[4] In his book, History of Journalism: A Legend of Glory, Prof. Santanu Banerjee mentioned, "His passion was to guide the oncoming photographers in the profession.

"[5] [citation needed] A Photography Unit was set up in the Indian Museum in 1964 for photo documentation of art objects.

Sen was undergoing treatment at a private hospital in Barasat near Kolkata, from 7 to 15 April 2011, as he had been suffering from retention of urine due to prostate enlargement and low haemoglobin count due to his previous heart problem with diabetes mellitus.

On the evening of 19 April 2011 Benu Sen was readmitted to the previous hospital at Barasat, for a pre-surgical preparation of prostate gland surgery.

[12] On 16 May 2011 Sen suffered from a serious chest infection, leading to the deterioration of his health and he was transferred to the Intensive Care Unit (ICU).