Yasuko Kuroi - KELVIN

Yasuko Kuroi
Product Manager
International Sales & Marketing Dept.
Sekonic Product Line-up
Middle Class (Light Meter)
Entry Level (Light Meter)
L-208
L-398A
L-308S
L-308DC
L-478D
L-478DR
L-358
(Discontinued)
High-End (Light Meter)
L-758D
L-758DR
L-758CINE
Spectrometer (Color Meter)
C-700
C-700R
C-7000
Illuminometer
i-346
LITEMASTER PRO L-478 SERIES
Six Meters in One
„
Flash Meter (“R” = Radio Triggering)
„
Ambient Meter
„
Incident Meter
„
Reflected 5°Spot Meter
„
HD_CINE/CINE Meter
w/attachment
(Shutter Angles, f/s, Filter Compensation)
„
L-478D
Illuminance/Luminance Meter
(Lux, Cd/m2, Foot-candle, Foot-lambert)
L-478DR
Advanced Features
„
Radio Triggering/Control Built-in
(L-478DR series only)
„
Exposure Profile
z
z
Match the exposure characteristic of DSLR
Respond to the dynamic range of DSLR
„
Flash Analyzing Function
„
Memory Function
„
Custom Setting
Radio Triggering/Control Built-in
(L-478DR series only)
„
Radio Triggering built-in
„
Flash Power Control
„
Modeling Lamp ON/OFF or Control
Programmable Light Meter
z
Up to 10 Exposure Profiles can be
stored in the meter
z
Match the exposure characteristic of DSLR
z
Respond to the dynamic range of DSLR
z
Match the response of flash and ambient
light
z
z
For every ISO (ISO 3 to 409,600)
z
Set Clipping Point (user defined limit points)
Programmed using Data Transfer
Software
z
Set Exposure Profile
z
Custom Setting
z
Firmware Update via Internet
Pre-Exposure Warning
ƒ
6
The Camera Profile is displayed on the analog
scale when the Mid.Tone is set to:
ƒ
ƒ
ƒ
ƒ
EV scale
Measurement scale (Aperture, Shutter Speed)
Indicators (arrows) change their color based on
the stored profile compared to the measured
values
ƒ
- - - Within dynamic range/clipping point
ƒ
- - - Out of clipping point
ƒ
- - - Out of dynamic range
The analog scale shows the gap (in number of fstops) between in and out of dynamic/clipping
range
Flash/Ambient Analyzing
ƒ
Measures ambient and flash
simultaneously
ƒ
Ambient
component
Measures ambient separate
from flash exposure.
ƒ
Flash
component
Displays a ambient/flash ratio
using color bars
ƒ
Measure and displays flash
separate from ambient
exposure
ƒ
Provides percentage of flash in
the exposure
100% flash
0% flash
50% flash
Enhanced Digital Video/Cine features
HD CINE Mode
„
HD CINE mode
ƒ
ƒ
ƒ
ƒ
ƒ
T (shutter speed)
Frame Rate (f/s)
F (Aperture)
Lx, CdM2, fc, fl display
ISO
CINE Mode
„
CINE mode
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
T (shutter speed)
ANG (shutter angle)
Frame Rate (f/s)
F (Aperture)
Lx, CdM2, fc, fl display
ISO
Enhanced Digital Video/Cine features
CINE Mode
Frame rate (f/s)
Shutter angle
„
Select frame rate and
shutter angle for your
special effects and
applications
„
Create your own frame
rates and shutter angle (in
Custom setting) if numbers
are not in the original list
Enhanced Digital Video/Cine features
Illuminance Mode
ƒ
ƒ
Lux (lx)
Foot-candle (fc)
Luminance Mode
ƒ
ƒ
Candle / m2 (cd/m2)
Foot-lambert (fl)
(5 deg. viewfinder required)
Additional Data
ƒ
Illuminance /Luminance
displayed with exposure
or independently
Enhanced Digital Video/Cine features
„
Filtration Compensation Mode
•
•
•
Filter Compensation value can be entered directly
Filter Pack in Use can be stored (select up to four filters in use)
Custom filter factors and names can be created
Filter Compensation Setting
Edit Filter Setting
Memory Clear and Recall
„
Up to 9 readings are stored
„
Review all stored values and
recall their measured f-stop
„
All or individual stored values
can be cleared
Custom Settings
„
13 settings can be customized, plus factory default setting
„
Select only those function you need or want
Spot Attachment
ƒ
ƒ
ƒ
ƒ
ƒ
5° Spot attachment for reflected light
measurements
Flash measuring range f 2.8 ~ f128.9
Ambient measuring range EV 3.0 ~ EV 22.9
Necessary for Exposure Profiling
Necessary for Landscape use
Retractable Lumisphere
„
Extended position
(standard 3D subject – studio portraits)
„
Retracted position
(for flat artwork, contrast and ratio,
illuminance measurements)
What is Exposure Profiling?
Each type of digital camera sensor has its own unique way of responding
to various exposure conditions. These conditions often change the
accuracy of the rate ISO and the dynamic range.
Left: image was exposed using a
programmed L-478DR with the
Exposure Profile and Pre-Exposure
Warning and balanced the flash
light.
Right: Using a camera’s built-in
meter or conventional hand-held
light meter
How do I Profile?
1. Shoot the Test Target
<Compatible targets>
Exposure Profile Target
z
Sekonic Exposure Profile target
z
Sekonic Exposure Profile target
z
X-rite ColorChecker (Classic, Passport)
Exposure Profile Target II
X-Rite ColorChecker
How do I Profile?
2. Evaluate results in Data Transfer Software
z
Analyze the image
z
Automatically calculate the exposure profile
How do I Profile?
3. Transfer the Profiles to Light Meter
Data Transfer Software
„
Creates Exposure Profile (calculates,
stores and transfers the data to and
from the L-478D/DR and the
computer)
„
User upgradable firmware
„
Custom Settings Menu
„
Communicates with (MAC or
Windows) computers via a USB
cable
Yasuko Kuroi
y.kuroi@sekonic.co.jp
www.sekonic.com