Most likely the DSLR camera you purchased came with a basic kit lens. Generally these lenses have a focal range of 18-55mm while the Sigma Macro Telephoto Zoom Lens has a range of 70-300mm. That gives you a lot more zoom than normal.
Sometimes called a flashgun, if you plan on becoming a serious photographer you are definitely going to want to invest in a speedlight flash. And while your DSLR camera has a decent built in flash, shooting in low light situations may leave you disappointed.
Sto-fen Flash Bouncer
If you’ve invested in a speedlight flash then this littleflash bouncer is a must have. It covers the front of the flash and dramatically diffuses/softens the lighting.
When shooting landscapes it is a good idea to have a UV lens lying around in order to prevent the bluish haze it can cast on your photos. The best part though, is that it doesn’t even need to be left lying around. You can leave this filter on your lenses as a permanent layer of protection.
Remote Shutter Release
If you are looking to do some long exposure photography or close up shooting you will definitely want a remote shutter release in order to prevent vibrations. Moreover, if you are planning on doing any self-portraits, it becomes a necessity.