LG G4 Picture Samples

Hi
Yesterday i had the opportunity to capture lightning.
The results was this: goo.gl/4YzP56
(Please copy this link to google search, because i'm new user and i can't post links)

I shoot in raw format and edit pictures in lightroom 6.
Settings: iso50, 15s, manual focus, other auto

I hope you like the images

One Twelve said:

Found a lens profile created by this guy.

http://www.yousifalmarri.com/2015/0...e-for-the-lg-g4-smartphone-download-included/

if it works right, all these corrections will be done with one click

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[UPDATE 2/8/2015: Please firstly check this link: http://xdaforums.com/showpost.php?p=62150650&postcount=717
If you still want/need to use the default LG camera app, then continue reading the below.]

[UPDATE: 24/02/2016 - The issue is fixed with the Marshmallow software update!]

I bought the LG G4 and can now do my own tests

For RAW shooting, I thought at first that this adobe lens profile addressed all the vignetting and color cast issues. After further testing I realized that some greenish color cast was still visible (especially on files with grey/white background where it becomes obvious). The color cast was mitigated by the vignetting adjustment, but it seems that nothing is really “fixed” in terms of color deviation.

The Adobe Lens profile doesn’t do a full flat field correction but only addresses the vignetting (& distortion on a separate matter).

I found a freeware program which also fix the color cast (there is no distortion correction though): http://lavidaleica.com/content/using-cornerfix-correct-images

I created a calibration profile which works well for my own device and also for all the G4 dng samples I found across the web. You can download the cornerfix calibration file here:
http://www.photo-production.net/vincentpham/web/lg_g4_cornerfix/LG_G4.zip

Here is what you need to do:
- Install cornerfix (cf. first link)
- Unzip the calibration file (cf. second link) and open it with the cornerfix app under "Lens Profile"
- Open "Files / Batch correct images" and load all your DNG files (it works for a single DNG file too). This will create new DNG files (with _CF at the end) which include the flat field correction; what LG should have done from the beginning.

IMPORTANT POINTS for best results (at least for me):
[UPDATE: 25/06/2015 - The following is accurate for most circumstances and well lit scenes, if you get unwanted results, check the end of this post]
1. I would advise NOT using this profile above ISO 600. Lightroom can't handle properly the noise reduction at such ISO (without getting artifacts) and the profile which will brighten up shadows will just make the end result even worse.
2. For best results working with different scenes, under "Image Correction Options", set up the Luminance value to 1 and Chroma value to 0.65 (I found out that Chroma value set to 1 sometimes overcompensates the adjustment):


Here are the results when shooting a white wall:
- Original RAW file - This tells you how bad the original RAW DNG file is:


- Correction with the Abobe Lens profile - vignetting is handled but there is still some greenish color cast:


- Correction with cornerfix - both vignetting and color cast are handled:

aygul12345 said:

Well? Hows your thoughts about this app?

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One Twelve said:

Nice find. Can you confirm whether turning off shutter sounds works ?

Auto ISO for Shutter Priority Shooting :good:

Customizable aspect ratios :good:

Burst, Timer, Timelapse, and Video modes all with full manual controls, even during video recording!

---------- Post added at 03:46 AM ---------- Previous post was at 03:43 AM ----------
Exactly this is crucial for fast shots and its a pity LG left them out.

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Here are my thoughts on the ProShot camera app followed by tips to maximize your image quality.
This is a paid app and you can dowload it here: https://play.google.com/store/apps/details?id=com.riseupgames.proshot2

This is a great app for photo enthusiasts and it currently offers some unique shooting modes with the LG G4.
I am not talking about scene modes like beach, snow, food, etc... - this app doesn't have that - but about the shooting functionalities you usually get on an advanced camera or SLR. The closest photo app offering a lot of manual features is Camera FV-5 that I also like.

Before going into the details, let's go through some photography basics.
The image exposure you are getting depends on the following parameters:
- Aperture: It is fixed on the LG G4 at F1.8
- Shutter speed: A slow shutter speed will allow more light to be captured but increase the risk of blur (sometimes a slow shutter speed is wanted to get light trails or water blur and the phone must be very steady for such cases). A fast shutter speed will freeze the motion.
- ISO: The image quality is maximized at ISO 50 (I have made tests and can confirm that). For a same exposure, choosing a higher ISO allows you to select a faster shutter speed (to counter shake / motion blur) but you will get more noise in the picture.

The following picture illustrates how these parameters work:


As the aperture is fixed to F1.8 on the G4, going forward I will only cover the 2 following values: Shutter speed and ISO.

LG's camera, FV-5 and ProShot offer the following modes:
- Auto: Shutter speed and ISO are chosen automatically. You can play with the exposure compensation to undexpose / overexpose the pciture (the camera will adjust one of the 2 values, sometimes both).
- Full manual: You have to manuall select the Shutter speed AND ISO values. The exposure compensation is not available in this mode (it becomes irrelevant).

So what if I want to shoot at a specific ISO but don't want to adjust the Shutter speed everytime the light changes (or vice-versa) ?

This is where ProShot comes into the game with 2 unique functionalities (not offered on LG's camera or FV-5):
- You can select an ISO value and the camera will automatically select a Shutter speed. You can still use exposure compensation if you want.
- You can select a shutter speed value and the camera will automatically select the ISO. You can also still use exposure compensation if you want.

Ok that's good but what do I make with that ? Here are shooting recommandations to maximize your image quality all the time using the ProShot app:

1. With good light and static subject(s), use P mode and set the ISO value to 50. You will get the best image quality possible on the phone with that setup. If you want to undexpose / overexpose the picture, you can still use exposure compensation (which will affect the shutter speed, but automatically). If you start getting shake / motion blur (low light or fast moving subject, go to point 2.

2. Determine the minimum shutter you can use without getting shake / motion blur (let's say for example 1/8 sec with steady hands and a static subject). Use M mode and set up this shutter speed value. Leave ISO in "Auto". ISO will then be automatically be adjusted depending on the light. (EDIT: You can also use C1 or C2 mode if you want to apply exposure compensation.)
If you have multiple chances to shoot the scenes, you can use burst mode - even in RAW + JPEG, something not possible with the defaut G4 app - and lower the shutter speed a bit under your comfort level (1/4 sec for example). Then review your series and only keep the sharpest picture.

Because of the above shooting flexibility available in ProShot, it is currently my favorite photo app with the LG G4.
Please note that the slowest shutter speed currently available is 0.7 sec in manual mode (the stock camera allows to go up to 30 sec).

@One Twelve
I don't get any shutter sound on my side regardless of the phone and app setup. My G4 software is V10b-EUR-XX.

Here are some images I took in raw and then used lightroom to touch up and edit.