GIMP: Efek Vintage

Credit: Ricardo Liberato (All Gizah Pyramids) [CC-BY-SA-2.0], via Wikimedia Commons

# Auto enhanchment

colors > auto > stretch contrast
colors > levels: auto

# Framming

select > all; shrink: 75; feather: 300; Invert

layer > new layer: transparent

FG ffffff, BG 000000
blandtool (L) > FG to BG (RGB)
shape: radial

add gradient from center to selection edge of image
mode: overlay
image > flatten image
select > none

colors > curves: S shape

# Create 3 new layers

newlayer: color fbf2a3, mode multiply, opacity 60
newlayer#1: color e865b3, mode screen, opacity 20
newlayer#2: color 0949e9, mode screen, opacity 17
image > flatten image

# Gradient (optional)

duplicate layer, mode overlay, opacity 50%
FG 000000, BG ffffff
blandtool (L) > FG to BG (RGB)
colors > map > gradient map
image > flatten image

# Reduce saturation

color > hue-saturation > saturatin > -30

Reading material:
http://docs.gimp.org/2.6/en/