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Sony NXCAM / AVCHD Camcorders
Sony HXR-NX100, HXR-NX70, NX30, NX5, NX3/1, HXR-MC2500, HDR-AX2000, etc.


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Old July 20th, 2011, 05:15 PM   #1
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Depth of Field

Does anybody know if the Depth of Field for the HXR-NX70U
is the same as the HC1 or that of a larger chip camera such as
the HXR-NX5U.
Bob Magill is offline   Reply With Quote
Old July 21st, 2011, 12:16 PM   #2
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Re: Depth of Field

Hi Bob,

I cannot compare with the cameras you mention. You've probably already seen this, but I posted a telemacro sample a while back:

http://www.dvinfo.net/forum/sony-nxc...acro-test.html

You can get a good DOF on the NX70 using the usual tricks (zoom in, open the iris, or use telemacro). In anything else, it's pretty hard to get a shallow DOF.

Sorry if this isn't directly helpful.
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Old July 21st, 2011, 12:56 PM   #3
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Re: Depth of Field

Thank you Mike. The video is very good.

Did you use the focus ring or the touchscreen to focus on the different areas?

Another question I have is that when you engage the active steadyshot, it also alows
you 14X but does it jump 4X in the process and you loose the wide angle?

Thanks for your help.
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Old July 21st, 2011, 02:27 PM   #4
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Re: Depth of Field

I used the manual focus ring in my video, Bob - it took a couple of practises to get it right, but it was pretty easy to focus. I used the expanded focus at times, and the peaking was very useful as well.

I don't really like the touch screen focus, but that's probably just me. I know others think it is great. Maybe I just have big fingers!

When you engage active steadyshot, the picture does noticeably zoom in slightly. I presume it uses a secondary software-type stabilisation on top of the optical image stabiliser. You lose a very slight amount of wide angle, but not so much that you would notice.

I haven't actually measured the difference in the zoom, to find out about the 14x and the digital zoom. I must do that soon.
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Old August 8th, 2011, 04:19 AM   #5
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Re: Depth of Field

Quote:
Originally Posted by Bob Magill View Post
Does anybody know if the Depth of Field for the HXR-NX70U
is the same as the HC1 or that of a larger chip camera such as
the HXR-NX5U.
The Depth of Field can't be the same as that of a larger chip camera, because it is in direct correlation to the focal length - and with smaller chips you need smaller focal lengths to get the same angle of view.

The depth of field is the same at 25mm on every camera, but on a small chip camera 25mm is a tele, while 25mm on a FF sensor is wide-angle.
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Old August 8th, 2011, 10:49 AM   #6
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Re: Depth of Field

Quote:
Originally Posted by Bob Magill View Post
Another question I have is that when you engage the active steadyshot, it also alows
you 14X but does it jump 4X in the process and you loose the wide angle?
This was discussed in another thread, check it out for examples: http://www.dvinfo.net/forum/sony-nxc...e-10x-14x.html

Compared to regular steadyshot, Active steadyshot zooms from 1.04X to 14.45X (27.4mm - 383mm) making an effective 14X while in Active Steadyshot mode.
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