E14 tips to fix photo errors of any camera

Tips to fix photo errors of any camera or what lens ? Tips for fixing photos taken with any camera or lens Heres how to use Lightroom to fix 8 common camera problems, courtesy of MakeUseOf 1 Dust on

Tips to fix photo errors of any camera

or what lens ?

Tips for fixing photos taken with any camera or lens

Here's how to use Lightroom to fix 8 common camera problems, courtesy of

MakeUseOf:

1 Dust on the sensor sticks to the image

The red circled is the sensor on the camera

Dust and dead spots on the sensor are two completely different problems, but they

both have the same fix When replacing or removing the lens, the sensor is exposed

and dust can completely get in Some cameras have a self-cleaning feature for the

sensor, or you can clean it yourself with a dedicated dust blower (don't touch the

sensor directly as it will make things worse)

The white dots when the Visualize Spots mode is turned on in Lightroom is the dust on

the captured sensor - Photo: Tipsquirrel

If you forget to clean the dust before taking photos, the situation that the photos taken

are also dusty is inevitable With Lightroom, you can easily fix this error:

- Step 1: Open Develop mode -> select the Spot Removal Tool feature (or press the Q

key on the keyboard)

- Step 2: Select Heal

- Step 3: Mark the tick next to the words Visualize Spots below the image, drag the

slider next to adjust the white balance, the higher the better

- Step 4: Enlarge the image The tiny white dots are dust stains from the captured

sensor (pictured above)

- Step 5: Adjust the circle size to select the area that fits the dust particle size

- Step 6: Click (or hold down the left mouse button and drag the circle around

[including]) the dust stain

- Step 7: Repeat with other dust particles until done

The Spot Removal Tool feature will replace the object with details and colors blended

from the surrounding points With small objects such as dust or dead spots, we can

easily remove them without any further customization

You can copy and apply the above customizations to all other photos with Lightroom's

Sync feature:

- Step 1: Select the processed image

- Step 2: In the Film Strip view, hold down Ctrl (Windows) or Cmd (Mac) and select all

the remaining photos

- Step 3: Select Sync -> Spot Removal -> Synchronize

2 Dead pixels (Dead pixels, stuck pixels and hot pixels)

From left: Dead pixel, stuck pixel, hot pixel - Photo: Premiumbeat

With dead pixels, there is a similar fix

- Dead pixels: the points are completely damaged and no longer receive electricity, so

when the image is up, it will be black

- Stuck pixels can disappear over time and always show 1 of 3 colors: red, green, blue

or a mix of these 3 colors

- Hot pixels only appear when the sensor is hot (during high ISO shooting, long

exposure shooting, …)

Most cameras have firmware that handles hot pixels, some can even handle stuck pixels

or dead pixels Lightroom can automatically identify the pixels above and process it according to its own algorithm

If you have turned on Lightroom but can't see it all, you can use the Spot Removal Tool

in item 1 to fix the error yourself

3 Lens Distortions

From left to right: Types of image distortion, Vignetting - Photo: Quora, Lacolorpros

Distortion is a common phenomenon due to the optical design of the lens Image

distortion can be divided into four types:

- Barrel distortion: Straight lines in the image are bulging around like fisheyes or wine

barrels, common on wide-angle lenses

Pincushion distortion: Contrary to convex distortion, distortion is a condition in which a

straight line in an image is distorted inward, which is common on telephoto lenses

- Vignetting: Due to the physical design of the lens or by adjusting the angle of light

entering the sensor, the resulting image is darker in 4 corners

- Chromatic aberration: The different waves of light after refracting through the lens do

not focus on the same point, creating a color border running around the object in the

image (usually objects in bright areas, high contrast)

Lightroom supports multiple profiles for different lenses to automatically correct

distortion If your lenses are supported by Lightroom, you can take advantage of them,

otherwise you have to fix it manually

4 Correct the image that is bulging out or inward (Barrel/Pincushion Distortion)

You can check the image distortion of the lens by placing the camera in front of a large

brick wall and then shooting it, remember to have a tripod to keep the camera from

shaking

After taking the shot, you will see more or less distortion in the resulting image to

resolve in Lightroom Of course, this is a physical phenomenon due to the

characteristics of the lens, just inspection or post-production in certain cases, not a lens

fault

- Step 1: Open Develop mode -> scroll down to Adjustment -> Lens Corrections

- Step 2: Check the box Enable Profile Corrections, if your lens has a supported profile,

Lightroom will automatically apply it

- Step 3: If not, uncheck the box Enable Profile Corrections and then switch to the

Manual tab

- Step 4: Slide the slider below the Distortion section to the left to correct the distorted

image inward, to the right to correct the image that is protruding

- Step 5: If you slide to the right, select the Constrain Crop item so that Lightroom can

automatically process the white parts that may appear around the image border when it

is squeezed to straighten

Once you're done editing, you can save the setting as a preset for future use without

re-editing Also in Develop mode -> select New Preset -> enter preset name ->

uncheck all except Lens Corrections > Lens Distortion Select Create to create a new

preset

5 Adjust the image to be dark in 4 corners (Vignetting)

Lenses supported by Lightroom can also fix vignetting on their own If not, here's how

to do it manually

Also in the Lens Correction section -> select Manual In the Vignetting function, slide

the arrow on the Amount bar until the brightness in the four corners matches the rest

of the image

You can also save your settings as a separate preset (the same way as item 3) or save

the same preset with item 3

6 Correcting aberrations

Just check the Remove Chromatic Aberration box in the Lens Corrections section to

have Lightroom automatically remove the colored border around the object

To fine-tune the effect manually, switch to the Manual tab -> slide the Defringe slider,

use the eyedropper tool to select the colored outlines in the image, then slide the

