Minggu 15

Minggu ini merupakan minggu terakhir kuliah untuk keals visual technology.Untuk kelas ini, kelas dimulakan dengan masalah scenario yang diberi pada minggu lepas iaitu berkaitan dengan visual printing.

Cara menyelesaikan masalah telah saya update dalam blog ini.

_______________________________

Dr J menekankan mengenai pekara-pekara yang penting iaitu :

• 72- 96 dpi sesuai untuk resolusi monitor (untuk mata)
• 300 dpi dan ke atas adalah sesuai untuk printing.
• Sekiranya pixel tinggi, kualiti printing akan menjadi rendah iaitu  menjadi jagged @ blotched.

Cara penyelesaian yang diberikan oleh Dr J adalah:

Aktiviti 1

       Solution 1

• untick the resample image box 

                             

         Resample a.k.a interpolation - adding up pixels for bigger resolution

    Solution 2 

• Recapture again the image using camera , using higher resolution

Aktiviti 2

Solution

• Untick the resample image box
• Resolution maintain
• The size is change

___________________________________________________

Dr J also said that - for photoshop project to make book cover or poster with A3 size , choose custom with the size as :

•  297 mm X 420 mm  / 11.69 " X 16.54 "

______________________________________________________

Dr J juga telah mengajar cara teknik blending. Yang boleh digunakan dalam projek photoshop untuk kombinasi 2 @ lebih gambar menjadi satu gambar. Teknik ini membolehkan imej-imej yang digabungkan seolah olah imej yang tiada perubahan dibuat.

• Using brush /gradient tool
• Using layer mask tool at the active layer
• Make sure the foreground color is black and white. The black color for delete and the white color for undelete.
• Use the brush tool, by choosing the right brush size and maintain the hardness
• If mistakenly delete - change the foreground to white and black
• Lastly, change the opacity 

  

  foreground color

  _________________________________________________

Dr J juga memberi " tips " untuk exam...tips soalan exam secara asasnya,,,(jenis-jenis soalan )

Dr J dengan tips exam

____________________________________________________

Sebelum kelas berakhir, Dr J telah memberi lagi sedikit ilmu berkaitan membuat watermark secara batch kepada gambar-gambar .Cara yang ditunjuk Dr J menggunakan action yang boleh dibuat baru secara custom. Sangat best teknik ini...memudahkan kerja ...

Untuk membuat watermark banyak-banyak untuk gambar- gunakan action custom yang telah dibuat itu. Kemudian file >automate>batch.. selesai kerja watermarks...

Menurut Dr J juga, terdapat juga action percuma yang boleh di muat turun dan di gunakan ..caranya :

• pilih action 
• Muat turun
• Open dengan double click
• Pilih Photoshop

Visual printing Activity 1 and 2 -Scenario

Scenario 1

Printer requirement : 300 dpi , print out : 5 “ x 7”

Client  ready  Image : 2048 x 1538

Photo Editing Software show : Client reset the dpi to 300

_____________________________

Calculation :

2048/300 =6.83

1538/300= 5.12

Max print size :6.83” x 5.12”

Schematically:

· divide pixels by inches, is the outcome > or exactly 300, you get a good print
· divide pixels by inches, is the outcome < 300, you have to add pixels (resamplen)
· divide pixels by 300, and you’ll get the maximum printsize in inches
 

Dpi is for printing, 300 dpi is good for printing

Solution :

Image >image size

Resampling

a) unticked resample box  

Change the number 72 into 300 and  Uncheck the resample box

·         The dpi-number is meaningless, and a change of that number doesn’t alter your photo. the quality of the photo hasn’t been changed :

·         Same exposure

·         same number of pixels, nothing has changed.

·         Only the number of 72 has been changed into 300.

But it will change the height and width..

b) Change the pixel dimension

Go to image size again…tick the resample size

Need to change the pixel dimensions

Change the unit to percent

Key in  any value …any changes here will effect the   document size ..

Try and make changes at the pixel dimensions until we get the desire document size

Upscaling Images

Normally enlarging the size of an image means losing image quality. Upscale your digital photos for print with almost no visible quality loss.

1. After opening the image to increase, open the Actions palette if not already open (Alt+F9). Since we will be increasing the size of the image at small increments at a time, to create an action to do this multiple times until the desired image size has been reached. This will also come in handy for quickly upscaling other images in the future.

In the bottom-right hand corner of the Actions palette, click on the Create new action button.

2. Use the following settings for creating the new action. Once done, click the Record button.

3. Now that the new action has begun to record our changes, we will begin to increase the image size one time gradually using only the Image Size window. Access this window by going to Image > Image Size (Alt+Ctrl+I). To minimze quality loss, we wil only be increasing the size 10 percent at a time. In the document fieldset within this window, change inches to percent. Then change both the width and height to 110. Lastly, for this effect to work with optimum results, change the selection in the drop down box under Resample image to Bicubic Smoother (best for enlargement). After this has been done, click the OK button.

4. You will notice that the image size has been increased slightly. If you look closely it will still be hard to notice any quality loss, which is exactly what we are attempting to acheive. Now that we are done recording our actions, go back into the Actions palette and click the stop button at the bottom of the palette. Go back into the image size window to see if the image is at the desired size. If not, go back into the actions palette where you will see the newly created Upscale 10% action. To repeat this process (to continue to increase or enlarge the image), select the new action and click the play button as many times as necessary.

4. You may get to a point where your image is just slightly larger than the desired size. To get it to the desired final size, you have two options; crop the image or resize it without enforcing scale styles or constrain properties in the Image Size window.

___________________________________________________________

Scenario 2

Printing at home

Image size wanted : 6” x 4 “

Image size : 28” x 21”

Change settings to 6” x 4.5” – resamples the photo only

Solution :

Resize – downsize

It’s not recommended to downsize an image

For this scenario…

1.   Open  Photoshop
2.    Choose an image

3. Select the cropping tool (marquee tool)
4. Edit the style
5. Change the normal Fixed Aspect Ratio" (force the selection into square)

Normal - free to drag out any size selection we need with any dimensions

6. Enter width of 6 and height of 4
7. And select it at the image..after done selecting
8. Go to image> crop
9. The  image is 6” x 4 “ as desired.
10. File menu > print
11. Page setup -Change the paper orientation .
12. Click ok..
13. Tick  the box that says "Scale to Fit Media".
14.  Click the Print button .