The difference between entry-level SLR and mid-range SLR

If you hold 80d (Canon mid-range SLR) in your left hand and 200d (Canon entry SLR) in your right hand, you will find that the left side is much heavier than the right side, with a difference of about 200g, which means that 80d is about 3 eggs heavier than 200d.

But both 80d and 200d are APS-C frames, which are similar in appearance and shape, and the photos from continuous shooting are similar. Why is there such a big difference in weight? Because the mid-range SLR is between entry-level and professional-level, it already has the performance of some professional cameras. In order to support these professional performances, it is necessary to have appropriate hardware equipment support. The gap between these details and hardware equipment brings about the quality gap between the two.

The gap is reflected in the performance of the framing system and focusing system, as follows:

0 1 viewfinder system

The fundamental reason why SLR is called SLR is that it has a reflector. High-end SLR uses pentaprism to reflect light, and entry SLR uses pentaprism. The influence of pentaprism and pentamirror on framing system can be divided into two points:

Visual field rate? The visual field ratio of pentaprism is 100%, and the visual field ratio of pentaprism is 80%-95%, that is, the picture seen by pentaprism is incomplete.

Light loss? A good pentaprism has no light loss, while a pentamirror does, that is, the picture seen by the pentamirror is dark.

Both pentaprism and pentamirror realize optical framing through two reflections of light. The difference is that the pentaprism is finely polished with optical glass, and the light is reflected inside the glass without loss. The pentamirror simulates a pentaprism through the combination of several mirrors to realize the reflection of light. The light needs to be refracted and reflected between the mirror and the air (hollow), and there is energy loss, so the picture of the pentamirror will be dark.

The following figure shows the structure of the two, with a pentaprism on the left and a pentamirror on the right.

02 focusing system

The focusing system of entry-level SLR is generally weaker than that of mid-range SLR.

For entry, Canon is usually 9 o'clock, Nikon 1 1 point; Mid-range model, Canon 45 points, Nikon 5 1 point.

If you are a static still life such as scenery and portraits, it has little effect on the number of focal points, but if you shoot dynamic content such as sports and news, more focal points mean stronger ability to focus, which is more convenient for users to compose pictures.

03 others

In addition to focusing and framing, there are many other differences between mid-range SLR and entry-level SLR. For example, the shutter speed of mid-range SLR can reach 1/8000 at the earliest, while the entry SLR is usually1/4000; The middle distance from continuous shooting is faster, supports richer RAW resolution and is more stable.

In a word, the mid-range SLR is a semi-professional camera, and its comprehensive performance is closer to that of high-end cameras, with higher stability. If you have high professional requirements and not a lot of funds, mid-range SLR is a good choice; If you are just an ordinary photographer, an entry-level SLR is enough for daily use.