Panasonic Removable Lens Four Thirds HD AVCHD Camera

There seems to be some aliasing + stair stepping in the night shot



Beside that the footage has apparently no 3:2 pulldown flag. In any case PP can´t recognize it. But maybe i made something wrong - in pal-land we´re not so experienced with this kind of stuff ;-)
 
i'm going on my Honeymoon in July and I think this camera will be perfect for the trip, take some stills, record some sights....very convenient! can't ask for anything better and at the moment, I am completely sold on this camera. i hope nothing changes!
 
capice said:
There seems to be some aliasing + stair stepping in the night shot
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That image has been scaled down quite a bit. I don't know if there's stairstepping in the original footage or not, but it's not fair to judge off an 800-pixel-wide frame when the original footage might have been 1920-wide (or at least 1280 wide).

Or, it might have been a frame taken from one of the interlaced frames.

I've got some clips that have slanting lines in 'em, I'll go root around and see if I can find one and show whether there's stairstepping or not.
 
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Steve Castle said:
Also, only "HD" lenses will autofocus in video, so far there is only one; the new 14-140mm.
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I can think of no reason why this would be the case. The HD lens was designed with a new auto-focus mechanism, but that mechanism is a new type of linear motor to allow silent autofocusing while shooting video, so that your mic doesn't pick up the AF noise.

I believe that any MFT and the adapted FT lenses that otherwise support AF when adapted should AF during video.

Possibly the non-HD and adapted lenses will be slower to AF and they should be louder, but I would expect AF to work in video mode with them.

I made a thread with links to some resources from people who have been working to adapt lenses to the G1:
http://www.dvxuser.com/V6/showthread.php?t=169348
 
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Okay, I took a shot of the convention hall, and came up with mixed results on this. For the most part it looks like there's no stairstepping at all, but on one piece it looks confusing.

For example, here are some pixel-to-pixel extracts from the original 1920x1080 frame:
Angles.jpg


Beautiful angles, no stairstepping, no aliasing.

Or this:
Angles2.jpg


Smooth arc, no stairstepping.

But then there's this:
Angles3.jpg


Now, is the top of that stairstepping? Or was it just made with a wavy fabric? I don't know. You can see the effects of 4:2:0 chroma on the bottom of it, but the top -- I tend to think that with the other angles being as clean as they are, this particular display must have been shaped that way.

The full res picture these were taken from is here.
 
In this shot, the blue railing in the background is not level, and there's angles on the light shade. No stairstepping. The shot isn't particularly in focus, so don't judge it on that, just looking at stairsteps and I'm not seeing any.
 
Okay, this shot is totally out of focus and generally horrible, but there's lots of angles. No stairstepping.

These are all 1920x1080 frames. If you're scaling it down to smaller than 1920x1080, stuff might happen, but at the original frame size right off the camera head, it looks like there's no aliasing/stairstepping.
 
It'll be really awesome if the HDMI out is Live. Being able to bypass the low bitrate when you need to will be sweet.
 
hunter richards said:
Wow, That wide convention hall shot is full of detail, I wasnt expecting that much from the avchd codec at that bit rate.
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Wait until you see the 720p. It'll knock your socks off. You won't believe that 720p can look that good, but it does.

Has anyone yet considered that unlike the D90 or 5D, this little cam will do slow-mo overcranking? 720/60p, drop it in your 24p timeline... heh heh...
 
Of course we've considered that! Muahahaha.

That's one of the things I highlighted in the "tradeo-offs" list

The camera does more formats than either of the others. And a higher frame rate than both.
 
Barry_Green said:
Okay, this shot is totally out of focus and generally horrible, but there's lots of angles. No stairstepping.

These are all 1920x1080 frames. If you're scaling it down to smaller than 1920x1080, stuff might happen, but at the original frame size right off the camera head, it looks like there's no aliasing/stairstepping.
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looks like its in the middle of jello'ing :)
 
Barry_Green said:
Okay, this shot is totally out of focus and generally horrible, but there's lots of angles. No stairstepping.
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Well, for sure it does not suffer from D90 stairstepping - nor D90 jello shutter either. Plus higher rez.

And we don't really know what image settings (shutter speed, sharpening, color sets etc.) are part of this yet.

I tend to think Nikon and Canon can't just firmware to match - the readout off the sensor is clearly faster and that would take a redesign, not a quick fix.
 
John Caballero said:
The real gamechanger perhaps?
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Well, you've definitely got your nay-sayers. A guy over on ProLost had this to say ...

"These little Rebel cams are not GAME changers... They are more like first and ten at the 45 yard line.... a good start. For one, you are shooting some Decent fps (24) and decent DOF ... finally... with a major tradeoff in 8bit compressed original footage ... so your stuff better look good to start with ... RED has actually changed this game ... as I suspect none of these other players would have dipped into this game if not for them taking all the risks. But more and more I wonder how fast everyone will get bored of trees and leaves footage or people "looking for something" films."
 
John Caballero said:
Thats the beauty of this camera. It apparently shares basically all the creative functions of the still side. l
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No doubt. It will be interesting to see how the various still image controls impact video esp codec encoding etc. I suspect there may be much better settings for video than anything posted yet especially since this is from the consumer division. Dialing down sharpness, finding good gamma curves etc. may much improve the image yet.
 
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