55 250 How much is the safety shutter after the 250mm end of the lens is turned on with the stabiliz

The safety shutter of a lens is generally the reciprocal of the focal length, which is 1 250 seconds at 250 mm, and in practice, if the light permits, it is better to increase it by one level to be on the safe side, that is, 1 500 seconds or more. What you said about shooting open-air cars, I understand that I don't know whether it is right to shoot moving objects, we use these shooting techniques when shooting moving objects: 1. Use high-speed shutter to shoot frozen pictures, 2. Use slow shutter to shoot out the movement track, 3. Use the following method**, shoot dynamic**, and there is the synchronous flash of the rear curtain, you can shoot the movement track, and there is a clear theme**.

I haven't really tried to shoot anti-shake at an open-air auto show, I think it's either to show dynamism or to show a frozen picture, you shoot moving objects to show anti-shake, I don't know if it makes sense, I'll try it in the future.

That's a quarter of 1,250 seconds, that's 1,30 seconds. If the body is in APS-C format of 7D or below, such as 60D and 550D, then the equivalent focal length should be multiplied, which is 400mm, then the safety shutter without stabilization is about 1 400 seconds, and after stabilization, it is 1 50 seconds. If the light is poor, the significance of stabilization, especially at the telephoto end, is still very significant.

And from the perspective of general use, if you want to turn on the image quality of the 250mm focal length lens without affecting the image quality with image stabilization turned on, it is better to be more than 1 100 seconds!

What brand of lens are you? Generally, the lens image stabilization is good, that is, the shutter speed can be reduced by one or two stops, and it is not particularly dependable.

UD lenses are only anti-dispersion, and purple fringing when backlit and blue fringing at the edge of the out-of-focus flare are reduced.

Shooting open-air auto shows without stabilization shouldn't be a big problem, but you can increase the shutter speed appropriately with a high sensitivity of 400 or 800.

The 75-300 is slightly better than the 55-250 in imaging, but it's not too much worse, and it's okay to say that the difference is not big.

ps:When did Canon come out of 85.。。 How much does that Zeiss stick cost.

That's a really hard question to answer. The sunset time is different in different places in the north and south, and the height of the surrounding buildings also affects the lighting conditions when the sun is slanting westward.

It was possible to shoot, but it didn't work. Recommendation 85

1.Generally speaking, the reciprocal of the focal length is the minimum guaranteed shutter, 1 300 seconds, you can do it, you don't need to stabilize it.

What is Mirror? Excuse me?

3.Image quality is not only the lens, but for these two heads alone, I believe that the smaller the zoom, the better the quality, and the fixed focus is better than the zoom.

It is the sound of the image stabilizer working, and this phenomenon is normal, not a malfunction. My 70-200 is L turned on the IS, and there is a sound when I press and hold the shutter to focus, and there is no sound when the photo is aborted and turned off, otherwise there is a problem. Therefore, I judge that this is a feature of the Jiamei Delay Energy telephoto lens (there is no sound for this kind of lens in 18-55 is), don't worry, feel free to use it.

The IS anti-shake unit works with noise, a creak, normal, Canon is relatively quiet, and Sigma will sound as soon as it is turned on.

No, it won't! It's a matter of volume.

There are two switches on the picture, AF-MF is autofocus, and the bottom one is the anti-shake switch.

The switch position on the diagram indicates that autofocus is on and stabilization is on.

Hope it helps!

There are two kinds - those with IS have stabilization, and those without IS have no stabilization! With the stabilization function, it can come in handy for special times! It's better to have stabilization than not to have it!

All with image stabilization,The old version 18-55 does not bring,But this focal length with no meaning,100mm with no image stabilization,Canon image stabilization is represented by IS,Nikon is represented by VR,It is clearly marked on the lens。

There are two kinds of 18-55, one without IS stabilization, but it has been discontinued, and now the basic 55-250 with IS stabilization on the market is 55-250 with IS stabilization.

These two lenses, with or without stabilization, are just like that.

Compared to its predecessor, the new second-generation EF-S 55-250mm F is II has been slightly improved in terms of appearance. According to Canon's official information, the surface of the lens uses a matte coating similar to that of the L lens, and the texture is significantly better than that of the previous generation. In addition, the second-generation EF-S 55-250mm F is II zoom ring has a focal length scale on the rear of the zoom ring that has been changed from silver gray to black, so it is easier to distinguish from the first-generation product.

This product is an APS format lens with an equivalent focal length of 88-400mm, and has the performance of optical zoom approx. To this end, Canon has incorporated the Image Stabilizer(IS) optical image stabilization system into this lens, which can achieve a shake compensation effect equivalent to a 4-stop shutter speed. The lens can even automatically determine the installation status of the tripod to prevent false compensation of the IS optical image stabilization system, which is more intelligent.

In terms of optical structure, the second-generation EF-S 55-250mm F is II also uses UD (Ultra Low Dispersion) lenses to ensure high image quality across all focal lengths. In addition, the coating of the lens is optimized to significantly reduce the occurrence of ghosting and glare. The aperture mechanism is designed with a circular aperture for a softer bokeh effect.

The new lens has a new UD (ultra-low dispersion) lens for relatively better image quality across the full focal length.

See if there is an anti-shake switch on the lens.