Olympus M.Zuiko Digital ED 40-150mm f:4.0-5.6 R 40-150mm

The OM System 40-150mm R is a tiny, dirt-cheap telephoto zoom that's perfect as a first step beyond your kit lens. It's sharp enough in good light and the autofocus is a gem, but the slow aperture and lack of stabilization mean it struggles indoors. If you find it for around $160, just buy it.

In decent light, this lens punches above its weight class. Center sharpness is solid throughout the zoom range, though things get a little soft at the long end and in the corners. The f/4.0-5.6 aperture means you'll be cranking the ISO once the sun starts dipping, and don't expect any subject separation magic, the bokeh is just okay. The MSC autofocus is a bright spot, it's fast, accurate, and quiet enough for video work. The real weak point is close-up performance. With a 90cm minimum focus distance and a paltry 1:6.25 magnification, this is not the lens for detail shots of flowers or bugs.

Stacked against a superzoom like the Tamron 18-300mm, the Olympus gives up a ton of range and versatility but wins hands down on size and weight. The Tamron is a do-it-all tank, this is a featherweight specialist. Compared to older DSLR zooms like the Nikon 16-85mm or Canon 18-135mm, the Olympus is in a different league for portability, though those lenses offer wider angles on the short end. If you're already in the Micro Four Thirds system, this is the no-brainer telephoto starter, but if you need one lens to rule them all, a superzoom is the better call.

Pricing on this lens is all over the map, with a wild spread from $160 to nearly $20,000 depending on the vendor, so don't get scammed. At the low end, which is where you'll find it from most major retailers, it's an absolute steal. You're getting a genuinely useful telephoto zoom for the cost of a nice dinner out. It's the perfect entry point into longer focal lengths without the financial guilt trip.

This is the lens you toss in your bag and forget about until you need it. The OM System 40-150mm f/4.0-5.6 R is tiny, weighs next to nothing at 190g, and gives you an 80-300mm equivalent reach on Micro Four Thirds. It's the classic 'second lens' upgrade from your kit zoom, and honestly, for the price it usually goes for, it's hard to argue with the value.

Image quality won't blow your mind, and the plastic build feels exactly like what it costs. But it's sharp enough in good light, the autofocus is quick and nearly silent thanks to the MSC motor, and the compact size means you'll actually carry it. That's half the battle with telephoto zooms.

Skip this if you shoot a lot indoors or in low light. The slow variable aperture will have you fighting high ISOs constantly. Also, if you need to photograph small details up close, the long minimum focus distance will drive you nuts. Look for a used prime or a lens with a dedicated macro mode instead.

This is the ideal second lens for anyone with a Micro Four Thirds kit zoom who wants to dip their toes into telephoto photography. It's perfect for travel, outdoor sports, or capturing your kid's school play from the back of the auditorium in good light. Just know its limitations: it's a daylight lens that won't get you close to small subjects.