Product Info

The Sigma EM-140 DG Ring Flash Is Ideal For Photographing Subjects In Fine Detail - Close-Up Photography - And Is Extremely Effective For Scientific And Medical Applications.

Dual Flash Tubes Can Fire Simultaneously Or Separately. Using Only One Flashtube Creates Modeling, Which Can Give A Three-Dimensional Feeling To The Subject. The Modeling Flash Function Makes It Possible To Check For Reflections And Shadows Before Actually Taking The Flash Picture.

A Wireless Flash Function Is Also Available, Where The EM-140 DG Is Used As Master And The EF-500 DG Super As A Slave Unit For Creating Fine Shadow Details. High Speed Synchro Functions Are Also Available For Advanced Flash Photography.

Key Features

" Fully Dedicated With S-TTL With Sigma SA Photo Or Digital Cameras

" Wireless TTL Flash Control (4 Channels)

" High Speed Synchro Flash

" Stroboscopic Effect (Power Level And Frequency Customizable)

" Modeling Light, Also Provides AF Assist

" Backlight Illuminated LCD Panel

Features and Spec

General For Camera Model : EOS
Flash Specifications Power Source : 4 AA batteries
Guide Number : 46' 14 m
Recycle Time : 4 seconds with NiMH batteries
Recycle Time : 6 seconds with alkaline batteries
Angle of Coverage : 80° vertical/horizontal
Auto f/Stops : No
Vari-Power : Yes; Full, 1/2, 1/4, 1/8, 1/16, 1/32 & 1/64
TTL Dedication : Yes S-TTL
Max Usable Diameter Size : 77mm
Modeling Light : Yes
Dimensions Weight Without Battery : 15.1 oz
Weight : 15.2 oz.