellini
Robert, how much light loss do you estimate you are getting?

Is this an GG like focus screen adaptor? Is it possible to remove the focusing screen in this adaptor and shoot some low light using the condenser (adjusted to whatever makes it focus) as an test to see what happens (not expecting much)?

The question ask before about the speed of the CCD in this camera, slow to very slow without lots of noise. The announcement of the new HD2 camera indicates an big improvement, I forget how much but it was an number of times, I posted a link in the HD2 thread.
Wayne,

The loss of light is about 1/2 to 1 stop.
and yes this GG (rotation) screen adapter

one more uncompressed (mp4) test video with Prost Tele 135mm f2.8 lens at f2.8
Sanyo HD1 setting: f3.5 , shutter 1/100, iso 50, wb sunlight
no cc or postproduction

http://rapidshare.com/files/15036342/Sany0651_walk.mp4

but sorry i dont no remove the M2 cinescreen (GG)...
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Old February 7th, 2007, 09:42 AM   #23
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:)
......
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Old February 7th, 2007, 12:12 PM   #24
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Out of warranty Black screen HD1 adaptor suggestion.

I picked up an Canon 8 video camera with automatic zoom F1.4 lens system for $5. It gave me a thought, such an lens could probably be made to work on an black screen lens HD1 (preferably out of warranty and unable to be repaired).

Canon Auto Zoom 814 Electronic (has extra rubber hood):
http://www.canon.com/camera-museum/c...2_auto814.html
http://www.canon.com/camera-museum/c...auto814_s.html

The target size of 8 is close to 1/2.5. An little is lost around the edges in still mode, 16:9 720p shooting should fit, and still might still fit in the circle of the lens image. Super 8 would be better.

http://en.wikipedia.org/wiki/Digital_photography
http://machinevision.navitar.com/pag....cfm?nav4=true

A very nice site I found for general photography information.
http://www.photozone.de/3Technology/digital_1.htm

The lens electronics could possibly be adapted to respond to the HD1.

The lens looks cool enough, Canon upmarket styling.

But then again security camera, and digital still camera lens, could also be used.

If somebody had a defunct Sanyo in Australia and would be interested in this, I could send the camera if they paid postage (the lens if I can get it off).
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Old February 7th, 2007, 12:42 PM   #25
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Back on track:

About the purely optical adaptor. The problem with converting an 35mm lens to an 1/2.5 inch target is that you increase the angle of light convergence and speed. Past an certain point, it will mar the image if an microlens array is present. If there is no microlens or other obstruction, as you increase speed, eventually the angle of convergence becomes so extreme that light bounces off the surface of the sensor chip.

Something in the 3/4 format website that I saw years ago, occurred to me. It is something I had planned on doing too.

They seem to be indicating that the lens system is designed to reduce/straighten out the angle of light hitting the sensor (immediate thought, are these lens very slow?). So that the lens has an system to make the light hit the sensor more direct on. If this is what is meant, such a system would allow the native DOF of the 35mm lens to be transfered through to the smaller sensor without excessive angles of convergence, with many sub f1.0 stops.

Does this sound credible (had three hours sleep the previous night)?
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