Volkswagen Motor Show 2011

Finally, habis jugak tempoh servis aku bersama AJIS company. Pejam celik2 dah 2 bulan kerja. Ok lah tu dapat isi masa lapang carik rezeki.

Thank you to guys at AJIS for supporting me and your guidance. I wish y'all and AJIS much success in the future. ;-)

Geng merayap tengok movie; amin,bob,khairi,baim,yunus..baikkk punyeeee

Lawatan Sambil Bekerja di Singapore

Baru-baru ni aku dapatlah peluang pergi over-the-sea. Tak jauh cuma ke Singapore je tapi excited jugaklah since ni first time der. Tujuannya adalah untuk buat stocktake for company Uniqlo. Ada 5 branch kitorang kena buat stocktake kat sana so kenalah stay 5 hari kat sana.

How To Tell Your Android To NOT Index Certain Files

Anyone of you ever encountered situation where your android phone index ALL your media files inside your SD card and display it in your gallery and music player? For example some images and sounds that may be used by installed application but you don't want it to appear in your gallery/music player and you don't want to delete it either coz it sure will messed up you application. So, how do you do in situation like this? I'll show you how to overcome this after this break.

How To Read Tyre Sidewall Information

Lets take tyre below as a sample:

We'll take each value and see what it's all about

• 205 - measures the tyre width in milimeters.
• 55 - aspect ratio or height of the tyre itself from the width. Shown here is 55 means 55% from 205. We use this value to determine tyre profile. Low profile or high profile tyre.
• R - Radial construction tyre. More info about radial tyre head to HERE
• Click Here for other tyre types.
• 16 - diameter of inner rim in inches.
• 91 - Load rating of the tyre. See table below for full load rating. This number indicating the maximum load in KG that the tyre could withstand at the speed rating(see speed rating)
• V - Speed rating. It indicates the maximum speed the tyre can withstand in conjunction with Load rating. See the speed rating table below.

Load rating

Speed rating

Photography: Depth-of-Field

Wow. Sibuk gilalah sempena amik intersesi ni. 2 subjek lagi tu. Memang hectic. Anyway, intersession dah pun habis and boleh rehat. XD Takut nak tau result :S

Anyway, untuk entry ni saya nak buat yang pendek je la..nak share about depth-of-field dalam bidang photography sebab recently ada rakan saya ni tanya:

"eh camane kau buat gambar belakang tu jadi kabur ea?"..and

"eh camane nak control brape banyak kabur kita nak ea?"..ha lebih kurang gitulah..

So, konsep yang dia tanya tu adalah berkenaan Depth-of-Field(DOF). Ia adalah term untuk menerangkan jarak antara depan dan belakang focus point yang relatively sharp. Untuk membezakan, kita guna term "shallow DOF" untuk jarak DOF yang pendek(means tempat yang dalam focus sikit je) dan "deep DOF" untuk jarak DOF yang besar(means tempat yang in-focus agak luas).

Source: http://images.cambridgeincolour.com/tutorials/dof_circleofconfusion.png

Apa yang penting sangat dengan depth-of-field ni? Penting sangat kalau:

• Nak buat bokeh
• Nak buat potraitization
• Supaya orang yang lihat gambar fokus pada objek bukan pada backgroundnya

Potrait - source: http://withfriendship.com/images/i/44403/Portrait-photography-image.jpg

Bokeh - source: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoob7sSKLgYrrfOQcTO0qcSVcyB2GdyhxZh17koKRTbb2ouxkTOYZCq5auwb8VA4CFuE_6lSNKjL0r2p-Q0ETL3dkKSC17-39BjYZC76V5X3SPjWRVNPsuCi_JgxQsSEW_rE9arxuVYVw1/s400/awesome+bokeh.jpg

Macamana nak kawal depth-of-field??

Ada 3 cara:

1. Aperture
2. Focal length
3. Distance

But usualy, people only focus pada aperture dan focal length so saya akan cerita pasal dua factors ni sahaja ok.

1. Aperture

Aperture adalah luas bukaan iris/lubang pada lens. Ia diukur dengan menggunakan f/stop seperti f1.8, f2.8, f5.6. Makin besar nilai f/stop, makin kecil bukaan aperture dan juga sebaliknya. Ramai orang silap tentang prinsip aperture number ni bila mereka ingat f number yang besar, besarlah bukaan aperture. Wrong.

