My hope is to take clearer photos of birds closer up. I currently have a zoom lens that only goes up to 250mm so I am planning on getting one that gets much higher. From what I found, a lot of the photos that I liked used zoom lens. Two that I saw a couple times were 200-500mm and 150-600mm so I will look at those and see what I like. I have an older camera model - canon eos rebel t2i so I might also look into get a slight upgrade in camera. I am having a hard time choosing between dslr or mirrorless. Any thoughts?