I was reading on 2k resolution. While working at Sony Pictures, most of the special effects I worked with were done at 2k. The information I was reading said
Normally the image will be output at 2K Academy aperture. This means that 2048 pixels will be recorded in each horizontal line of the visible area of the image. A 2K Academy image is 2048 pixels wide by 1492 pixels high. (This is an aspect ratio of 1.37:1 rather than the 1.33:1 or 4:3 aspect ratio normally associated with video.)
Now I'm of the opinion it would be nice to have this resoltion in square pixels. That way we would know it could be used to burn to 35mm film. But it could also be translated to 1140x1080 rectangular pixels for Hi-Def.
Looks like they want $1448. for the 2K camera. I use a USB 2.0 webcam that does 1280X1024 and costs under $70.00. I had a c-mount adapter made for it and I use the Sony 45mm Macro lens to shoot the film gate of my modified Bolex 18-5 Super-8 projector. It's not perfect but it's close enough for what I do with it. I am pretty sure it has square pixels.
Regards,
Paul Cotto
Konton wrote:I was reading on 2k resolution. While working at Sony Pictures, most of the special effects I worked with were done at 2k. The information I was reading said
Normally the image will be output at 2K Academy aperture. This means that 2048 pixels will be recorded in each horizontal line of the visible area of the image. A 2K Academy image is 2048 pixels wide by 1492 pixels high. (This is an aspect ratio of 1.37:1 rather than the 1.33:1 or 4:3 aspect ratio normally associated with video.)
Now I'm of the opinion it would be nice to have this resoltion in square pixels. That way we would know it could be used to burn to 35mm film. But it could also be translated to 1140x1080 rectangular pixels for Hi-Def.
Hey Paul, did you ever post video files at full resolution so we could see what the quality you got was? I forget. Also what's the model of that webcam? I'd like to research it.
I've actually tryed out a couple of HD cameras recently, and one of them I've tried was a 2MP 1600x1200 USb 2.0 cam. It uses the same sensor as the lumenera, just at 2MP res instead of the 3MP 2048x1536 res. Here is what you really need to be cautious of. ....
1) be sure that you can get an evalutation camera to make sure it works the way you'd like.
2) Using a USB 2.0 interface is only good if you have a really fast computer, I have a 1.7ghz PC with 1.5 gig of ram, 256MB vid card, and 320MB RAID.........and it was only enough to get me .45 frames per sec out of the 2MP cam. NO GOOD!! It was supposed to run at 7fps. Reason for this is the camera relies on the clock speed of the CPU. I'm not a tech guy but that was what I was told was the problem.
3) I could tell you where to buy a 3MP camera with the same chip as the lumenera for under $800 but the problem is it doesn't work with cinecap, so you'd need to use thier capture software, and attach a cable from your WP directly to the camera trigger bypassing the mouse(actually pretty simple setup) to get it to work
4) Pauls setup is actually the best camera I have tried so far believe it or not and for the price....well you get much more than you pay for.
Maybe this is the 1.3mp USB 2.0 webcam that you use?
Orite Web Cam MC-310
Features:
1.3 Mega Pixels CMOS Sensor
Built-In Microphone
USB Interface with Plug and Play
Snapshot Button for Image Capture
Lens Focus from 3 cm to Infinity
Full Screen 640 x 480 Display
1204 x 1008 Still Image
High Quality Lens for Sharp Pictures
Clip-on for Notebook / Laptop / stand for LCD Monitor
High-quality still pictures and motion video capturing
Specifications:
Sensor: 1/2" CMOS 1.3 Mega Pixels ~ Video Format: 24-Bit True Color ~ USB Interface: Compliant to USB 2.0 and 1.1~ Image Res: 1024x1008, 640x480, 352x288, 320x240, 176x144, 160x120 ~ Video Resolutions: 640x480, 352x288, 320x240, 176x144, 160x120 ~ Adjustable Focus: 3 CM to Infinity ~ Automatic White Balance, Automatic Exposure, Automatic Compensation ~ Digital Videos formats: AVI and WMV ~ Digital Photos formats JPEG and BMP
This is the camera that I want to buy. only 71 bucks here.
I believe the type of shot should determine the scanning resolution. For instance, a Wide shot needs more resolution in my opinion to make up for the additional contrast variances throughout the frame versus a close up or a shot with less contrast.
A backlit wide shot with even more contrast might require even more resolution to try and "save" valuable information in the blacks.
It's quite possible that on a lush facial close-up a 2K works fine but in a wider shot a higher scanning rate is needed.
That's my opinion.
Last edited by Alex on Fri Dec 24, 2004 5:57 am, edited 1 time in total.
Yes, is that the camera Paul? Please let us know. The problem I'm looking at right now is the Workprinter seems to run at about 7.5 fps, but the camera I want goes at 6 fps. I guess I'll have to keep searching.
