Teknik gambar resolusi tinggi (High Resolution Image)

Hari ni takde banyak keje sangat, maklumlah baru lepas cuti tahun baru cina. Tunggu punya tunggu, tak ada email yang masuk... so aku pon menggatal tangan untuk mencuba satu teknik yang dipanggil High Resolution Image (ni semua pengaruh OM-D EM-5 Mark II)

Terjumpa tutorial ni dari Petapixel, maka aku pon cuba lah sebab dia kata tak berapa susah untuk achieve hi-res dari image yang low-res. Memandangkan tak bawak kamera ke tempat kerja, maka aku telah mencuba teknik ini dengan menggunakan kamera telefon cap ayam iaitu Samsung GT-I9295.

So, gambar kat bawah adalah hasil dari teknik tersebut. Boleh tahan... sesuai untuk scene yang statik seperti landscape, architecture, mungkin juga close-up produk. Kalau guna kamera phone cap ayam pon dah boleh recover banyak detail dan noise, apa tah lagi kalau guna kamera DSLR.

Sedikit ringkasan dari mula hingga akhir untuk dapatkan hasil seperti gambar di bawah:

- shoot guna kamera tanpa tripod, walau bagaimana pon tangan hendaklah stabil yang mungkin
- dapatkan sekurang-kurangnya 15 hingga 20 shots (if possible in RAW format)
- load semua gambar-gambar ke dalam photoshop layers
- align semua layers (Auto je)
- convert semua layers jadi Smart Object (ada cara lain, tapi aku guna cara ni)
- Stack Mode = Mean (atau Median)
- selesai!

Dari sini, boleh la cuba enlarge image tadi (cth: 200%) dan enhance secukup rasa (cth: sharpen / contrast / etc)

Enjoy the reading at Petapixel for further details and happy testing :-D (mode malas nak taip lebih panjang hehehe)





p/s: masih relevan kah rancangan aku untuk mendapatkan OM-D EM-5 Mark II ? :-D

UPDATE:

Single image (zoomed 200%)


Stacked 20 images (zoomed 200%)

KitKat 4.4.2 EACCES (permission denied). Solved!

Sources:

http://trendblog.net/fix-kitkat-sd-card-write-restriction/

In the last days Samsung has been pushing out Android 4.4.2 to flagship devices like the Galaxy Note III and Galaxy S4. Unfortunately, Google implemented an SD card write restriction (EACCES) in the latest Android version which can be quite annoying for users with an SD card in their phone.

The new “feature” basically restricts apps from writing to external SD cards. This can be quite annoying, because many users want to store apps on a secondary SD card instead of the main storage unit.

Luckily, fixing this problem can be easily done if you have root access. Here’s how you can do it (Please be aware that you’re performing these changes on your own risk!):

1. Make sure that you have root access


2. Perform a NANDROID backup to be completely safe


3. Use a root-enabled file manager and navigate to /system/etc/permissions


4. Edit platform.xml and find “WRITE_EXTERNAL_STORAGE“


5. Add an additional group definition for this permission: <group gid=”media_rw” />


6. Save the changes and restart your device


7. You are now able to write on your external SD card again

p/s: In my case, I used Total Commander (free from Google Play) and granted the app with root permission. Edited the mentioned file and and also added  <group gid=”media_rw” /> in "READ_EXTERNAL_STORAGE"

p/s 2: Should be valid for all type of android phones.