I'm still new when it comes to proper shooting techniques. I've been using a mirrorless (e-pl1) for 3 years now. Just bought an e-pl7 as an upgrade this week. It seems that whenever I try to take a self portrait in my room (it's not a brightly lit room) at night, the picture will 100% turn out blurry. It feels like the shutter takes a while to take a snap, too. This never happens when taking pictures during the day. I've tried setting the ISO to 1600 (I usually take night shots at 800 ISO, mostly at f3.5 in Aperture mode), but the result is the same. I get blurry shots 6/10 times. Is there anything I can do about this?