I tried those janscos and I found them not suitable. It really depends on what camera and lenses you are using. My main light source is similar to this listing( I like it because its dimable and it produces much more light than 2 janscos:
http://www.ebay.com/itm/CN-160-LED-...em4618deb9a4
http://www.ebay.com/itm/CN-160-LED-...em4618deb9a4




















