I used this short-lived, cactus flower in my front yard as my latest model to demo the Pentax 50mm f1.4 at f1.4. The depth of field is very shallow so nearly everything is out of focus except what I almost wanted to be in focus. The flash wasn’t fired and no tripod was used. The photo was shot in the overcast conditions of that early Sunday morning. This Pentax is not exactly a macro lens but it could be used on big flowers and giant insects for closeup shots. I think the the Pentax 50mm f1.4 makes a great portrait lens.