Z7U test footage - shot with 200mm nikkon at DVinfo.net

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Sony HVR-Z7 / HVR-S270
Handheld and shoulder mount versions of this Sony 3-CMOS HDV camcorder.


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Old July 6th, 2008, 03:34 PM   #1
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Z7U test footage - shot with 200mm nikkon

here's some test footage I shot at the LA river yesterday.. I used a 1/3" to 2/3" adapter - and then a 2/3" to nikon lens adapter. So 2 adapters - until finally sticking a 200mm nikon lens on.. I'm pretty happy with the way it looks. My M25 Matthews tripod is no good for long distance closeups because it's just not stable enough. The footage is also overexposed (i relied on the flip out lcd screen, which was hard to see in daylight.. gonna have to get used to that)

http://www.maxcarlsonfilms.com/testf...er_hdvtest.mov
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Old July 6th, 2008, 09:20 PM   #2
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you're right about the tripod issue. It was quite shaky in my opinion, but something which i see can be easily corrected with a few hundred dollars towards a new tripod.

as for the color, i dont think it'll be a problem to color correct it in post.
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Old July 7th, 2008, 12:07 AM   #3
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tripod

yeah the Matthews M25 is pretty low end. I got it when I got the camera. I have a sachtler that I usually use, which I'll definitely be using from now on. The only good thing about the M25 is that it's very portable.
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Old July 7th, 2008, 01:47 AM   #4
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with two adapters being used, what kind of conversion factor do you get with the image? i've read that a 1/3" to nikon gets a 7x magnification added on.
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Old July 8th, 2008, 03:24 PM   #5
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Quote:
Originally Posted by Max Carlson View Post
The footage is also overexposed (i relied on the flip out lcd screen, which was hard to see in daylight.. gonna have to get used to that)
I have noticed that the LCD isn't good in sunlight, viewfinder isn't bad though. do you use Zebras? that should help.

nice footage nonetheless, thanks for posting.


Quote:
Originally Posted by Ryan Valle View Post
with two adapters being used, what kind of conversion factor do you get with the image? i've read that a 1/3" to nikon gets a 7x magnification added on.
"7x" is relative...

here is what I just wrote on http://dvinfo.net/conf/showthread.php?t=125063

*sigh, I have been busy and have yet to put this into a nice webpage w/pics & charts & everything.

the short version, a 50mm lens is a 50mm lens is a 50mm lens, no matter it being on a 35mm film camera, a 2/3" betacam or a 1/3" Sony CMOS Z7.

this Canon looks like it goes from 7mm to 112mm lens. the Z7 stock lens goes from about a 4mm to 54mm. so when you have the Zeiss or the Canon at 20mm, they will be the same. when you have them at 50mm they will be the same. the difference is the Zeiss will go wider, the Canon will go tighter.

now if you take the Canon & put it on a 1/2" camera while @ 7mm, then the Z7 @ 7mm, the FOV (field of view) WILL be different. the FOV will be wider on the 1/2" than the Z7 (or any 1/3" camera).

this whole "magnifying" issue bugs me b/c I don't think people really understand it & keep repeating bad understanding of it. it took me a long while of reading to really figure out that a 50mm lens will always be a 50mm lens, but the FOV of a 50mm lens changes depends on size of the negative / chip.
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Old July 8th, 2008, 06:15 PM   #6
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Originally Posted by Zach Love View Post
I have noticed that the LCD isn't good in sunlight, viewfinder isn't bad though. do you use Zebras? that should help.

nice footage nonetheless, thanks for posting.




"7x" is relative...

here is what I just wrote on http://dvinfo.net/conf/showthread.php?t=125063

*sigh, I have been busy and have yet to put this into a nice webpage w/pics & charts & everything.

the short version, a 50mm lens is a 50mm lens is a 50mm lens, no matter it being on a 35mm film camera, a 2/3" betacam or a 1/3" Sony CMOS Z7.

this Canon looks like it goes from 7mm to 112mm lens. the Z7 stock lens goes from about a 4mm to 54mm. so when you have the Zeiss or the Canon at 20mm, they will be the same. when you have them at 50mm they will be the same. the difference is the Zeiss will go wider, the Canon will go tighter.

now if you take the Canon & put it on a 1/2" camera while @ 7mm, then the Z7 @ 7mm, the FOV (field of view) WILL be different. the FOV will be wider on the 1/2" than the Z7 (or any 1/3" camera).

this whole "magnifying" issue bugs me b/c I don't think people really understand it & keep repeating bad understanding of it. it took me a long while of reading to really figure out that a 50mm lens will always be a 50mm lens, but the FOV of a 50mm lens changes depends on size of the negative / chip.
Yeah, I understand that a 50mm lens will always be a 50mm lens, however, when you use it with a Z7U, you will result in a "modified" image that isn't going to be 50mm, even though the lens is.

I could care less if its a 50mm lens or whatever because its the resulting image that matters most, thus knowing the "magnification" factor will help. Other terms I've heard people use is "conversion factor," which is more appropriate to use since that is what really is happening to the 50mm lens when using an adapter with it.
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