Compatible ONLY with Sigma brand cameras
The Sigma 530ST DG ST S-TTL Shoe Mount Flash is Sigma's economical full-TTL flash, and has been updated with improved coverage range and a stronger power output. It features a powerful Guide Number of 174'/53 m at 105mm, and covers a focal range from 24mm to 105mm. This flash provides full TTL operation with digital SLR cameras, including full S-TTL operation with applicable cameras.
Just as with many of Sigma's products, you will find features on the 530-ST that normally would only be associated with much more expensive flashes. The perfect economical all-around flash for any digital or 35mm autofocus SLR shooter.
| Type | Shoe Mount |
| Guide No. |
92' (28 m) at 24mm 132' (40 m) at 50mm 174' (53 m) at 105mm |
| Angle of Coverage |
84° to 23° (24-105mm lenses in 35mm format) 103° (17mm with Wide Panel supplied) |
| Variable Power | 1/1, 1/16th |
| TTL Dedication | Yes (S-TTL) [compatible ONLY with Sigma brand cameras] |
| Bounce Head | Yes; 90° up, 7° down |
| Swivel Head | Yes; 90° to right, 180° to left |
| Zoom Head | 24-105mm auto-zoom (flash senses focal length & adjusts) |
| Off Camera Terminal | No |
| Recycle Time |
6 seconds (based on fresh alkaline batteries & full power) 4 seconds (based on fresh Ni-MH batteries & full power) |
| Power Source | Four 1.5V "AA" batteries (alkaline, lithium, NiCad & NiMH) |
| Dimensions | 3.0 x 5.5 x 4.6" (76 x 140 x 117mm) WxHxD |
| Weight | 10.8 oz (305g) |