What is the about ERR 99

Hi dm.krishnalal,

Error 99 is for more then one issue. First try different memory card, if is still err99 try clean contacts on camera and also on lens. If still err99 try different lens.

If you can try memory card and lens on different body to find out what can be problem.

If after these you still get error it can be also battery problem or ( hopefully not ) shutter issue.

Regards

Rob