Does the camera hitting the glass limit its focus range? - Asus Transformer TF700

Every time I focus the rear camera, I can hear the lens hitting the glass window. Has anyone determined if this design flaw limits the focus range of the camera?

Cleanskinned said:
Every time I focus the rear camera, I can hear the lens hitting the glass window. Has anyone determined if this design flaw limits the focus range of the camera?
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I hear a tiny click. Are you sure that the lens is actually hitting the glass? My focus seems to be fine.
If hitting the glass is actually limiting the camera's ability to focus, that would be a severe design flaw.

I'm pretty sure everyone hears a tapping sound, correct? What is causing it then?

Related

Improve front facing camera

Im rooted running stock 4.2.2 rom. But iv always noticed this phones front facing camera really sucks... Anyone know an app or a method to improve it?
It's only a 1.3mp camera (or something like that), what do you expect out of it?
Sent from my Evita
Yeah, the front cameras on smartphones and tablets are always much lower resolution and quality than the rear camera. Really, the only use for the front camera is video calls and the occasional "selfy". You aren't going to fix the hardware limitations with software. I do wish the front camera was a bit better, but it is what it is.
One thing, is that the front camera opening is a dust trap, and hard to clean. If you can see dust on the camera glass, try to clean it out with a Q-tip or a rolled up edge of a cloth moistened with glass cleaner. In particular, if you notice a white haze to the front facing pics, cleaning off the dust will probably help.

Rear camera distortion

Just noticed that when things are in the top portion of the picture with the camera tilted down slightly things get distorted. It makes heads oblong and alien looking. Wondering if other people have this same issue or if it's just my phone. So it's really a question of whether the phone is being exchanged or returned.
I've attached two pics. When the tv is in the top portion of the pic it looks a lot taller than when it's in the center of the pic. Both pics were taken from the same distance at the same zoom amount.
Did you take the plastic film off the lens that comes from the factory?
s197 said:
Did you take the plastic film off the lens that comes from the factory?
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I was gonna say the same! Although mine lately has not been focusing at all unless i shake it. View is immediately blurry, but up close to something it is fine. Like it is stuck in close up. Shake it and seems good. This is before ROOT and playing around. Any ideas?
s197 said:
Did you take the plastic film off the lens that comes from the factory?
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Did you have a plastic film on your camera? I had one over the fingerprint sensor but if there is one on my camera it's near impossible to detect, I feel like I'm just scratching at the glass although my fingernail is definitely catching on something. I just cant tell if it's the edge of the glass for the camera or a film covering it.
i had the same issue so i boiled my kettle, and held the phone above it after it boiled and let the steam peel the lense sticker.
omgi0wn said:
Did you have a plastic film on your camera? I had one over the fingerprint sensor but if there is one on my camera it's near impossible to detect, I feel like I'm just scratching at the glass although my fingernail is definitely catching on something. I just cant tell if it's the edge of the glass for the camera or a film covering it.
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If you had the plastic on it, you'd know it. It was very noticeable on mine.
droidiac13 said:
If you had the plastic on it, you'd know it. It was very noticeable on mine.
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I really can't tell if it's there, if it is it lines up almost perfectly. It isn't causing me issues for now though so I'm not going to mess with it.
omgi0wn said:
I really can't tell if it's there, if it is it lines up almost perfectly. It isn't causing me issues for now though so I'm not going to mess with it.
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You would notice in the center of the lens. The plastic would have a cut. Once it's off, the lens is perfectly flat across the top.
The plastic was still on, but no change in distortion taking it off. I'm guessing the cutout in the center of the plastic makes it so it doesn't impact photos.
So I tested on my computer monitor and am able to somewhat replicate what is happening in your shots. However, this distortion is natural because you're tilting the camera downwards on its axis. Its called perspective lens distortion and is common to all cameras without a tilt shift lens (a lens that costs several thousand dollars). You should be able to replicate the effect with any camera phone.
Yeah I've noticed distortion in other cameras but it's just not so extreme. On the s6 the distortion makes any pics with the subject on the edge ridiculous and unusable.
I think I've narrowed it down to when the s6 is set up to shoot max resolution at 16:9. When I switch it to 4:3 the distortion is pretty much gone since that distorted area is just cropped out but that reduces it from 16mp to 12mp. Other phone cameras I've had (moto x 2nd gen and s3) crop the other way (max resolution at 4:3 and then crop to get 16:9).
So the s6 presumably has a 16:9 sensor where the others had 4:3. But the extra width is pretty much unusable.
I'm not sure how I feel about this. What's the point of having a 16mp camera if you can only effectively use 12mp?
Any update on this? I was hoping there's a post processing software in Android/Windows/OSX that can compensate for the lens distortion even though it'll reduced the resolution a bit. I have a AT&T Galaxy S6.
I tried DXO Optics Pro 8, and it works very good for shots from my Nikon D7000 to un-alienize the faces, but there are no modules for the Galaxy S6 lens.

