Four Thirds Zoom Lenses that are 35mm or wider and have a f/4 or faster aperture

" Great lens, no bubble effect at edges, and very nice for the price." bhphotovideo.com

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

"The SWD focussing is quite exceptional (as is the macro capability). If you have only one ZD lens make it this one." bhphotovideo.com

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

"Super sharp, wicked quality. Incredible for landscape photography!" bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

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

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

"This is the lens that will stay on my camera 90% of the time. Good all around lens." bhphotovideo.com

	Aperture	f/2.8			Length	93 mm
	Min focal length	11 mm			Weight	485 g
	Fixed aperture	No			Max focal length	22 mm
	Zoom range	2x			Diameter	75 mm

"Very sharp, fast and heavy. I use an SLR mostly to photograph flat art where I need a better tonal scale than smaller sensors." bhphotovideo.com

	Aperture	f/2.8			Length	88 mm
	Min focal length	14 mm			Weight	440 g
	Fixed aperture	No			Max focal length	54 mm
	Zoom range	3.9x			Diameter	74 mm

"It is excellent for all-around photography and its weather resistance on an E3 body make it great for use in adverse environments." bhphotovideo.com

Fixed aperture The same maximum aperture at all focal lengths

Wide aperture f/2

	Aperture	f/2			Length	123 mm
	Min focal length	14 mm			Weight	0.9 kg
	Fixed aperture	Yes			Max focal length	35 mm
	Zoom range	2.5x			Diameter	86 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

Great telephoto lens 180 mm

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

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

"Fun lens for architecture/interior design photography and other cool compositions where you get plenty of light. " bhphotovideo.com

	Aperture	f/4			Length	89 mm
	Min focal length	10 mm			Weight	0.5 kg
	Fixed aperture	No			Max focal length	20 mm
	Zoom range	2x			Diameter	86 mm