Something happened to camera quality

asked 2015-12-22 12:51:04 +0300

vp
561 ●18 ●22 ●29

I am not sure when this has happened, but recently I made a shocking observation in a rock concert: I cannot anymore take proper photos with Jolla camera. The photos of a stage full pretty full of lights is just a flare, no details at all. On the other hand, if I take a video of the same object, the video is pretty accurate and shows a lot of details. Has anybody noticed a deterioration of the camera quality recently? I believe this has happened with SF2.0.

Comments

Isn't it due to that? https://together.jolla.com/question/83049/scratched-camera-lens-getting-bad-pictures-how-to-fix-it/

Sthocs ( 2015-12-22 13:00:09 +0300 )edit

Sorry but which quality ? Have you ever seen something with this camera ?

malibu1106 ( 2015-12-22 13:47:43 +0300 )edit

Yeah. The camera quality is...awful.

hoschi ( 2015-12-22 14:36:13 +0300 )edit

vp is talking about not beeing able to take proper photos anymore, there was a deterioration. Therefore, it is not helpful to refer to the already weak quality.

Moo-Crumpus ( 2015-12-22 14:41:38 +0300 )edit

@vp, have you been playing with the exposure settings in the camera app? they can make a rather big difference if you've set them away from 'auto'

r0kk3rz ( 2015-12-22 14:55:05 +0300 )edit

answered 2015-12-23 10:09:49 +0300

marsch
3657 ●55 ●84 ●83

updated 2015-12-23 11:32:09 +0300

Without knowing the camera en detail, I'd say your IR protection film has rubbed off. That might happen over time if the lens is not particularly protected.

This kind of filter is placed between sensor and lens with sophisticated cameras and is probably just a coating for smartphone cams.

The effect of a removed coating would be what you're describing, especially at a concert venue, where a good number of IR-emitting halogen light sources are to be expected:

The film prevents the sensor from photons accumulated by invisible IR light. The photon saturation decides over your image quality.

If there's no protection anymore, the sensor pixels will saturate, but not relative to the visible light available. I.e. your own impression is different from what you see on the photo. Having the coating just partly removed (scratches etc.) adds additional artifacts.

Adding photons without any difference in the visible spectrum typically creates noise and leads to inferior image quality.

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Comments

I was aware of this (which could be extended to UV light probably), but is there any solution within the reach of an average DIY-man?

objectifnul ( 2015-12-23 10:21:46 +0300 )edit

IR protection film should be available in shops selling mid- to high-end cameras. As a quick test, you could just put it in between TOH and camera optics, which should be about enough to affix it.

marsch ( 2015-12-23 10:29:21 +0300 )edit

Nice idea. However, the filter should be extremely thin (i.e. plastic, not glass) to fit there. Will try to find one.

objectifnul ( 2015-12-23 10:36:08 +0300 )edit

But then why videos are ok?

anidel ( 2017-02-09 18:16:12 +0300 )edit

Indeed! Why wouldn't that UV hit the video as well?

vp ( 2017-04-19 12:18:59 +0300 )edit

Something happened to camera quality

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