hello. I have a 24-70 2.8 Nikon lens that I use for when we go on trips or out with my kids and I want to take their pictures. But lately it's just becoming too heavy for me to take and I end up leaving it at home. Any suggestions for an alternative lens that's lighter? I also use a 50 1.4 for portraits. But I need a decent every day lens that's lighter. I shoot both indoor and outdoor. I appreciate your help.