Amout bar to remove them

Although it is a phenomenon caused by the lens, not all images will have aberrations so

there is no need to apply them to all imported images, just save to a separate preset,

apply only to any image ( how to create presets in item 3)

7 Image noise (noise)

Noise is the phenomenon of multiple points with random colors and different

brightness This usually happens when the sensor's light sensitivity is increased (such as

when setting the ISO to high in a dark environment) or when the sensor gets hot (such

as when shooting long exposures)

Most cameras enable noise reduction when shooting in normal format (JPEG) RAW

images are often more noisy, which can be handled with Lightroom

Image noise is of two types:

- Color noise: It's very annoying at first glance, but it's also very easy to fix Color noise

is simply a mixture of the colors of the surrounding pixels and does not affect the image

quality too much

- Luminance noise: the difference in the brightness of each pixel Removing

monochrome noise is to make the image smoother, the pixels are blurred

How to reduce image noise with Lightroom:

- Step 1: In Develop mode, select Detail -> find the Noise Reduction section

- Step 2: For JPEG images, the default values are set at 0, for RAW images, the Color

section is set to 25 Usually these values are enough to reduce image noise

- Step 3: Zoom in on the image, start sliding the Luminance bar to the right

- Step 4: Restore details and add micro-contrast with Details and Contrast sliders

- Step 5: In some cases noise can be re-created if detail recovery, you need to repeat

from step 3 until you are satisfied

Noise reduction works best when applied to individual images, or to multiple images at

once with the same light

8 White balance problem

Adjusting the white balance is essential for accurate color output While our eyes can

automatically adjust color temperature according to various light sources, the camera

sensor cannot do that Photos taken under fluorescent lights are somewhat "cooler" and

greener, in the sun, they feel hot and yellow Correct white balance correction will

remove those casts

Most people set the white balance automatically when taking photos, which is

necessary if you forget to adjust when the weather suddenly changes during the shoot

But auto white balance doesn't always give perfect results Sometimes the camera

automatically adjusts too much, the image is too cold or too warm, now you need to

correct it after shooting with Lightroom

-Step 1: In Develop mode -> select Basic -> White Balance (WB) is the first option

- Step 2: If it is a RAW image, click the drop down arrow to see all the white balance

preset available, select the most suitable settings for shooting conditions and see the

results

- Step 3: If it is a JPEG photo, you must adjust it by hand First, select the Eyedropper

icon (WB pen image)

- Step 4: Show out the image, use Eyedropper to choose the most neutral color area In

most conditions, the gray (or white) area

- Step 5: Click on the neutral zone to see the change, repeat it until satisfied with the

results

9 exposure issues

Surfing the photography forums, you will see many people complain of their cameras to

adjust the measurement speed too slowly, the image is missing or burning a little bit

compared to the actual brightness The simplest solution is to adjust the lighting

compensation to +1/3 or -1/3 If the direct adjustment is not convenient, you can

handle post -production with Lightroom

In Lightroom, each number on the Exposure slider corresponds to a light stop Pull the

slider to +1 to double the amount of light and vice versa

Exposure compensation can also be adjusted in Library mode, but instead of dragging

the slider, you will click the arrow to adjust it in steps, each step corresponds to 1/3

When you're satisfied, you should save it as a separate preset to apply later, the same

way as in section 3 If not, you can set up Lightroom to automatically apply exposure

correction to all images taken from that camera in Develop mode, as shown below

10 Change default values in Develop

There are quite a few settings that are recommended to be saved as separate presets

for future application, helping to fix problems caused by the camera (or lens) with a

single mouse click But instead of applying a preset manually, you can set Lightroom to

apply that preset to all photos taken from a camera in future imports, great for

adjusting exposure or reducing noise

- Step 1: Click Reset at the bottom of the Adjustment panel to make sure all other

settings are set to default Next, customize only the settings you need (for example,

turn the light up to +1/3)

- Step 2: Hold down the Alt key to change the Reset button to Set Default…, click it

(pictured above)

- Step 3: A dialog box appears, click Update to Current Settings to confirm (picture

below) The dialog box with this change warning cannot be undone, but that does not

mean that they are applied permanently, just cannot be undone with the Ctrl + Z

keyboard shortcut

This change applies to each image format and camera model but not to lenses, which

means that if applied to JPEG images, RAW images will not be affected, which is great

for working with many other cameras together

To reset to the original factory settings, click the Restore Adobe Default Settings button

All of the above tips aim to overcome limitations on cameras and lenses in a simple way, saving you time so you can comfortably capture your favorite photos Good luck!