White dots on long exposure shots? - Xiaomi Mi A2 / 6X Questions & Answers

I took some pictures at night, and discovered some white white dots on them. Is that normal on 32sec exposure with ISO200? With more ISO there are a bit less white dots appears. Here's a sample, I added some brightness to it, so they are even more visible.
https://imgur.com/Ui7qi4v
edit: I used secondary lens for this shot, with primary lens there are rarely a few.

its just sensor noise, cant do much about it. If possible take multiple photos and try to average them in photoshop

Related

Need camera help

i have the kodak easy share C1013 which has 10 mega pixels apparently. but the problem is my phones comes blurry what ever i do, even if the flash is on for some reason, but this only happens indoors and even if the lights are on...if anyone here is good in camera, can they help me pls
http://forum.xda-developers.com/showthread.php?p=7783291#post7783291
see the third photo on this thread i clicked it with the flash on
Well the third photo the picture is recular out of focus. The problem with Point and SHoots is that they take a while to focus (especially in low light) and (this with all cmeras) the shutter speed has to be much lower for the sensor to gather more light...and P&S's have tiny sensors compared to an APS-C, CMOS, ir a full frame sensor. But you should just retake that shot making sure the camera is focused and maybe add some more light on the subject to make it easier for the camera.
Are you using a manual setting? Have you dropped the camera? How close are you shooting?
wdfowty said:
Are you using a manual setting? Have you dropped the camera? How close are you shooting?
Click to expand...
Click to collapse
i have tried both manual and automatic, but both come out blurry. the camera has never been droped and this occur only indoors even if there is plently of light.
jaszek said:
Well the third photo the picture is recular out of focus. The problem with Point and SHoots is that they take a while to focus (especially in low light) and (this with all cmeras) the shutter speed has to be much lower for the sensor to gather more light...and P&S's have tiny sensors compared to an APS-C, CMOS, ir a full frame sensor. But you should just retake that shot making sure the camera is focused and maybe add some more light on the subject to make it easier for the camera.
Click to expand...
Click to collapse
i alway focus my camera properly, when ever the focus is right, the box thing becomes green. how to lower the shutter speed i will take some photo with plenty of light. also the the the third photo was taken in a room full of light and also with the flash on
You mentioned that the room is well lit. But perhaps you are standing in front of the light and casting a shadow on your subject?
You mentioned that the camera has locked focus before you fully pressed the shutter. But with inadequate lighting, perhaps the camera is focusing on the wrong spot?
Some cameras have a light that comes on when you half-press the shutter to help the camera focus in low-light. If your camera has this, then make sure you enable it.
Also, if you didn't crop the photo, then perhaps you are holding the camera too close to your subject. Try backing off at least 2 or 3 feet. Then crop the photo with an editor to exclude anything you don't want.
You could also check settings for your focus point. It could be set to spot focus off center, I've seen it before.
ohyeahar said:
You mentioned that the room is well lit. But perhaps you are standing in front of the light and casting a shadow on your subject?
You mentioned that the camera has locked focus before you fully pressed the shutter. But with inadequate lighting, perhaps the camera is focusing on the wrong spot?
Some cameras have a light that comes on when you half-press the shutter to help the camera focus in low-light. If your camera has this, then make sure you enable it.
Also, if you didn't crop the photo, then perhaps you are holding the camera too close to your subject. Try backing off at least 2 or 3 feet. Then crop the photo with an editor to exclude anything you don't want.
Click to expand...
Click to collapse
i tried what you said and see the pics i uploaded, but still i dont find the quality of a 10 megapixel camera tho
For those types of pics you need a camera with a macro feature/setting.
good day.
The 3rd and 6th photos are blurry because your subject spans a large depth of field. In those two photos, the base of the iPhone is close to your camera while the top of the iPhone is far away. The distance between these 2 points is too large for your camera to handle (especially under those lighting conditions). Your camera needs a smaller aperture setting than it can handle for those shots.
(In the 3rd photo, the camera seems to have focused on the farthest point. Notice that the top is in focus but the bottom is blurred. In the 6th photo, it's the opposite. Notice that you can clearly see the cracks in the cardboard box on the bottom while the top is blurred.)
The others look on par with what you should expect from your camera under those lighting conditions.
Remember that more megapixels doesn't mean better quality.
The following is just a tip. Lighting is important. Try to take your pictures with sunlight. Don't depend on your camera flash. If you use your flash aimed directly at your subject to compensate for lack of lighting, your pics will look terrible more often than not. (I see from the reflection off the rear of your iPhone that you're using a lamp as your primary source of light. That's not adequate...)
Shallow depth of field is not a bad thing with good lighting. It allows you to highlight certain aspects of your subject. See the following examples.
1st Pic, 2nd Pic, 3rd Pic
The 2nd pic draws your eyes to the bottom right corner while the 3rd pic draws them towards to the top left.
These were also taken indoors with a 10MP camera. But I used my Nikon D60 with SB-400 speedlight to bounce the flash off the ceiling.

