The problem of shooting high brightness objects with DSLR cameras

If the sunlight is strong, it is absolutely impossible to shoot directly through the viewfinder, one is to damage the eyes, and the other is to damage the image sensor.

But it's not always possible to shoot, and this is measured by glare. If it is strong and harsh, do not shoot. If you look directly at the sun with the naked eye, you can shoot anywhere (e.g. sunset).

It all depends on the intensity of the sun.

You can see what the filter does.

If the light is particularly bright, there is a possibility of burning out the optics, so if the sunlight is particularly strong, do not face it directly, and there will generally be no problems.

The filter is a single lens, and different filters are labeled differently, and the effect achieved is also different.

Photographing the sun in the early morning and at dusk does not damage the sensor, but if you shoot directly at the noon sun with a digital camera (which is unlikely), the sensor may be damaged.

Nowadays, lenses are basically equipped with a filter in front of the lens, and in the past, it seemed that there was a kind of camera, and the filter was mounted inside the camera (in front of the film), which is not well understood.

If you shoot against the midday sun, the sensor will be damaged. It doesn't matter if the sunset or sunrise doesn't have its own filter, you have to match it yourself. You may be talking about the coating of the lens, and a good coating can effectively reduce flare ghosting, such as the T* coating from Zeiss.

It won't be damaged, as long as it doesn't shine directly on the sun.

1. Improve the **compensation,This is used less,Because this operation is adjusted in the camera, I don't think it can be controlled by PS in the later stage,The adjustment of this parameter is through the built-in program of the machine to process the ** of the pro-shot。

2. ISO, improving it can make it brighter, but sacrificing image quality, if this value is beyond the range that the camera can accept, there will be noise in the picture, which is the same feeling as pockmarks, reducing the purity and effect of the picture, and the general entry SLR ISO needs to be controlled within 800 Mid-range 1600 or within, and the noise is basically invisible within 3200 in full frame.

3. Aperture, adjusting the aperture can make it brighter At the same time, the aperture controls the depth of field, in the vernacular, it is the degree of background blur, other parameters remain the same, the larger the aperture, the more serious the background needs to be.

4. Shutter speed, slow shutter speed can make ** brighter, but many specific conditions restrict the shutter not to be too slow, such as banquet photography at the event venue, in order to grasp the shutter speed of the person's movement should be higher than 100 1s; If the shutter speed is too slow, it will cause the image to shake and produce a paste, and the normal calculation of the safe shutter speed is shutter speed = focal length 1.

5. Flash, such as the effective distance of the built-in flash is 2m, and the effective distance of the external connection depends on the power, generally 4 10m, and the flash for photography beyond this distance is invalid, and the light can make the brightness of the subject significantly higher than the background in this range, so as to achieve the purpose of highlighting the subject and improve the brightness.

The Auto Brightness Optimization function analyzes the brightness of a subject when the subject's face becomes dim, such as when the person's face becomes dark due to backlighting or lack of flash, and automatically adjusts the brightness appropriately based on the shooting results. The Auto Brightness Optimization function is characterized by the ability to automatically adjust the appropriate brightness and contrast based on the shooting results during image processing.

Highlight tone priority is a camera metering that optimizes the highlights to prevent spills, and when activated, the camera's sensitivity is limited to ISO 200 1600 (which varies by camera). Highlight tone priority is useful for some white-dominated subjects, such as white wedding dresses, white objects, clouds in the sky, etc., and the above image is a schematic diagram of using highlight tones, which shows that the highlight area is well preserved.

I don't know if the bright spot you are talking about is a "dead spot" or a "hot spot"? If it's the latter, then don't worry, because the JPEG image compression algorithm itself will produce some noise, so it's not worth worrying too much; Of course, you can try to shoot again, and if you see a hot spot in the same area, or even the same pixel, it's still quite strange and should be cautious.

If it's unfortunate that it's dead, you can also try it a few more times to see the results. In short, it is still very annoying that the CMOS of a new machine has a bad pixel, which means that the machine still has some birth defects; But what is even more terrible than having this one bad pixel is the "fragile performance" caused by the inherent defects of the machine, that is, the bad areas that appear in patches or lines in the early days of use. Of course, this is an extreme situation, but as long as it is an industrial product, there must be a possibility of defective products.

So, if you're sure it's a dead spot, try to get another one. 10,000 steps back, just can't change, empirically speaking, if after shooting 3 months or 2000 shots, it is still that one bad pixel, maybe this bad pixel is relatively "stable", and the probability of continuing to spread will not be particularly large, so you don't have to be too entangled.

In fact, if you have a problem with the purchase for 15 days, you can return it for free, and you can change it again. About the bad pixels,There are too many possibilities,The following 3 dead pixels of the LCD screen are not considered quality problems,And there are dead pixels that have no effect,As long as you can preview** is enough。

It is normal for there to be no obvious bright spots in the dark As long as the points are not very bright and vivid, there is no problem, as long as you feel that you can't see it, it doesn't affect the normal shooting, and all the digital ** long time ** pictures will appear color bright spots

The biggest significance of the aperture lies in the control of the depth of field, the large aperture brings a shallow depth of field, which can better highlight the subject and fade the background, especially when shooting portraits and still lifes, the large aperture blurs the background to make the picture concise, look at what I shot with a relatively large aperture

The larger the aperture, the smaller the depth of field, and with a wide aperture, you can shoot with a beautiful background blur**.

In places where there is not enough light, it is necessary to use a wide aperture, high sensitivity, and slow down the shutter speed.

When the sun is shining outdoors, you need a large depth of field to shoot landscapes, you need to use a small aperture, a low sensitivity, preferably 100, and then increase the shutter speed, which can reach 1 8000 seconds with high-end cameras.

The aperture is like a pupil, a device that controls how much light comes in! The larger the aperture, the more blurred the background!