INGAT: f-number besar, bukaan kecil
              f-number kecil, bukaan besar

Aperture and its value

Jadi, untuk mendapatkan shallow DOF macam gambar potrait di atas, pakai aperture yang besar(f-number kecil). Kalau hendakkan deep DOF pakai aperture kecil(f-number besar). Tapi ingat, kalau pakai bukaan aperture kecil, anda kena matchkan dengan shutter speed yang bersesuaian sebab bukaan kecil hanya membenarkan sedikit cahaya masuk ke sensor camera/filem. So kena try-and-error ;-)

Shallow DOF

Deep DOF

To conclude:

• shallow DOF = wider aperture = lower f-number = lesser lighting entering camera
• deep DOF = narrower aperture = higher f-number = more lighting entering camera

2. Focal length

Kalau ikut wikipedia:

The focal length of an optical system is a measure of how strongly the system converges (focuses) or diverges (defocuses) light.

Tapi untuk layman term, focal length adalah berkenaan zoom. To cut it short, the more you zooming in, you'll get shallower DOF and vice versa. Simple.

Zoom more = shallower DOF
Zoom less = deeper DOF

Focal length comparison - source: www.freshdv.com/wp-content/uploads/2007/10/dof_explained_tutorial.jpg

Ok. Simple as that. Tu je lah nak cerita nak share. Skarang nak cari kerja. huhu..

Papai!!

Review: Samsung Galaxy Tab P1000

With huge amount of their device operated by Android OS they managed to sold, Samsung continue to step forward. This time, they introduce the Samsung Galaxy Tab. Galaxy Tab is a phone with tablet form factor device running Android OS by default and capable to delivering whole new experience for user. In this entry, we will into what Galaxy Tab can offer for Android fans.

D-Link DIR-615: Flashing To DD-WRT Firmware

This entry is about my experience flashing a router. If you decide to do it too, bear in mind that flashing any device with unofficial firmware/software will result in void of warranty. I held no responsibility for any mishaps due to your flashing activity.

I decided to flash my DLink router from original firmware to DD-WRT firmware. The reason why I want to do this is due to fact that the original firmware provided by DLink miserable for example: I can't access the router whenever it's disconnected from the internet, I'm having frequent wireless disconnectivity, slowdown and so on.

So, the DD-WRT is:
I quote from DD-WRT.com

"DD-WRT is a third party developed firmware released under the terms of the GPL for many ieee802.11a/b/g/h/n wireless routers 

based on a Broadcom or Atheros chip reference design.

The firmware is maintained by BrainSlayer and is hosted at dd-wrt.com. ....."

So, let's begin. Things we're gonna need is:
1. A compatible router - log into your router web interface(typically 192.168.1.1 or 192.168.0.1) and find hardware revision and also firmware version. Alternatively, you can take a look on the bottom of your router. Write somewhere these two things.

Then, point your browser to: List of supported device
and look whether your router is compatible with dd-wrt firmware. In my case, the router id DLink DIR-615 and hardware revision is: E4 in other words "I CAN CONTINUE"..yeah..
2. LAN cable. Strictly don't flashing a router wirelessly.
3. Computer..of course!
4. Original firmware. In case something goes wrong. We'll also gonna extract magic hardware code in original firmware. In my case, it's available to download: Go directly to download E3/E4 original firmware
4. DD-WRT firmware. Once you sure that your router is compatible(see step 1), proceed by clicking a link provided and follow the procedure to download. If you opt to use their guide, print the guide first.
5. Hex editor. In DD-WRT guide they suggest using emacs but I prefer HHD Hex Editor NEO.

Let actually begin.
1. Open the original firmware using hex editor. Find the magic hardware code usually located at the very bottom of the file. Copy the magic hardware code.
2. Continue from 1, paste the magic hardware code into dd-wrt firmware file. Again, look out at the very bottom of the file. Then, save the file.

3. Alright, once the ddwrt firmware is ready, connect your computer to router using LAN cable. Wait until your PC get its IP.
If that's not happenning, try reset the router(see manual for this) and set your computer to static IP eg: 192.168.0.2. Never use 192.168.0.1 since this is default IP the router going to use.
4. Point your browser to router web interface(192.168.1.1 or 192.168.0.1), go to "Tools" -> "Firmware".
Click the "Browse" button and select the ddwrt firmware that you have edit early. Continue by click the "Update" button.

5. A status page will appear. In my case, I wait for about 10 minutes and it didnt direct me to anywhere so I just turn off the router and on back again(this should not need to be done). Note that if you have chosen static IP early, kindly set the setting back to DHCP. Wait until the your computer is connected with the router.

6. It YEAY or NAY time, point to 192.168.1.1 on your web browser. If you lucky, you will see DDWRT firmware new interface. That shows that you have succesfully install new firmware. But if nothing, it's PROBABLY BRICKED.

Here's is some interface from ddwrt firmware.

Verdict
1. Fast indeed. Webpage/video loading time is greatly reduced. My brother and father also feels that.
2. Full of features. Yep. So many features they managed to pack into this amazing firmware.
and so on...

Ok, that's all for my entry now. I will try to write new entry about how Im configuring the new DD-WRT firmware.
Bye2!! :)