the down side was that no zoom lens ever offered a faster aperture than f2

Lens front cap

57" MAGNET Neodymium IMPEDANCE 32 ohm (1 kHz) DIAPHRAGM PET FREQUENCY RESPONSE 10 Hz-22

For Nikon AF and manual focus SLRs

Input Voltage: 100 to 240 VAC

Dell Alienware AW2521H 25-inch 360Hz FHD 1920 x 1080 PC Gaming Monitor with G-Sync 4425 the down side was thatSPEED YOU CAN'T OUTPLAY Alienware 25 Gaming Monitor AW2521H Alienware's 24. 5" monitor featuring the world's fastest refresh rate of 360Hz with NVIDIA Reflex Latency Analyzer, a 1ms GtG Fast IPS response time and sRGB 99% color coverage. Product Highlights: SCREEN SIZE: 24. 5" RESOLUTION: Full HD (1080p) 1920 x 1080 (DisplayPort: 360 Hz, HDMI: 240 Hz) TECHNOLOGY: Fast IPS ADAPTIVE SYNC: NVIDIA G SYNC CABLES INCLUDED: 1 x DisplayPort cable DisplayPort