Being a food blogger is not very difficult. You prepare a recipe, take photos of the food and uploaded on the blog, but if the photos are not very good most people will not spend time to read the recipe.
You need very good food photos. Most of the food bloggers have a phone with a good camera or a compact camera, and, some, have DSLRs.
A modern smartphone has a lot of apps for better photos without a lot of effort. A smartphone does take very good photos in very good light, but, anything less than ideal outdoor lighting conditions, an expensive DSLR with great lenses can produce amazing photos. Add some post-processing and you will get some stunning images that will be nearly impossible to pull out of a smartphone.
You need to know what you want from your blog. If you want amazing photos like the ones in commercials, you will need to have an expensive camera with great lenses.
There is a universal truth: the bigger the image sensor, the better the image. A bigger sensor will capture more detail with wider dynamic range (the detail in dark and light areas), offer superior low-light performance, and focus more sharply on moving objects. With very small exceptions, all the phone cameras have a small sensor.
Controlling the zoom is an invaluable tool for composition and a way to capture a remote subject for all photographers.
Almost all compact cameras have a minimum 3x optical zoom, but so called ‘travel compacts or superzooms’ can go as high as 30x, offering the photographer a huge amount of creative control.
Compact cameras are also better at shooting close-ups – many have Macro modes that can shoot from 1cm away.
Smartphones tend to run out of power by the end of a day, but compact cameras can typically take between 300 and 500 photographs per charge.
If you are a more serious photographer who wants to experiment with shutter and aperture and develop your photography skills, it is worth buying a compact camera, particularly with manual control and a versatile lens.
If you are the kind of person who simply wants to take photographs and share them digitally a smartphone is for you.
If you already got a nice compact camera but got tired of it you may want to upgrade to a DSLR. Once you buy a DSLR you will buy a more than a camera. You will buy lenses, change your camera body every few years, buy filters, tripod, a small studio, etc. In time, you will invest a lot of money in your gear so you need to make money from your photography. (This is my way of thinking).
But the photos from a DSRL are just the best. With a DSRL and a decent knowledge of its features, you can create different effects that can bring a location to life, you can enhance a portrait or food.
The battery is great. You can take so many photos that you forget to recharge it. Interchangeable lenses give you more option (macro, tele, wide), the image has great quality, you have more options for shooting in low light situations, better dynamic range and color accuracy, faster shutter speed for shooting action or sports and other great advantages.
But before changing your gear see if you can improve your photos from another point of view (Tips for beginners), because photography is more than a camera.
If you already know all this and you want more from your camera (every camera has a limit), then you will think about upgrade. So go from a camera phone to a compact camera or an entry level DSRL. Read lots of camera reviews. People will explain the cons and pros of each camera. Check their blogs to see why they have problems. Maybe is not the camera is the blogger. Study, because you will make an investment in your future.
There are no bad cameras. Cameras differ in how well-suited they are to the types of photos you like to take and how easy they are to use. So you need to see which camera is best for what you’re trying to accomplish and how much money you are willing to invest.
Make small steps and less expensive. If you have a compact camera and buy a DSLR, keep the compact as a backup camera. You never know when you might need a really light and small camera.