I am going through this book as issues come up with my images and I will update it as I go along and understand more.
There is invaluable information explained in a very simple way. Below is not a review of the book however I have abbreviated or quoted as required for my own studies.
Chapter 1 sharp images
Also Scott Kelby CS4 Chapter 12 Look Sharp Sharpening Images.
Step one Kelby advises that he has never seen a digital image that he did not feel needed a little sharpening and so after colour correction do the following.
Select around 50% magnification.
Go to filter menu and choose unsharp mask. The unsharp mask dialog appears with three sliders
- the amount slider determines the amount of sharpening applied to the photo.
The radius slider determines how many pixels out from the edge the sharpening will affect.
the the threshold slider determines how different a pixel must be from the surrounding area before its considered an edge pixel and sharpened by the filter.
We have tested a sample which is amount 120% radius 1 and treshold 3. Wow I can see a difference.
The next advise is for soft objects such as flowers puppies or people. Its a subtle application which is amount 150% radius 1 and threshold 10.
Within the book Kelby gives us his favourite settings and also the opportunity to select our own. I can also save my favourite setting and apply it to a batch of images.
Next step also immediately after applying the unsharpen mask go to edit fade, if you have applied too much sharpen you can reduce it here or select instead of normal luminosity and this will apply sharpening only to the luninosity or detail areas of your photo and avoids spots and halos from over use of sharpening.
The digital Photography book 1 Scott Kelby.
Put camera on Adobe RGB if your printing yourself the quality is better than sRGB if your not printing yourself than most printing places are set up for sRGB but check with your printer.
Chapter 1 Pro tips on getting really sharp photos.
“If your photos aren’t sharp then the rest doesn’t matter”
Ok so this is my problem and lets see how I can deal with it.
tripod, cable release, mirror lift up on canon you can hold down first let camera focus keep button half way down and then shoot.
Image stabilizer should only be used in low light that is difficult to hand hold . If you are on a tripod then no as it will go looking for shake and this will create some.
Shoot your lens sharpest aperture most cameras it is 2 stops smaller than wide open. in my case around f8 or 11. In order to check this look at what images you get your sharpest results from and this is the answer.
A good lens.
keep ISO low where possible.
if you cant use a tripod set your camera to shutter speed priority. choose a speed that matches or exceeds the focal length of your lens. ie a 180mm lens youll shoot at a 1/200 of a second.
zoom in on the back of your camera screen to see if its sharp.
sharp shots in photoshop as above.
Note when resizing for web ppi 72 use amount 85% radius 1 and threshold 4
So for blog resize before loading up if you want the image smaller and then re-sharpen again as you lose quality when you make smaller.
NB anytime your hand holding a camera in anything but bright daylight then you risk getting a sharp image if this is the case use continuous shooting so that chances are one of them will be sharp. Use your camera strap to try and keep you arms tight to avoid shake or lean against a wall.