Hi, new to this site. I've had my DSLR for over a year, but am just now really starting to dig in, and became overwhelmed when I discovered the enormous amount of accessories/lenses there are!! What are your must-haves for a beginner doing portraits and B&W photography? I have a Canon Rebel T1i. My lenses include canon EFS IS 18-55mm f/3.5-5.6, 55-250mm EFS IS f/4-5.6, 50mm EF f/1.8, and 85 EF USM f/1.8mm. I have (for my 50mm lens) a lens hood and CPL & FLD filters. I also have a rubber lens hood and a tripod.