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The Nikon SB-11 Speedlight is a very big and bulky Hammerhead flashgun that can be used with DSLR cameras nowadays, manually.
Type: Handheld Mount.
Camera Type: For Film Cameras/Digital.
Weight Approximately: 860g / 30.3oz.
Guide No: 117.
The angle of Coverage: 40° vertical / 56° horizontal.
Vari-Power: Manual (full output).
TTL Dedication: Yes for a film camera, not available for digital cameras.
Zoom Head: No.
Bounce Head: No.
Swivel Head: No.
Recycle Time: Two seconds with SD-8 battery back and Eneloop Pro AA High Capacity Ni-MH batteries.
Power Source: penlight batteries 8 – 1.5v AA.
Dimensions (h) x (w) x(d): 276mm x 104mm x 118mm.
I use Panasonic Eneloop Pro AA High Capacity Ni-MH Pre-Charged Rechargeable Batteries in the flashgun and the Nikon SD-8 battery back,
then recycle time is two seconds when shooting the Nikon SB-11 in full power with those batteries.
The Nikon SB-11 has no overheating protection.