How to use Android tablet as a ebook reader?

If the screen resolution is high enough, there should be no difference between a tablet and an e-ink ebook reader (I read in several reviews). However, when I use my Android table (2560x1600) for reading by Adobe Acrobat, my eyes get tired soon comparing with Amazon Kindle. I tried several bluelight filter, but it makes the color unnatural. What are the best apps/ways to use an Android table for reading colorful PDF documents for long time without eye strain?