How to adjust the size of photos taken by the camera

How to make the photos taken no larger than 3m?

In the camera settings that come with the mobile phone, set the photo size to the minimum (for example, 2448×3440) and set the digital resolution to the minimum. You can also edit and cut the photos after shooting, as long as the square frames are around 3 m.

File size is at the expense of image quality. The compression ratio can be as high as 100: 1. JPEG format can easily compress files at the ratio of 10: 1 to 20: 1, and the image quality will not decrease. JPEG compression can handle realistic photographic works well.

For simple works with few colors, strong contrast, solid color borders or large solid color areas, JPEG compression cannot provide ideal results. Sometimes the compression ratio is as low as 5: 1, which loses the integrity of the picture. The reason for this loss is that JPEG compression scheme can compress similar tones well, but JPEG compression scheme can not handle the strong difference of brightness or solid color well.

Extended data

The file can be compressed to the smallest JPEG format. When stored in JPEG format in Photoshop software, the compression level of 1 1 is provided, which is represented by 0- 10. Level 0 has the highest compression ratio and the worst image quality. The compression ratio can reach 5: 1 even if the quality maintenance with almost no loss of details is adopted.

When saving in BMP format, you will get a 4.28MB image file. When saved in JPG format, the file size is only 178KB, and the compression ratio reaches 24: 1. After many comparisons, eight-level compression is the best ratio of storage space and image quality. The advantages of PG file are small size and good compatibility.

1. If there is an ACDSEE image viewer in the computer, open the image-click Edit-image size-and enter the value (generally, it is recommended to modify 500×375).

2. Many models have two or three different compression ratios to choose from, so the photo file sizes taken by cameras with the same number of images may be different. There is also the aspect ratio of the photo itself. Most cameras support 4:3 and 16:9, and now there is a photo resolution of 3:2. Because 4:3 is for the traditional computer screen, and 16:9 is for the resolution of HDTV or broadband TV, and 3:2 is for the proportion of 4R photos. Therefore, the same picture number may have different resolutions due to different scales.

How to set the size of photos taken by mobile phones?

Setting the size of photos taken by a mobile phone requires modifying the resolution of the camera of the mobile phone. Mobile phone cameras generally provide a variety of resolutions to choose from. In camera settings, you can choose the picture size from several default resolutions and picture scales. The following are the detailed modification steps.

First, turn on the camera that comes with your phone.

Second, find the settings button in the camera and click the settings button.

Third, find the resolution option in the settings and turn it on.

Fourth, select the required size after turning on the resolution option.

How to resize a photo?

The methods to adjust the photo size include PS modification, Meitu Xiu Xiu modification, computer photo viewer modification and drawing tool modification. The specific method is as follows:

First, PS modification.

1, select a picture.

Open PS, click File, and select the picture to adjust.

2. Click Modify.

Click on the picture in PS, a dialog box will appear, and then select the picture size.

Step 3 adjust and save

A pixel size box will appear. At this time, just enter the width and height of the picture you want. Then click Save. In this way, the size of the picture has changed.

Second, Meitu Xiu Xiu was revised.

1, import pictures.

Import a picture from Meitu Xiu Xiu and click "Size".

2, adjust the size

In the window that opens, resize it as needed.

Step 3 save the picture

Click "Save" to save the adjusted picture.

Third, modify the computer picture browser.

1, click the symbol.

After double-clicking the picture on your computer, click the symbol in the upper right corner of "...".

2. Click Edit.

Click the Resize Image option.

3, adjust the size

Click "Custom Size" and adjust the size as needed.

Fourth, modify the drawing tools.

1, right-click the picture.

Right-click the picture you want to modify.

2. Click on the drawing.

Hover the mouse in open mode, and then click Draw.

Step 3 resize

Then click Resize.

Step 4 turn down the picture

You can reduce the picture by percentage or pixel.

5. Click Save.

Click on the top left to save.

Tips for editing photos:

1, to avoid saving a bad photo.

One of the biggest mistakes of many novice photographers is to save a bad photo in post-processing. No matter how much time you spend on post-processing, you may not get the ideal image.

2. Imagine the final result.

Once you have a reliable candidate photo, the next step is to know what you want from it. This is an area that many beginners are struggling with, because they usually know little about the appearance of the image they want, which leads to the danger of post-processing experiments. Photographers try different post-processing methods and tools to make their images look better. Although experiment is a very natural learning cycle, if you find yourself at that stage, you need to set your own goals as soon as possible at this time, so as to release yourself from this dilemma.

3, aimed at stimulating emotions.

A good photo can arouse the mood of the audience. If you can do this, you will have a successful photo. But it is not easy to arouse someone's emotions with images, especially when dealing with ordinary subjects or shooting things that are not directly related to people's feelings. However, you can add some stories to the pictures, that is, convey your feelings when editing the photos.

4. The tone of "hearty and happy".

Most bright and happy images have enough brightness and contrast to make the overall image "popular", which means that the two most critical factors (besides highlighting your theme) are brightness and contrast.

5. The appearance of "darkness".

Although it is easy to make the image look bright and contrast, it is much more difficult to achieve a "dark and gloomy" appearance in post-processing due to many different factors. First of all, it depends largely on the image you start using. If you have a color photo of Zhang Mingliang, you need to lower the tone of the photo.

6. Emphasize the theme.

The purpose of protruding the subject is to guide the viewer's eyes to the most important part of the image. Sometimes it can be achieved by using visual guidance in composition, and sometimes it can be achieved by using specific post-processing techniques. Although your goal as a photographer is to use beautiful rays to highlight your theme when shooting images, it may not be enough to really show your theme, which is where your post-processing comes into play.

7. Don't overdo it.

Finally, don't overdo it! We seldom use the "saturation" and "natural saturation" sliders in Lightroom in post-processing, because they can quickly make the image look supersaturated, and are also suitable for sharpening, texturing, sharpness and defogging sliders. Improper use may lead to excessive photo processing, so we need to be careful when processing.

How Canon Camera Resizes Photos

Canon digital cameras are divided into IXUS series, POWERSHOT series, EOS series and Prima series. IXUS series is a fashionable digital camera, EOS series is a digital SLR camera, and Prima series is a small low-end series. All Canon cameras can set the photo size in the camera setting menu. Take Canon 550D as an example:

1. Press the "Menu" key on the camera to enter the menu, find the photo size setting, use the navigation key to make a selection, and press the setting key to confirm;

2. Press "Print" on the screen parameters to enter the parameter settings, use the navigation keys to select the photo size settings, and use the dial to adjust.

What should I do if the photo I took is too big?

Let the photos taken by mobile phone be less than 1mb (taking HTC mobile phone as an example);

1. Find the camera on the desktop and click Open. As shown in the figure:

2. Click "Open" to enter the camera. There is a gear icon in the upper right corner of the phone camera. As shown in the figure:

3. Click the "gear" icon of the camera and slide down to find the "resolution setting" item. Scroll down manually. As shown in the figure:

4. Scroll to the bottom and there is a [[ 10M resolution] setting item, which is the resolution setting item. After finding the setting item, click Open Setting Item. As shown in the figure:

5. After opening the setting item, enter the resolution setting. If you want to reduce the memory occupation of photos, you can use [[ 1M resolution] to take photos smaller than 1MB. As shown in the figure: