@Sheiky
Thank you for your appreciation. I live in India.
Yup, i definitely have to get my sensor cleaned. Appreciate your help to identify the dust spots.


@Mattsartin
Thank you for your encouragement.


@Daniel Browning
I admire your depth of technical knowledge & your appreciation means really something to me


@Brendan
Thank you for the appreciation. I come to think of the logos only after you pointed out.
Next time will try to put your tip to practice.