DSLR camera selection puzzle, want to know the advantages and disadvantages of SLR cameras!

In comparison between the two, the latter is more suitable for the requirements of the question.

At the moment, the 450D is the strongest focusing system in the entry-level SLR (and this is also due to Sony, haha :)The 450D sleeve is 18-55is, with image stabilization, which is very suitable for indoor shooting, however, if you want a little better quality, it is still a fixed focus head with a large aperture, because you can't use a flash to take pictures of small babies at this time, and a large aperture is often more suitable.

If you have enough money, just look at Sigma's 30 Of course, if the technology is better, it is also possible to pull the head. Just pay attention to the shutter speed when shooting (pay attention to the safety shutter).

How can it be better than these two? It's not a level machine at all. If you have to pick these two, it must be 450d, and there is a level difference on it

If Pentax and Sony also have SLRs, but I don't know much about those two. As for the same level of nikon or canon,It's up to your own inclination.,I'm more inclined to canon.。。。

I still love Nikon! Nikon is real! Imaging is sharp and durable!

It is recommended to buy a 45od, a set, and then buy a 50mm pullover, which is definitely enough for indoor shooting children. **It's also cheap, just 600 yuan. The total investment will not exceed 6500 yuan.

It is difficult to match lenses after buying the D40. It's better not to buy it.

Upstairs is right, it's good to shoot portraits with a 50mm fixed focus, and it's very cost-effective. But when it comes to machines, if you're not that tight on money, I advise you to buy the Canon 40D, or the Nikon D80The difficulty of matching the lens of the Nikon D40 mentioned upstairs does not actually exist, it is nothing more than the absence of an ultrasonic motor.

If you take into account the ** factor, you can still start. In fact, if you really play photography, there are more manual focuses, and automatic focus is not necessarily smooth.

Pros: It has only one lens, and it is used for both photography and framing, so the parallax problem is basically solved. When framing, the light from the subject is focused by the lens, reflected by the oblique mirror to the focus, and then through the top ridge"Roof prism"Note: Reflection allows the photographer to observe the scene through the viewfinder eyepiece, and the image is the same as the scene from the top, bottom, left and right, so it is very convenient to frame and focus.

When shooting, the mirror will immediately pop up, the lens aperture will automatically shrink to a predetermined value, and the shutter will open to make the film light-sensitive; **When the shutter closes at the end, the mirror and lens aperture reset at the same time.

Single-lens reflex cameras can be freely replaced with a variety of wide-angle, medium-focal length, telephoto or zoom lenses, and can also be fitted with close-up lenses, extension rings or telescopic cavities on the lenses as needed. In short, anything that can be seen clearly from the viewfinder can be captured by the camera.

Disadvantages: After adding the reflector chamber and the pentaprism, the fuselage is taller, thicker, and the weight increases; The moment the mirror pops up, there will also be mechanical vibration and noise; The time interval between pressing the shutter button and activating the shutter is also slightly longer than with other cameras; Using a small-aperture lens to frame and focus in a poorly lit environment will cause difficulties due to the dark viewfinder screen, which can easily cause focusing errors. Therefore, some foreign journalists have picked up cameras with head-up framing and double shadow reconvergence and focusing, and they think that this kind of camera is small and lightweight, bright and quick to focus, and it is easy to grab the lens.

Single Lens Reflex Camera (SLR Camera) is also known as a SLR camera. It refers to a camera that uses a single lens, through which the light hits the mirror, and the light is viewed through the reflex.

The so-called "single lens" means that the photographic light path and the framing light path share a lens, unlike the rangefinder camera or double reflex camera with independent lenses for the framing light path. "Reflective" means that a flat mirror in the camera separates the two optical paths: the mirror falls down during framing, reflecting the light from the lens to the pentaprism and then to the viewfinder window; When shooting, the mirror is quickly raised, and the light can hit the film or the image sensor CMOS or CCD.