Something moving inside the phone

A few days ago I noticed this weird rattling noise when I shake my phone, as if something inside is moving. I thought maybe the home button was wobbly, so I held the home button firmly and the noise is still there. I managed to hold all the buttons to prevent them from moving and shook the phone, but there's still something rattling inside it. I think it's the camera since if I take a closer look, it doesn't look like it's completely straight.
Also, when I launch the camera app, there are minor 'lags' when I move the phone, also it takes longer to focus now and sometimes doesn't focus at all.
Any idea if the rattling inside is the camera lens or lens cover or is it something else?
G920F (64GB)
Sapphire Black
No warranty
Bought from shady guy on the street
It's the camera. Because the rear camera has OIS (Optical Image Stabilization) sensor. While you don't use the camera, the lens is going to move arroung where it is. But if you turn on the rear camera and shake your phone you'll stop hearing because OIS is working
sentinelvdx said:
It's the camera. Because the rear camera has OIS (Optical Image Stabilization) sensor. While you don't use the camera, the lens is going to move arroung where it is. But if you turn on the rear camera and shake your phone you'll stop hearing because OIS is working
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I was worried about the same thing. Is it normal?
ratnodip said:
I was worried about the same thing. Is it normal?
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It's normal, don't worry. Once you star the rear camera, the magnets of the OIS will activate and if you shake it you won't hear that until you switch of the camera again.

Rear camera off-center

Probably a silly question. But I want to know whether the lens's position cause any effect on OIS when it's being completely off-centered as signified by the red circle in the image attached.
Thanks
I don't think it is a problem. If there is no black edges on screen when taking pictures, everything is fine.
And to see if OIS is turning on, just shake your phone (with camera off) and you can hear camera moving . Go to the camera app and shake again, you will not hear the camera moving. It means OIS is on.
Sent from my SM-G930F using XDA-Developers mobile app
goTouch said:
I don't think it is a problem. If there is no black edges on screen when taking pictures, everything is fine.
And to see if OIS is turning on, just shake your phone (with camera off) and you can hear camera moving . Go to the camera app and shake again, you will not hear the camera moving. It means OIS is on.
Sent from my SM-G930F using XDA-Developers mobile app
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I didn't mean whether the OIS will work or not, what I meant was whether the off-center will have any effect on OIS's working resulting in a bit more shaky video relatively?
Turn your phone around and it's centered.
Your welcome
ginodp said:
Turn your phone around and it's centered.
Your welcome
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I don't think so. I say this based upon my examination of the eight S7's I've possessed so far. Turning any one of them upside down appeared to merely cause an optical illusion. The illusion was that, if the back camera lens seemed off-center when right side up, flipping the device 180 degrees simply made it appear that the relative lens position had changed, often then seeming more centered.
If you look carefully at your S7's back lens (a magnifier helps), you can easily see that the lens itself is considerably recessed beneath the surface. That is, it is set back below the protective surface glass and the surrounding circular port opening. This means that when you look at the lens straight on, a crescent shadow is cast around a portion of the lens. And that makes it only appear to become more centered or more off-centered. The crescent shadow will change position depending upon the direction of your back lighting. You can hold your S7 facing its back panel, look at the lens, and pivot around in a circle to change the direction of the back lighting. You should notice the illusion of the lens moving from one side to the other as the back lighting becomes oblique from the opposite direction. A similar thing will occur when you turn the phone upside down.
Out of the eight S7's I've possessed, only one of them had a near perfectly centered back camera lens. As long as no portion of the lens is overlapped by the circular port opening, there should be no performance loss with the camera function. As stated, an off-centered back camera lens is actually only the position of the internally mounted camera module as relative to the external circular port opening. And the movement illusion is the shadow crescent moving around. The OIS movement should be so minimal that it will be undetectable in terms of how centered the lens appears to be.
Meher458 said:
Probably a silly question. But I want to know whether the lens's position cause any effect on OIS when it's being completely off-centered as signified by the red circle in the image attached.
Thanks
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Hi there.
I just got my S7 Edge today which seems to have the same misaligned camera and circular cover.
Did you notice any effect this has?

Question How many have Lens Flare issue?

