Nikon Z 7 Kurzanleitung
Professional
Technical Guide
—N-Log Recording—
En
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Table of Contents
N‑Log: A Primer ................................................................... 3
• Why Use N‑Log?...............................................................................4
Filming N‑Log Footage ...................................................... 6
• Using Camera Controls.................................................................10
• View Assist.......................................................................................11
• Ensuring Consistent Exposure....................................................12
3
N‑Log: A Primer
The term“N‑Log”is an amalgam of“N”, for“Nikon”, and“log”,
short for “logarithmic function”. The logarithmic function
in question is that used in digitizing light levels based on
the density characteristics of negative lm to render expo‑
sure dierences much as humans perceive them. This is
known as a “log curve”.
The process of lming movies using a log curve is referred
to as “logarithmic” or “log‑format” recording. Log format
recording preserves highlights and shadows in scenes in
which they would otherwise be lost and is intended for
footage that will be processed post‑production, when
color grading can be used to produce high‑quality video
with a wide color gamut that takes advantage of the large
amount of tone information available for an expanded dy‑
namic range and smooth color gradients.
Nikon’s unique N‑Log format was developed to take full
advantage of sensor dynamic range. It oers excellent bal‑
ance between highlights and shadows and is optimized
for 10‑bit movie recording.
4
Why Use N-Log?
Shooting in N‑Log format preserves details in highlights
and shadows and expands the range of eects available
through color grading.
Preserving Details in Highlights and Shadows
N‑Log preserves highlights and shadows in high‑contrast
shots, such as those that mix indoor and outdoor lighting.
Non–
N‑Log
Footage shot without N‑Log shows
loss of detail in highlights.
N‑Log
N‑Log produces colors with less ap‑
parent contrast but more variation.
N‑Log
+ color
grading
Highlights, shadows, and color
variation preserved.
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5
Improved Color Grading
Third‑party movie‑editing software that supports color
grading can be used to process the same footage in a va‑
riety of dierent ways, as is shown in the examples below.
No color grading
6
To record N‑Log footage, connect the camera to a digital
recorder that supports 10‑bit video. Use a Type C HDMI
cable (available from third‑party suppliers) and be sure
the camera is o before connecting or disconnecting the
cable.
Digital recorder
Choose cable with connector for
external device
To lm N‑Log footage:
1 Select 10 bit for Output data depth.
N‑Log footage can only be
recorded at a bit depth of
10 bits. In the setup menu,
select 10 bit for HDMI >
Advanced > Output data
depth.
Filming N‑Log Footage
7
2 Enable N‑Log recording.
Return to HDMI > Ad‑
vanced in the setup menu
and select On (cannot
record to card) for N‑Log
setting. Note that N‑Log
footage is recorded only to
the external device, not to
the camera memory card.
3 Congure the recorder for HDMI input.
For details, see the documentation supplied with the
device.
4 Start lming.
If On is selected for HDMI> Advanced> External re‑
cording control in the camera setup menu and the
recorder supports the Atomos Open Protocol, you can
start and stop recording using the camera movie‑re‑
cord button (page 10); otherwise, you will need to
enable recording on the external device. Contrast can
be enhanced for display on the camera during record‑
ing (view assist; page 11).
When the camera standby timer expires, the monitor
will turn o and HDMI output will end. Choose No
limit or a time longer than the anticipated recording
time for Custom Setting c3 (Power o delay)> Stand‑
by timer.
8
N‑Log Recording
While N‑Log recording is in eect, Picture Controls cannot be
used, ISO sensitivity cannot be set lower than ISO 800 or to
values of from Hi 0.3 to Hi 2, Active D‑Lighting and high ISO
noise reduction turn o automatically, and photographs will
not be taken when the shutter‑release button is pressed all
the way down. The camera may also have trouble focusing;
this is not a malfunction. The subject will be displayed in the
monitor, not the viewnder, regardless of the display mode
selected, and icker or noise may be visible in the display.
Note that because HDMI output is not available when the
camera is connected to devices running SnapBridge or
Camera Control Pro 2, these applications cannot be used for
N‑Log recording.
9
Filming N-Log Footage
Frame Size/Frame Rate
Note the following when choosing a frame size and frame
rate for N‑Log recording:
Frame size/frame rate Notes
3840× 2160 30p • Icons and characters in the monitor
display at low resolution, but this has no
effect on the footage actually recorded.
• The angle of view is reduced to about
90% (Z6 only; on the Z7, the angle of
view is reduced only when the DX image
area is selected).
3840× 2160 25p
3840× 2160 24p
1920× 1080 120p N‑Log recording not available.
1920× 1080 100p
1920× 1080 60p
No restrictions apply.
1920× 1080 50p
1920× 1080 30p
1920× 1080 25p
1920× 1080 24p
1920× 1080 slow-mo N‑Log recording not available.
10
Using Camera Controls
If On is selected for HDMI> Ad‑
vanced > External recording
control in the camera setup
menu and the recorder sup‑
ports the Atomos Open Pro‑
tocol, you can start and stop
recording using the camera
movie‑record button(for information on whether your re‑
corder supports the Atomos Open Protocol, contact the
manufacturer). The camera displays Ain movie live
view and Bduring movie recording. During recording,
check the recorder and recorder display to ensure that foot‑
age is being saved to the device.
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