My Canon 50 1 8 is not bad

<> there is a problem with the lens, the picture above is the son of a 60d hanging small spittoon shooting**, indoor, the aperture, the center focus.

Mine occasionally misses focus, but it works fine when I let go of the shutter and press it again to refocus, and the manual focus is also very good.

If, as you said, you can only start to see things clearly when you receive them, and you use the center focus, and if you use the surrounding focus points, you must at least receive them to see things clearly, then what is it called a portrait fixed focus?

And seeing that you are not a novice, you have taken more than ten or twenty photos and none of them can be seen clearly, so it is unlikely that you are out of focus.

There is definitely something wrong with the lens.

FYI.

Who told you that the bottom end of the fuselage can't control this head, you can cut him first, this fool doesn't make a draft, how can the same electronic interface not control something like a small spittoon. However, as long as Canon comes out of the EF-mount SLR, there is no pressure to control any EF-mount lens.

Double-check to see if it has been dismantled. It is suspected that there is a problem that the optical axis is inaccurate, which has to be checked by Canon after-sales service.

Don't shoot so close! The closer you get, the more mushy it gets! This is so normal!

It's a little farther away! Basically, it will be clear and sharp when you use it! There will definitely be cases of out-of-focus!

This is going to be corrected by yourself! I think the so-called out focus has something to do with personal photography skills! With 50 I'm using a manual focus point!

Never use AF points! This is because when using AF points, it is common to get out of focus!

It shouldn't be broken, it's likely that the machine is out of focus, and this body is more than enough with this lens.

There may be a problem, but the description is not certain.

Uh.........This is a very difficult .........It's a great ......... to be able to use it like thisFall .........

If you have this problem, you must go to the official Canon store for repair, because basically there are parts that cannot be obtained, and the official may not have them.

First of all, the focus ring is stuck and it can be caused by the debris of the parts, or it can be caused by the internal deformation of the lens, and if it is the latter, the problem is serious.........It may not be possible to replace it (generally you can't buy internal parts, otherwise you can make your own lens.........

Secondly, the problem with err 01 should be the communication problem caused by the internal wiring problem of your lens, and see that the contacts at the bottom of your lens are not scratched or anything, so you can only open and check.

Finally, your lens problem is a serious .........Generally, Canon officials may not be able to repair your lenses, if you just reinstall the lenses, it may be fine, but it is difficult to say, because these are not operated by technicians in the repair station, and this kind of precision equipment is performed by specialized technicians. You can first ask Canon customer service if it can be repaired.

Whether it can be repaired depends on whether it can be repaired ......If you can cultivate, you will definitely be able to ...... wellYours is a big problem, you can only turn to the official for help, and generally small places simply can't buy parts, especially your lens part. These are all Canon's core technologies.

It's hard to say whether the motor will be bad or not, this can only be tried, but it is obvious that there is no way to test ......... now

If it can be repaired, it will not have any impact after repair, because they are all precision instruments, and there will be no impact after repair.

**If you only replace the focus ring, the motor (assuming it needs to be replaced), the wire, is about 1000 yuan-2000 yuan (I don't know how much the motor is, it may be very expensive.........My 85 focus motor costs 8000 yuan!! And the 70-200 is only 600 ...... motor）

Lenses are definitely not .........expensive if they can be replaced

Can the motor still move? This is more serious, maybe the cable falls off, the focus motor is damaged, or the internal parts are deformed, it is certain that it can be repaired, but the quality is not guaranteed, and the price is not cheap.

Call the official ** and ask, this is the safest Oh, 4006222666 this is Canon's official ** You can consult it, the specific maintenance point where you are, check it, in order to know whether it can be repaired or not.

It is 50 that meets your requirements

Canon 550D is a half-frame SLR body, because of the small size of the image sensor, the ** angle of view shot by the lens is not the angle of view shot by the actual real focal length, and the focal length should be multiplied by a coefficient, Canon is. As long as you shoot at 550D, the focal length displayed on the lens must be multiplied.

So in the conventional sense, the 85 focal length is suitable for portraits, so if you use 50 fixed focus, the actual equivalent focal length is 80, and 85 fixed, the actual equivalent focal length is 136

When you actually use it, you will also feel that 50 is more suitable for portraits, and with 85 (actually 136), when shooting portraits, especially full-body portraits with backgrounds, the distance will obviously be far away.

Therefore, it is recommended to set 50, which is stronger than not only the aperture, but also the workmanship and comprehensive quality.

Basically, except for the focal length, it is not as convenient as 18 55, and in other aspects, large aperture, bokeh, image quality, etc., is several grades higher than 18 55.

50 makes up for the shortcomings of 18 55 in terms of image quality, aperture, etc.

The Sigma 50 is sharper than the original Canon, has a better reputation, and is also higher than the original, more than 3000 in the first generation, and nearly 6000 in the second generation, and the Sigma 50 is very common. Recommend Canon's original 50, mainland licensed about 2600, Hong Kong parallel goods about 2000.

That's how you calculate, Canon's full server and half width are converted. You use 85 times, that is, the high sense to drive to 800 is trembling. With a telephoto of 136, you need a lot of space and good light to shoot goods, and you have to have a shelf, otherwise you won't be able to hold it at all.

50 is 80, 80, close to 85, which is the best focal length and aperture for shooting portraits. If the light is low, it can also ensure that you will not hold the film in your hand. If you talk about portraits, 136, 80, 136 are longer, and the aperture is larger, and the bokeh will not be much worse.

It is recommended that the focal length of a 50 half-frame machine be multiplied by 50*, which is close to the requirements of portrait shooting, and 85 can obviously only shoot half a body.

Personally, I think if it's 550D, use 50, which is not only cheaper but also can give full play to the advantages of the lens. The other two, if the landlord has the idea of changing the fuselage, then you can consider it.