Standard Lens

Brand

• (no filter) 

  Optoma (1) Viewsonic (2)

Brightness (lm)

• 7000-8000 (3) 

  4500-5700 (4) 6000-6700 (3) 8000 or higher (3)

Ratio

• (no filter) 

  1.00-1.50:1 (3) 1.51-2.10:1 (3)