[Q] What are the best camera settings for low-light situations?

I'm coming from an LG G2, which had a great camera in low-light situations. I noticed a knock on some reviews for this camera in same situations, and I tried it out a bit and my pics look a little grainy. What are suggested settings for the camera? Thanks.
RCizzle65 said:
I'm coming from an LG G2, which had a great camera in low-light situations. I noticed a knock on some reviews for this camera in same situations, and I tried it out a bit and my pics look a little grainy. What are suggested settings for the camera? Thanks.
Click to expand...
Click to collapse
First, to remove the noise from your photos i suggest you to use the app 'A Better Camera' which has a good noise reduction process, once you downloaded it go in night mode, then go to 'other settings', then go to "shot mode settings", "night", "overnight processing", set noise reduction to maximum and shadow elimination to none, and tick the saturation check.
If you prefer Sony's camera use these settings in manual mode:
Exposure: one or two bars below value of 0
WB: auto
Resolution: 15,5 mpx
Focus mode: multiple autofocus (i think that's what it's called in english)
ISO: This is the most important setting. You can set it to 100 or even 50 to avoid noise and artifacts caused by heavy postprocessing by software. But, the lower the iso, darker the image will be. So on a sunny day it can be 50 od 100, On a cloudy day, a bit higher and in night photos 800.
Metering: multiple
Focusing: When you want to take photo, put object you want to take photo of in the middle and half press shutter button. When squares turn blue on places you want focused, keep shutter half pressed and you can then move your phone to left, right, up or down and not losing focus. That way you make your composition. When you think you have your scene set up, finally press the button all the way.
(i copied these text from the user Istic).

There are black spots on the camera viewfinder when taking photos at night

There are black spots on the camera viewfinder when taking photos at night, and the highlighted part of the photo looks whitish. Does anyone know the possible reasons?
Your phone may automatically increase the camera's ISO to improve the brightness of a shot taken at night. This amplifies the digital noise and granularity of the photo.
When taking a photograph or video, remain in a well-lit environment for optimal effects, or turn on the automatic light compensation feature located in the upper left corner of the screen.To enable light compens ation when using the rear camera, set the flash to always on.
[email protected] said:
Your phone may automatically increase the camera's ISO to improve the brightness of a shot taken at night. This amplifies the digital noise and granularity of the photo.
When taking a photograph or video, remain in a well-lit environment for optimal effects, or turn on the automatic light compensation feature located in the upper left corner of the screen.To enable light compens ation when using the rear camera, set the flash to always on.
Click to expand...
Click to collapse
Thanks for your reply. I tried with this, it is reallly useful.

Telephoto camera not always active

I tried to see which camera is which by covering them and the telephoto doesn't seem to be active.
Once in a while in zoomed mode it'll blink to my finger but it's usually using the regular camera. Is this normal or some algorithm?
wing_addict_usa said:
I tried to see which camera is which by covering them and the telephoto doesn't seem to be active.
Once in a while in zoomed mode it'll blink to my finger but it's usually using the regular camera. Is this normal or some algorithm?
Click to expand...
Click to collapse
Zooming in doesn't activate the Telephoto Lens.
Open the Camera, along the right edge (vertical) or top edge (horizontal) there are 3 yellow icons with trees on them;
One seems close up -(telephoto lens button).
Middle one seems slightly farther away -(normal range shots).
One has a grouping of trees -(wide angle lens)
Pressing these activates the lens you want.
To test them all, along the right or bottom edge you'll see labels for Google Lens, Portrait, Triple Shot and AI CAM ... hit the Triple Shot and take a picture holding the camera still till all three lenses have taken a picture ... then check that picture and you'll see all three shots played out as a mini movie ... all three will be your validation that all lenses are working.
If that doesn't happen as outlined ... take the phone back to the store and exchange for one that's not broken.
If there isn't enough light, it won't use the telephoto lens. Instead it uses the main lens with a bigger aperture, and digital zoom to 2X. I hate that and would rather have direct control. Try the test in a bright environment.
-- Sent from my Palm Pre3 using Forums

Mi 9 stock camera app question

I have 16:9 mode enabled, but viewfinder (i.e. the screen) has this big semitransparent black area on the right that makes it difficult to visualize what's in the picture. The shutter and some options are on this big black stripe. But it is really getting in the way.
In 4:3 mode the stripe becomes solid and everything is ok, but in 16:9 part of the photo is actually behind that stripe which really makes it hard to take good pics.
Any solution or workaround? Do most people take 16:9 pictures these days?
I try take 16:9 it's look zoom in on camera app but after take photo it's look normal

Categories

Resources