When attached to a lens having a focal length of F, a 1.4Ã TC results in an effective focal length of 1.4ÃF, whereas a 2Ã TC results in an effective focal length of 2ÃF. Thus, a 400mm lens with a 1.4Ã teleconverter attached provides the same magnification as a 560mm lens, since 1.4 Ã 400 = 560. Similarly, a 400mm lens with a 2Ã converter produces the same magnification as a true 800mm lens. For birders, teleconverters can be a godsend.
The best handgun for law enforcement is one which fits the individual user. It should have no external safety which makes for ease of use.Everyone gets all fired up over caliber and âstopping powerâ. There is no such thing as stopping power itâs all about shot placement.est Answer. The best handgun for law enforcement is one which fits the individual user. It should have no external safety which makes for ease of use. Everyone gets all fired up over caliber and âstopping powerâ.
Ranging from capable undercover Glocks to micro-compact lightweight Kimbers, check out the all-time top pistols from the Guns and Weapons for Law Enforcement archive. For full reviews on any of the firearms â duty guns below, visit www.tactical-life.com/subscribe/guns-weapons-for-law-enforcement/ .vailable in either 9mm or .45 ACP, the STI Lawman was designed first and foremost as a duty and defensive pistol for law enforcement officers.