How to choose Longteng 17-50 and 18-270? The novice is ready to enter the SLR, ready to enter the D7000, shoot his son and travel. I don't know which head is suitable.

The head of 17-50 2.8 is highly recommended!

Reason:

1, if you want to shoot a child, that's taking a portrait! What is the most important thing to take a portrait? The aperture is very large! ! ! You can take a photo with a blurred background and a prominent subject. The focal length of 50 is equivalent to the focal length of 75 on D7000, which is just the ideal focal length for portrait shooting. Moreover, the zoom ratio of the sub-head is much smaller, so the distortion is smaller, and the color reproduction and sharpness will be better than 18-270.

2. What do I need to shoot if I want to travel? The most important thing to shoot scenery is wide angle, that is, wide angle. Well, the wide angle of 17 is a little larger than that of 18, isn't it better? It is impossible for a real photographer to shoot scenery with telephoto!

3. The focal length of17-50 has covered more than 80% of the common focal length. Is it necessary to give up the large aperture for multiple telephoto focal lengths? ! Smart people don't do that! What is the telephoto used for? Shooting birds, sports meeting, basketball, volleyball, football, taking pictures of mm, and small aperture is useless in telephoto section. Look at the weapons used by reporters who shoot sports. They are all telephoto lenses with large apertures. Why do people have cheap small aperture lenses instead of tens of thousands of large aperture lenses? It's not that people are stupid, nor that they don't feel bad about using unit money, but that cheap goods are not suitable for this purpose! It's just a decoration!

For any lens and camera manufacturer, large aperture lenses are high-end products and high-end goods, which reflect the highest level of a factory. Even if you lose money, you should do as well as others! Because doing it badly is a great loss of face and market. What about the lens with large zoom and small aperture? It's publicity, but the most important thing is profit. His selling point is large zoom, and he gave up the image quality for zoom. Of course, he also has the degree of giving up, giving up too many harsh image quality parameters within an acceptable range.

Having said that, you should know how to choose!