PowerPoint 簡報photo.su.ust.hk/files/retouch_2016.pdf · Photoshop can NEVER create details in...

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Transcript of PowerPoint 簡報photo.su.ust.hk/files/retouch_2016.pdf · Photoshop can NEVER create details in...

1. Before Start

2. Basics

3. Landscapes

4. Portraits

5. Extra

• Alternatives

– Paint Shop Pro

– Aperture (Apple)

• Free software

– GIMP

– Paint.NET

• Photoshop

Photoshop can NEVER create details in reality

Photoshop Position, focal length, exposure time etc. are

IMPOSSIBLE to modify in Photoshop

• JPEG RAW Common camera image formats are JPEG and RAW

• RAW JPEG RAW files are uncompressed with great image

quality while JPEG files have a smaller file size

– RAW JPEG Better to use RAW files for retouching

– JPEG Choose “Fine” quality and highest resolution when

using JPEG

Original

JPEG Fine EV+1.5 RAW EV+1.5

Original

RAW EV+1.5

JPEG Fine EV+1.5

Colour space

• sRGB vs Adobe RGB

– sRGB sRGB has high compatibility

– Adobe RGB Adobe RGB has wider colour space, capable in

showing more colours

sRGB Recommend beginners to

use sRGB to avoid

complicate conversion

• Higher the bit length, more level in colour channels

and smoother the colour transition

• RAW JPEG Higher bit length can be

record in a RAW file than

that in a JPEG file

PS Recommend to backup before start

• PSD / TIFF

JPEG Save as PSD / TIFF file until output as JPEG

Demonstration

• Keep the original data of the image for later non-

destructive editing

• > > Layers > Smart Objects > Convert to Smart

Objects

• Photoshop Photoshop has different selecting method

Quick Selection Tool / Magic Wand can

select similar colors for removing background

Crop Tool

• Remove excess parts of the image

Crop Tool

• Remove excess parts of the image

Crop Tool

• Ctrl Holding Ctrl to straighten the image

• Photoshop Photoshop provide different ways to adjust

brightness

• Auto Tone provide a fast way to adjust brightness

and contrast in a desired level

• / Brightness/Contrast provide basic adjustment

• Exposure Value adjust brightness by emulating

camera exposure value

• Levels and Curves can adjust bright and dark parts

• S S A S-shaped curve can increase contrast while an

inverted S-shaped curve decreases contrast

• Color Balance provide adjustment on environment

light colour

• Use Auto Color to change such in a faster way

• Saturation makes photos more colourful

• Vibrance is much like saturation, but makes certain

colours (like skin tones) more natural

Camera Raw (Recommended)

• Provide a direct parameter-changing interface

• Not only brightness settings, but also white balance

• Combining Adjustment Layer and Gradient Tool

• /

Dodging / Burning Tool can adjust brightness of

specific part of image

• Higher clarity makes clear edges

Camera Raw only

• Dehaze can help remove unwanted hazy glares

Camera Raw only

• Lens Correction helps remove distortion and fringing

• Lens Correction can change the perspective of image

• HDR Pro HDR Pro can produce photos with high dynamic

range from a sequence of still photos

• Photomerge Photomerge can produce panoramas from a

sequence of still photos

• By Content-Aware filling, we can fill up missing

parts in panoramas

• Red-eye Tool can remove red spot in eyes

caused by flash

Spot Healing Brush Tool can remove pimples and

marks

Use Hue/Saturation on certain colour channel to

make skin colour more beautiful

Black & White Tool can specify certain color tone

density when changing to a black & white image

• Photo Filter can simulate the effect of colour filter

Demonstration

• Direct access to EXIF info

• Camera Raw in ease

• Photoshop Free from Photoshop!

• More professional organizing

• Batch process