I have a Nikon D3200 and sometimes it produces a lot of noise, even at ISO 100? Could this be the lens I am using? It happens with my 50mm f1.8 and my 70-300 Tamron, when I use extension tubes for macro shots? Thanks. Also, can I use 100mm of extension tubes on my 70-300 macro lens to increase magnification, or is this too much that it will ruin quality?
Added (1). (I normally just use 36-48mm extensions)
Read more: Lots of noise at low ISO?