If you simply pay the fine you are pleading guilty to the charge. This may at times seem like the easy and best thing to do, however pleading guilty can cause other problems for you. You will probably have points added to your driver's record and this conviction will be reported to your insurance company. Most likely your insurance company will raise your rates and this will cost you money now and in the future.
It is always best to fight the charges.
If you wish to discuss this with an experienced traffic ticket lawyer, contact Attorney Scott Miller in Alpharetta, GA. 770-408-1001