Strange "red" pixel...

vincent_price

vincent_price

Well-known member
I've noticed a strange red pixel in one of the clips from the Silicon website... :badputer:

Here's the link to the WMV: http://siliconimaging.com/DigitalCinema/Gallery/Son_Shot_2.wmv
Length: 0:30
Original File: 1080/24P
Windows Media 9 HD 1080/24P (38MB)

senzatitolo28tr.jpg
 
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More DISTURBINGLY:
I've noticed a strange red beard in one of the clips from the Silicon website...

redB.jpg


:Drogar-BigGrin(DBG)
 
LOL,
as for the red "pixel" (more a "pink blob", really):

1) it could be part of the couch
2) it could be dirt (kids with felt pen!!!) on the couch
3) it could be an artifact from compression
4) I am amazed that you saw it
5) I am amazed that we can even pull out such a small detail from a video grab!!

:)
 
vidled said:
LOL,
as for the red "pixel" (more a "pink blob", really):

1) it could be part of the couch
2) it could be dirt (kids with felt pen!!!) on the couch
3) it could be an artifact from compression
4) I am amazed that you saw it
5) I am amazed that we can even pull out such a small detail from a video grab!!

:)
Click to expand...

You can see it during all clip. It's static!!! like a dead pixel!
btw...I've noticed it on a 40'' lcd...

here's another example:

senzatitolo79qw.jpg
 
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Defect Pixel Mapping

Defect Pixel Mapping

Vincent,

Yes. You are correct. This is caused by dead pixels. We did not have time before NAB to map them out on the camera.

Cineform has added support to the Cinefrom RAW codec to map out defective pixels even after recording !

http://www.cineform.com/technology/CineForm_RAW.htm


You can see in the UI the ability to add x,y coordinates.

ColorMatrixExample.png



The Red coloring in the beard is from the combination of the codec and choice of demosaic processing (we have both fast and advanced modes...not sure which one was used). Look for some new test shots in the upcoming weeks.
 
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anyway... great footage (especially for a prototipe)! way better gamma & dof than the F-750 I'm used to play with. I can't wait to touch that cam!
 
ah ah it's true! And your fair play were quite well, Vincent!

But the best it was the Ari's answer. As well, his humble public request. IMHO, as far as it's possible to know, Silicon Imaging have the best support that it's possible to find in these boards. It's quite trustful! Congrats! I can tell if I will buy this product it will be following their work. Sony and other major ones might learn with these guys!
 
Emanuel,

Thank you for your kind words. I can only hope others in the industry learn about us and what we have to offer.

Vincent,

We look forward to working with you on your feature in the fall.

Do you think you would use the Silicon DVR or Mini (use your own recording) or both?

Which editing workflow. Premier or FCP?

What optics will you be using?

Have you looked at any of the Spoon footage? What do you think?
 
Ari Presler said:
Emanuel,

Thank you for your kind words. I can only hope others in the industry learn about us and what we have to offer.
Click to expand...
You're welcome but it's only true! You deserve it and you've been earning this achievement with your work and your product.
 
Angenieux - Zoom Lens for Silicon

Angenieux - Zoom Lens for Silicon

Vincent,

Do you typically rent or buy your lenses?

we have been talking to Angenieux about a new lens they introduced that has cinema quality zoom optics, but still breathes. We are considering OEM this lens with manual controls for Follow-focus gears to sell to the market for less than $10K. Do you think the market would have interest in this?


ENG19XHDE.jpg

(NEW) HD-e
Angenieux All Purpose Zoom
ENG lens 19x7.3 AIF HD-e

Zoom ratio : 19x
Focal length : 7.3 - 139 mm
Aperture : f/1.8 (7.3 - 105 mm)
f/2.4 (139 mm)
MOD : 0.6 m - 2’
Macro : 10 mm

SMD : Version with Standard Digital Servo control
SSD : Version with built in servo focus
SSDE : Version with 16Bits serial Digital connection for zoom
& focus

Digital servo control :
> Memorized focus and zoom positions.
> Repeatable focus and zoom positions (anti backlash system).
> Auto cruise zoom function.
> Zoom limit function.
> Digital laws for focus and zoom .
> Assisted internal focus .
> Serial communication.
> Optional built in focus (SSD version).
> Optional 16 bits output optical encoder (SSDE version).

Front diam. : 87 mm
Weight (approx.) : 1.7 kg - 3.7 Ibs
Length : 216 mm
UV filter included : M95 x 1 in sunshade
 
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"new lens they introduced that has cinema quality zoom optics"

i was always under the impression that a lens made for eng/efp 3 chip camera's was not optomized for a single chip type camera ( film or video) ??
perhaps you could shed some light on that .

IMO 26x zoom is too long .. in general i usually use 10-12x zooms .. maybe 15-19x for special events . when shooting interiors for dramatic projects tend to go with something in the 5-7x range .. perhpas others prefer the longer 26x type ?
 
George Palmer (HDPIX) states:

"Much has been said and conjectured about the effecacy of using B4 zoom lenses on single focal plane hard sensored arrays/sensors. First, it is important to understand that most modern era (the past 10 years) B4 mount zoom lenses, traditionally called TV lenses, are extremely well made and meet or exceed the quality standards for most film zoom lenses of the same era. Some, such as the B4 or PL mount Angenieux Optimo far exceed those performance standards, and, except for certain "high end" paramaters such as "breathing", even non-Cine style HD zooms such as the new 19x7.3AIF Angenieux lens are perfectly suited for both multi-sensored or single sensored cameras.

Furthermore, it is the collorary situation that has created some of the confusion on this issue, as most film lenses, zooms and primes are optimized for single focal plane film cameras, and do not necessarily perform as well as B4 lenses on prism based or single hard sensor video cameras, even with high end adapters. In fact, many have used the Angenieux HD/Film Prime Adapter (known to some as the CLA-35) to adapt their favorite film prime lenses to the B4 mount with great creative success. And while it is possible to use those cherished PL mount lenses on a B4 mount camera for creative comfort and effect, these lenses are optimized for a single, transmittive capture media, not a reflective single sensor such as a CMOS or CCD sensor, and, certainly not, a prism based multi sensor camera . Some film lenses, such as the Angenieux non Optimo, Cine lenses do meet "Digital, or HD" imaging standards only because of and with updated optical path and coating improvements, but most other non-Digital film lenses have not had the benefit of such updates, and are, therefore, not as appropropriate for use on Digital, HD single or multi hard sensored cameras."


What lens in the 10-12X do you think would be best suited for our camera?
 
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