It is possible for you to switch your specialization from operations to finance while pursuing an MBA. It's not uncommon to see students with a similar background to yours who have chosen finance as a specialization and have gone on to be successful. The key to making this switch is being able to effectively justify your decision. You can express that you have a solid understanding of operations, but that finance is now of greater interest to you. Additionally, you can explain that you don't want to limit yourself to just one area of expertise and that studying finance will help you become a more well-rounded manager. You can use the phrase "Jack of all trades, master of none" to emphasize that you want to have a broad range of knowledge and skills.
It is worth noting that pursuing Chartered Financial Analyst (CFA) along with MBA may be challenging. However, it depends on your personal preference and circumstances.
Many employees want to switch from manufacturing to finance but it is considerably difficult to switch from manufacturing to finance as both of them are completely different fields and don't have much in common.
You have to do very deep research about both these fields and gain a lot of knowledge about them in order to be successful. They have to put in a lot of hard work and efforts and also should be really interested in finance.
Many people pursue MBA after working for a few years to change their career options to finance hoping to get better opportunities while many also pursue CFA levels to increase their knowledge and expertise in the finance world. Getting this certification can be very helpful for switching to finance and get better job opportunities there. But this is just a gateway to be eligible for switching your career, but the end results will always depend on you.
You have to do a lot of hard work and gain knowledge and expertise in the fields to make yourself worth the job. You must be fully prepared and confident enough to get selected for the job.