One late in the morning, second-hand full frame camera looks at it or it's time to buy or upgrade its DSLR or mirrorless camera.
If you're reading this article, you're probably already familiar with the difference between full frame and crop sensor cameras. 35mm or full frame and crop sensor or APS-C. If you're not sure what to do, then look no further. Full frame cameras are based off the 35mm film standard while APS-C cameras use a sensor that's about two-thirds the size.
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The thing is, you can buy second-hand full frame cameras for crop sensor money. You can get a good Canon 5D Mark II, one of the most successful professional cameras ever made, for around $ 600. A Canon 5D Mark III, the camera I use, may have been a bit better than $ 1,300 if it's in good condition.
Consumer and Professional Cameras
As mentioned above, full frame sensors are used in professional cameras while crop sensors are used in consumer cameras.
- Build quality: Professional cameras are designed to take a beating. They are made of aluminum alloys, often have weather sealing, and generally work anywhere. Consumer cameras are meant for vacations and family photos.
- Better controls: Consumer cameras have lots of automatic modes, so you do not really have to think about taking pictures. Professional cameras give you a lot more manual controls.
- Multiple card slots: Multiple storage card slots let you shoot two cards at once, so all your photos are backed Consumer Electronics only
- Different lens mounts: Consumer and professional cameras have different lens mounts. In general, full frame lenses work on crop sensor cameras while the reverse is not true. If you have a lot of DX or EF-S lenses, this might be a dealbreaker.
- Better autofocus: Professional bodies-at least recent ones-tend to have better autofocus with more points than consumer bodies. 
Although, that's where things get a bit trickier and really, it depends on what two cameras you're comparing. For example, a 5D III has a 22.3 megapixel full frame sensor while the T7i has a 24.2 megapixel crop sensor. They both have the same ISO range of 100-25,600. The 5D III, despite being older, definitely has the superior sensor. On the other hand, the 5D II has a 21.1 megapixel sensor and an ISO range of 100-6400.
As a general rule, I'd say that any full frame camera is released in the last decade, if not as good as, at least in the same ballpark as a brand new crop sensor camera in most situations.
What You Lose By Buying Older Second-Hand Camera
It's probably clear by now that it's not too old or too badly beaten up , it's likely to be better in many ways than a brand new crop sensor camera. Again, things are not sewn up yet.
When you go with an older camera, you give it a lot of newer features.
- Wifi or Bluetooth connectivity
- A touchscreen
- A tilt-swivel screen
- 4K, high speed, slow motion video shooting
- A fast burst mode-which is an issue if you shoot sports or wildlife photography
These may or may not be things you'll miss. You therefore do not get the comfort and protection that comes with buying a brand new product.
Where to Buy a Second-Hand Camera
Buying a second-hand camera camera can be a bit risky.
My advice is to buy one of two places: your local camera shop or a reputable online marketplace like MPB.com and B & H.
With the camera out, you can go out and check out the cameras. The staff wants to be able to advise you on your options. They're looking for a way to try and sell you a broken camera. They might even offer some kind of warranty.
It's much the same with MPB.com and B & H. They are two of the most used camera marketplaces online. Anything they can, they've been tested and made sure it's in working order. MPB.com offers a six-month warranty while B & H offers a 90-day one.
Do you want to pay a visit to MPB.com or B & H but, in my opinion, it's worth it.  So, which to choose?
Which option you go with is up to you. Massively in the last two years or that a touchscreen is now considered an essential feature-don't worry. Good cameras are built to last and, if you buy one that's been vetted and has a warranty, you'll be alright. I think the manual controls, rugged build, and larger sensor are the tradeoff, especially if you plan on getting better at photography.
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On the other hand, cameras have come on in the last few years. If you want the latest features-and I can not fault you, wifi control is awesome-then you need to get a new camera. The latest crop sensor cameras are so go with which suits you best.