Four Thirds Zoom Lenses

"Excellent lens for sport and fast action. The external zooming makes it a bit fragile if you're shooting in crowds or potentially damaging environments." bhphotovideo.com

	Fixed aperture	No			Max focal length	200 mm
	Length	157 mm			Diameter	87 mm
	Weight	1 kg			Aperture	f/2.8
	Zoom range	4x			Min focal length	50 mm

"I use this lens on a lot of landscape photography. I also shoot regularly from helicopters, both air to air shots of aircraft as well as landscapes." bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

	Fixed aperture	Yes			Max focal length	14 mm
	Length	119 mm			Diameter	86 mm
	Weight	0.8 kg			Aperture	f/4
	Zoom range	2x			Min focal length	7 mm

"I found the lens solid in feel, easy to change, quick enough focussing" bhphotovideo.com

	Fixed aperture	No			Max focal length	18 mm
	Length	74 mm			Diameter	79 mm
	Weight	275 g			Aperture	f/4
	Zoom range	2x			Min focal length	9 mm

"It provides outstanding sharp photos at long distances; with the f2.8 stopping action (surfers; shore objects from a ship a mile or two off shore). I have used it at sporting events and have even used it for some astronomy work (great for the moon)." bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

Great telephoto lens 250 mm

	Fixed aperture	Yes			Max focal length	250 mm
	Length	277 mm			Diameter	125 mm
	Weight	3.3 kg			Aperture	f/2.8
	Zoom range	2.8x			Min focal length	90 mm

"Top notch lens without any real weakness, great for portraiture, landscapes, sports and more. Very Sharp, exceptional full-metal build." bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

Wide aperture f/2

	Fixed aperture	Yes			Max focal length	100 mm
	Length	214 mm			Diameter	97 mm
	Weight	1.7 kg			Aperture	f/2
	Zoom range	2.9x			Min focal length	35 mm

"It's very light (not aluminum like the 70s) but the depth of field is surprisingly minimal for a lens of this size" bhphotovideo.com

	Fixed aperture	No			Max focal length	42 mm
	Length	61 mm			Diameter	66 mm
	Weight	190 g			Aperture	f/3.5
	Zoom range	3x			Min focal length	14 mm

"Light weight and easy to handle. Imagages are very sharp and bright." bhphotovideo.com

	Fixed aperture	No			Max focal length	150 mm
	Length	72 mm			Diameter	66 mm
	Weight	220 g			Aperture	f/4
	Zoom range	3.8x			Min focal length	40 mm

"I am an avid amateur photographer and have found this lens to fill most of my needs. Although this lens is a bit heavy, the quality of craftmenship is very apparent. The image color quality is outstanding and it maintains detail out to the image margins even at 12mm. Good macro capability as well." bhphotovideo.com

	Fixed aperture	No			Max focal length	60 mm
	Length	99 mm			Diameter	80 mm
	Weight	0.6 kg			Aperture	f/2.8
	Zoom range	5x			Min focal length	12 mm

"I am delighted with this 140-600mm lense as it enables me to get close shots of birds and wildlife and has great clarity and sharpness for a moderately priced lense." bhphotovideo.com

Great telephoto lens 300 mm

	Fixed aperture	No			Max focal length	300 mm
	Length	127 mm			Diameter	80 mm
	Weight	0.6 kg			Aperture	f/4
	Zoom range	4.3x			Min focal length	70 mm

"The lens is much better than the stock lens. It gives great depth of field when on the end of the lens and has a nice reach." bhphotovideo.com

Great zoom range 10x

	Fixed aperture	No			Max focal length	180 mm
	Length	85 mm			Diameter	78 mm
	Weight	435 g			Aperture	f/3.5
	Zoom range	10x			Min focal length	18 mm