I just use a small headlamp, or a Photon Microlight that i clip to either my cap/hat brim or to my eyeglasses. You can get creative and hang most small headlamps inside of your tent, tarptent, or under your tarp to act as a lantern if you need one.
A headlamp puts light where you need it, i.e. precisely where you are looking. To my way of thinking this makes more sense than a lantern.
Having said that, if you feel that you want a lantern, try a LED lantern like the Brunton Glorb (about $30) or an Essential Gear identical model for $20. Both models have two levels of light output - viz., low and high.
Try www.campmor.com as a reputable on-line source for one. I've added heavy duty, kitchen-type aluminum foil to 180 degrees of my Glorb so that light only comes out a 180 degree arc instead of 360 degrees. I just used some small bits of tape to afix it to the Glorb. It's easy to remove the foil for complete are lighting. We only use it for power outages at home.