The more I read, the more it seems that P7P users have got a bad Lens Flare issue on the X1 Lens.
Out of curiosity, how many users here have the issue themselves?
I used to have the Mate 20 Pro for 4 years and the Lens Flare wasn't that bad in comparison to the P7P.
I'll add that I don't have a lens cover over my cameras and the glass is clean.
Everyone, that's just the nature of the beast.
1gavinr said:
The more I read, the more it seems that P7P users have got a bad Lens Flare issue on the X1 Lens.
Out of curiosity, how many users here have the issue themselves?
I used to have the Mate 20 Pro for 4 years and the Lens Flare wasn't that bad in comparison to the P7P.
I'll add that I don't have a lens cover over my cameras and the glass is clean.
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That's not an "issue", everyone has the lens flare. It only depends on the light angle and how it hits the lens.
It's pretty bad. I took some comparison photos with my S21 before I sent it in for trade and the flare was awful. And non-existent on the Samsung photos.
This was taken with a Canon DSLR and a £2000 Canon L lens, there are always circumstances where it is going to happen.
issasaurus said:
It's pretty bad. I took some comparison photos with my S21 before I sent it in for trade and the flare was awful. And non-existent on the Samsung photos. View attachment 5762543View attachment 5762541
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Different focal lengths though so not a fair comparison.
MrBelter said:
This was taken with a Canon DSLR and a £2000 Canon L lens, there are always circumstances where it is going to happen.
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If it happens in some circumstances and only once in a while, its OK. But I think p7p has a permanent problem.
One request for folks who experience it: can you try a case (or any other way) which covers most of the aluminum? I think the reflections off the aluminum are adding to the flare phenomenon.
IMO, going with shiny metal around the lens was not a smart choice by google. Get the wrong curves on that part and it can mess with the light that goes into the lens.
devsk said:
If it happens in some circumstances and only once in a while, its OK. But I think p7p has a permanent problem.
One request for folks who experience it: can you try a case (or any other way) which covers most of the aluminum? I think the reflections off the aluminum are adding to the flare phenomenon.
IMO, going with shiny metal around the lens was not a smart choice by google. Get the wrong curves on that part and it can mess with the light that goes into the lens.
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It does only happen in some circumstances though and only once in a while on the Pixel 7 Pro to be fair and those circumstances are using the 1X lens while it pointing it at something very bright and this is when lens flare is always a risk.
The problem is a lack of any anti reflection coating on the glass covering the lens, it is just plain glass sadly. I have wondered if we could use something as a lens hood which should help dramatically with the issue as it stops light from falling across the lens.
FWIW i have a black skin over my camera bar, it certainly made a difference one the P6P but it makes no difference whatsoever on the P7P
Using a different focal length other than 1X the problem is much, much less noticeable.
I see the issue across all lenses. That's why I think its the metal, not the lenses or the glass covering the lenses!
Any kind of coating will reduce the amount of light that the lens can capture. Is anti-reflective coating an industry standard across lenses?
hmm....quick google suggests that lack of anti reflective coatings on lenses may be the reason for this unusual issue. Which means that we are stuck with it...
And it does look like that anti reflective coating is the norm and it actually increases the light that reaches the sensor....Why would google hardware not do this? go figure!
devsk said:
I see the issue across all lenses. That's why I think its the metal, not the lenses or the glass covering the lenses!
Any kind of coating will reduce the amount of light that the lens can capture. Is anti-reflective coating an industry standard across lenses?
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As i said, i have a black skin on my camera bar, there is no metal showing.
Any lens worth its salt be it camera or glasses will have an anti-reflective coating.
Why Lens Coatings Are So Important in Photography
A look at the science of camera lens coatings and how they improve optics while reducing things like lens flares in photographs.
petapixel.com
devsk said:
hmm....quick google suggests that lack of anti reflective coatings on lenses may be the reason for this unusual issue. Which means that we are stuck with it...
And it does look like that anti reflective coating is the norm and it actually increases the light that reaches the sensor....Why would google hardware not do this? go figure!
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They have on the lenses, they just didn't bother on the class covering them.
MrBelter said:
They have on the lenses, they just didn't bother on the class covering them.
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Any idea if it can be applied after the fact from the outside? Or is it something that has to be cured into the glass before putting it on the frame?
devsk said:
Any idea if it can be applied after the fact from the outside? Or is it something that has to be cured into the glass before putting it on the frame?
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That i don't know, i wouldn't want to risk buggering the whole thing up myself as any coating has to bond to the glass and getting it back off could be difficult.
The fix may be as simple as holding your hand above the lens like a simple lens hood to prevent light scatter.
I went to a Christmas light switch on last night and the lens flare and the simple reflections you get from the plain glass doesn't half make you study the scene to try to get around it, that in its self makes spontaneous street photography at night difficult.

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