Every month we ask our talented readers to show off their skills with our Photo Challenge. For April 2012, we picked one of the toughest topics we've offered yet. Mixed light can be extremely tricky, but as always, you came through. The results offer a variety of scenic cityscapes to clever portraits. We've selected a few of our favorites to feature here with the captions as they were submitted by our readers. The official winner will be announced in the coming issue of Popular Photography, so keep an eye out for it!

By Josh Green

I used a large softbox to my camera's left and a red floodlight to accent and illuminate her blonde hair.

• CAMERA: Canon 5D MKII
• FOCAL LENGTH: 35mm
• SHUTTER SPEED: 125
• LENS: 35L 1.4
• ISO: 100
• APERTURE (F-STOP): 2.0