The end of 35mm adapers and hv20s....

zcream said:
HV20 native res is 1920 not 1440 but I get your point. So we are talking lower res than the HV20. Hmmm.. Is the bokeh and dynamic range worth sacrifcing nearly 30% resolution ?
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It is not just that the D90 resolves a lower resolution picture, it is how it resolves that picture.

A HV20 signal downscaled with a nice FIR algorithm will look great, possibly better than the original, but the D90 picture suffers from terrible macro-blocking and detail loss, whoever decided on how the D90 was going to extract it's image from the high resolution sensor should be taken outside and shot.

I would happily take the D90 with a SD signal that was properly downscaled rather than the awful 720p signal they have managed to extract.
 
Steve Castle said:
There are other technical ways of reducing rolling shutter, but these rolling shutter compensation algorithms don't require any modification to sensor design.
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Steve, that paper has already been discussed, in fact Barry Green actually corrected me regarding these types of algorithms, they would fail on objects that move in the opposite direction (or any moving objects), so the correction would only work on static objects.

see here for the discussion:

http://www.dvxuser.com/V6/showthread.php?t=138562&page=3
 
Madmanden said:
In my world - 100% yes. But for others the resolution might be most important.
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I would sell my HVX200 if Panasonic released an SD DVX100 that had a 35mm sized CCD block.

An added bonus would be such few pixels on such a large block would theoretically mean Ultra low light sensitivity.

That would mean more to me vs. HD 1/3" CCD's
 
I read its possible to shoot at almost 23fps (with the 'motor drive' or continuous mode) with this camera using the small jpeg, it would destroy the shutter in no time, but at least you would have a decently sharp looking image, no? and almost 24p

Anyone tried using the motor-drive at max capacity? I often blast a d70 at nearly 12 fps. Of course I broke the shutter after 30,000 pulls or so...
 
zcream said:
Used a mini-ITX board with a PCI-e extender + Blackmagic Intensity card. Added a LiOn battery and a port for eSATA.
Have a Cineform license.. Essentially a DIY portable with a touchscreen and the Intensity card. The quality is awesome.
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Nice! Got any pictures of that rig?



Ryan Patrick O'Hara said:
I would sell my HVX200 if Panasonic released an SD DVX100 that had a 35mm sized CCD block.

An added bonus would be such few pixels on such a large block would theoretically mean Ultra low light sensitivity.
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Haha yeah, that would be awesome. I'd buy that for sure!


Matthew Bennett said:
I read its possible to shoot at almost 23fps (with the 'motor drive' or continuous mode) with this camera using the small jpeg, it would destroy the shutter in no time
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And that's why it's pretty much not feasable. :) I would hate to destroy the shutter by shooting 24-ish real frames per second over a long period of time.
 
SomewhereinLA said:
Nikon has always discerned their pro from non pro by the metallic body (and prices of course) of course you could argue all you want that the dx format is not a "pro" format...bla,bla,bla. it's all semantic really. Having started in photography over 25 years ago with a nikon" F" a 50mm nikkor, evrything is pro today by yesterday standard.
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Technically the gold ring signifies pro. But Canon shooters seem much more "interested" in L vs non-L and Nikon's line of designation is much less defined (in a good way).
 
Matthew Bennett said:
I read its possible to shoot at almost 23fps (with the 'motor drive' or continuous mode) with this camera using the small jpeg, it would destroy the shutter in no time, but at least you would have a decently sharp looking image, no? and almost 24p

Anyone tried using the motor-drive at max capacity? I often blast a d70 at nearly 12 fps. Of course I broke the shutter after 30,000 pulls or so...
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Maybe just for special occassions
 
frisco said:
Wow Zak hired out a chopper to test the D90 !!!! Thats dedication !!!! A $5000.00 gag to test D90 $999.00 camera !!!!

Talk about cinematic !!! That was cool..... I'm sure that footage is gonna end up in one of your features some day !!!

What War zone do live in?

frisco
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beverly hills.
 
As far as the resolution chart. I shot it from a tripod but kind of a flimsy one. I was outside on a sunny day with plenty of light. I used an old manual lens stopped down to about f8. I also shot a still pic with the camera at the same time. The still is much sharper and shows a lot more resolution so focus or the lens isn't causing the low resolution.
 
I haven't read through all the pages, but this is a cool new tool. Can anyone tell me why I'm seeing what I think is a rolling shutter issue in the trains clip? Again, sorry if this was covered on page 186 or something, but I simply can't find it. I guess I'm wondering how a locked-off shot seems to be wavering.

e
 
Problem with compression ??

Problem with compression ??

Hi Lee. It could be just the problem with the compression. We are trying to fit 1MB i.e. 1280x720 @ 24P inside 12.5 mbps while DV fits 500K SD at 25 mbps with a more advanced JPEG compression scheme..
Standard DV is not only 4x times less compressed but also a better compression..

If only we can get the 4:2:2 or 4:4:4 HDMI signal..

Lee Wilson said:
It is not just that the D90 resolves a lower resolution picture, it is how it resolves that picture.

A HV20 signal downscaled with a nice FIR algorithm will look great, possibly better than the original, but the D90 picture suffers from terrible macro-blocking and detail loss, whoever decided on how the D90 was going to extract it's image from the high resolution sensor should be taken outside and shot.

I would happily take the D90 with a SD signal that was properly downscaled rather than the awful 720p signal they have managed to extract.
Click to expand...
 
Anhar Miah said:
Steve, that paper has already been discussed, in fact Barry Green actually corrected me regarding these types of algorithms, they would fail on objects that move in the opposite direction (or any moving objects), so the correction would only work on static objects.

see here for the discussion:

http://www.dvxuser.com/V6/showthread.php?t=138562&page=3
Click to expand...

This is under the assumption that rolling-shutter compensation will be applied without prejudice on every scene; which as you say can cause problems. However, if a reference is provided by an accelerometer or other device, then the reference can be used by the rolling shutter compensation algorithm to compensate relative to movement. So the algorithm can take into consideration if the camera is panning left/right/up/down, still, etc. There are also several software-based solutions then the simple one provided in the paper in question, like other combination spline/block based motion estimation methods, 3-D feature correspondences, etc; which can better compensate for non-static objects, but are computationally more complex.

Of course nothing is that simple, there are several technical and cost considerations as well. If it could be applied easily, it would have been applied already. But a lot of companies are heavily invested to make sure that CMOS is the future imaging sensor. CMOS deficiencies like modulated light effects and skew created by rolling-shutter are being addressed, there are both hardware and software solutions to all of this, the real question is which one can be most effective as well as cost-efficient.
 
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ando said:
so let me guess. it doesn't matter to you if you spend $999 on d90 or $2999 for the 5d replacement? great logic. why bother if you have 2 Reds already?
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How I spend my money is none of your business, but I'll humor you anyway:

No, it doesn't matter to me if I spend 1400.00 on a d90 or 2999.99 on a 5D if the 5D shoots better video. Yes, even with the RED ONE sitting right next to me on the floor.

If you can't fathom why I would want a DSLR that shoots decent 720p, even after you take the time to imagine what a DSLR Body looks like sitting beside a RED ONE built up for minimal production, you need to stop posting about Logic and shoot more.
 
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