My wife has wanted a DSLR for years.SLR represents "single lens reflection ".SLR camera allows you to view through the lens using a viewfinder or LCD screen-So you can see what images your camera will capture.The SLR camera also allows you to use a long focus lens with a first-class swap lens.Digital SLR cameras use digital sensors instead of film to capture images.The resolution of digital SLR cameras is constantly improving, and there are now more than 20 pixels of sensors in the consumer digital camera market.Prices have also dropped significantly as the performance of digital SLR (DSLR) cameras has improved.You can buy a new DSLR camera for less than $500, which includes a high quality lens with features.It is worth noting that many DSLR cameras do not include lenses.This is usually listed as "camera body ".If you buy a camera without a lens, you need to spend $100 or more to buy a high quality lens for your camera.The first idea I found for a cheap DSLR camera was to look at the used camera.A lot of people buy expensive cameras or buy one as a gift but don't use them much in the end.Others get a new camera and no longer need their previous camera.This resulted in a large number of second-hand digital SLR cameras, many of which are in good condition.One of the benefits of buying a used DSLR camera is that many cameras include lenses, camera bags, extra batteries, and other items that come with the camera.Some people want to sell all their camera products at the same time.Buying a camera with accessories can be a good deal.I read some product reviews for 5 to 8 year old camerasThese are easy to find for sale now.I 've picked several models that look promising: Canon XTi and Nikon d90.These are countries.of-the-Art, expensive camera a few years ago.The old one is cheap now.I found a batch of used Canon XTi and Nikon D90 digital SLR cameras on eBay.Some cameras are priced at $125 (Buy it now )!I found a Canon XTi Digital Rebel camera body in an auction with lenses, extra batteries and other accessories on the body.I bid $180, up to $220.Unfortunately, in the last second I bid too much.The Canon XTi kit costs $235.There are many used cameras on EBay for saleI can easily find a lot if I stick to it.The Nikon D90 on EBay is priced much higher than canon XTi's.I decided to check any used cameras on Craigslist.I found a Nikon D80 with a lot of accessories for $235.Although the D80 lacks some of the features of the D90, it seems like a big deal, but if its cost is reduced by $100, it may be worth compromise.I also found some newer models for $430, such as the Nikon D3100 kit with lots of accessories on it.Some old models do not provide realLCD display timeOld digital cameras use slower memory and media.From the number of shutter times, the life of the SLR camera is fixed --My biggest fear is that I will spend hundreds of dollars on a used camera for my wife and she won't like it because it's not responsive enough or because the LCD display doesn't show a live preview.It is very frustrating to press the button to wait for the camera to respond.Once I tried to take pictures of my son in the parade.They didn't move that fast, but he was gone when my camera took pictures!I want a camera that can take a few photos per second, and when I press the shutter button, it takes pictures right away.I decided that unless you have the opportunity to try it out before you buy a used SLR camera, buying a used SLR camera can be a huge waste of money.I 'd better save for the newer camera instead of buying an old one that might not be as useful as we thought.Next, I focused on the newer DSLR cameras designed over the past two years.These models support fast Type 10 flash cards and feature high-resolution, real-time preview LCD displays.The response time is also very fast.However, money is very important.I need to find a cheap new SLR.I found a Nikon D3100 at Best Buy.Even better, they sold out.Why better?They also have display models. I asked if I could buy them.I think I can save at least $50 from a clearance price of $450.The store manager said she needs to be sure whether the camera is offered by Nikon or owned by Best Buy and can be sold to me.In the meantime, I continue my research.Product reviews show that Canon EOS Rebel t3 I is superior to Nikon d3100 in almost all respects.Unfortunately, the price of Canon t3 I bought by Best Buy is $550 and it is not a monitor model.I checked the price of Canon t3 I on Amazon.com.I had to click a button to show the price for less than $450 including free shipping.The manager at Best Buy called and told me that I could buy the Nikon D3100 monitor model, but I didn't even bargain.I have ordered Canon t3 I.EBay and Craigslist have many used digital SLR cameras between the ages of 5 and 8.The extra price for buying a new camera may be worth it --.