My set currently contains two lenses that are being used frequently:

Canon EF 50mm f/1.4 USM
Focal length: 50mm (1.6x equiv.: 80mm)
Maximum aperture: 1.4
Minimum aperture: 22
Lens construction: 7 elements in 6 groups
Angle of view (horizontal, vertical, diagonal): 40º, 27º, 46º
Number of diaphragm blades: 8
Closest focusing distance: 0.45m / 1.5 ft.
Maximum magnification (x): 0.15
Focus adjustment: Overall linear extension system with USM
AF actuator: Micro USM (Mechanical full-time manual focusing built-in.)
Filter size: 58mm
Dimensions (diameter x length): 73.8 x 50.5mm / 2.9" x 2.0"
Weight: 290g / 10.2 oz.
Lens hood: ES-71 II
Price: ~ € 318



EF 50mm f/1.4 USM - 50mm f/1.8 - Compare - akam.no
EF 50mm f/1.4 USM - 50mm f/1.8 - Compare - photo.net
EF 50mm f/1.4 USM - fredmiranda.com
EF 50mm f/1.4 USM - the-digital-picture.com

Canon EF 24-70mm f/2.8L USM
Focal length: 24-70mm (1.6x equiv.: 38.4-112mm)
Maximum aperture: 2.8
Minimum aperture: 22
Lens construction: 16 elements in 13 groups
Angle of view (horizontal, vertical, diagonal): 84º - 34º, 53º - 19º30', 74º - 29º
Number of diaphragm blades: 8
Closest focusing distance: 0.38m / 1.25 ft.
Maximum magnification (x): 0.29 (at 70mm)
Focus adjustment: Front-focusing method
Zoom system: Rotating Type
AF actuator: Micro USM (Mechanical full-time manual focusing built-in.)
Filter size: 77mm
Max. dimensions (diameter x length): 83.2mm x 123.5mm / 3.3" x 4.9"
Weight: 950g / 2.1 lbs.
Lens hood: EW-83F
Price: ~ € 1138



EF 24-70mm f/2.8L USM - EF-S 18-55mm f/3.5-5.6 - Compare - photo.net
EF 24-70mm f/2.8L USM - FM Reviews
EF 24-70mm f/2.8L USM - fredmiranda.com
EF 24-70mm f/2.8L USM - the-digital-picture.com
EF 24-70mm f/2.8L USM - popphoto.com

Possible future Canon lenses

Some other interesting lenses are displayed below, but they could make my bag too heavy:

Canon EF 85mm f/1.2L II USM
Focal length: 85mm (1.6x equiv.: 136mm)
Maximum aperture: 1.2
Minimum aperture: 16
Lens construction: 8 elements in 7 groups
Angle of view (horizontal, vertical, diagonal): 16º, 24º, 28º30'
Number of diaphragm blades: 8
Closest focusing distance: 0.95m / 3.12 ft.
Maximum magnification (x): 0.11
Focus adjustment: Overall linear extension system with USM
AF actuator: Micro USM (Mechanical full-time manual focusing built-in.)
Filter size: 72mm
Dimensions (diameter x length): 91.5 x 84.0mm / 3.6" x 3.3"
Weight: 1025g / 36.2 oz.
Lens hood: ES-79 II
Price: ~ € 1829



EF 85mm f/1.2L II USM - fredmiranda.com
EF 85mm f/1.2L II USM - the-digital-picture.com

Canon EF 70-200mm f/2.8L IS USM
Focal length: 70-200mm (1.6x equiv.: 112-320mm)
Maximum aperture: 2.8
Minimum aperture: 32
Lens construction: 23 elements in 18 groups
Angle of view (horizontal, vertical, diagonal): 29º - 10º, 19º30' - 7º, 34º -12º
Number of diaphragm blades: 8
Closest focusing distance: 1.3m / 4.3 ft.
Maximum magnification (x): 0.17 (at 200m)
Focus adjustment: Inner focusing system with USM
Zoom system: Rotating type
AF actuator: Micro USM
Filter size: 77mm
Max. dimensions (diameter x length): 86.2mm x 197mm / 3.4" x 7.8"
Weight: 1470g / 3.24 lbs.
Lens hood: ET-86
Price: ~ € 1658



EF 70-200mm f/2.8L IS USM - fredmiranda.com
EF 70-200mm f/2.8L IS USM - luminous-landscape.com
EF 70-200mm f/2.8L IS USM - photo.net
EF 70-200mm f/2.8L IS USM - the-digital-picture.com
EF 70-200mm f/2.8L IS USM - popphoto.com
EF 70-200mm f/2.8L IS USM - photozone.de

Canon EF 100-400mm f/4.5-5.6L IS USM
Focal length: 100-400mm (1.6x equiv.: 160-640mm)
Maximum aperture: 4.5
Minimum aperture: 32-38
Lens construction: 17 elements in 14 groups
Angle of view (horizontal, vertical, diagonal): 20º - 5º10', 14º - 3º30', 24º - 6º10'
Number of diaphragm blades: 5
Closest focusing distance: 1.8m / 5.9 ft.
Maximum magnification (x): 0.20 (at 400m)
Focus adjustment: Rear focusing system with USM
Zoom system: Linear extension type
AF actuator: USM
Filter size: 77mm
Max. dimensions (diameter x length): 92mm x 189mm / 3.6" x 7.4"
Weight: 1380g / 3.1 lbs.
Lens hood: ET-83C
Price: ~ € 1318



EF 100-400mm f/4.5-5.6L IS USM - fredmiranda.com
EF 100-400mm f/4.5-5.6L IS USM - photo.net
EF 100-400mm f/4.5-5.6L IS USM - the-digital-picture.com
EF 100-400mm f/4.5-5.6L IS USM - popphoto.com

Canon EF 16-35mm f/2.8L USM
Focal length: 16-35mm (1.6x equiv.: 25.6-56mm)
Maximum aperture: 2.8
Minimum aperture: 22
Lens construction: 14 elements in 10 groups
Angle of view (horizontal, vertical, diagonal): 98º - 54º, 74º10' - 38º, 108º10' - 63º
Number of diaphragm blades: 7
Closest focusing distance: 0.28m / 0.9 ft.
Maximum magnification (x): 0.22 (at 35mm)
Focus adjustment: Inner focusing system with USM
Zoom system: Rotating type
AF actuator: Micro USM (Mechanical full-time manual focusing built-in.)
Filter size: 77mm
Max. dimensions (diameter x length): 83.5 x 103mm / 3.3" x 4.1"
Weight: 600g / 1.3 lb.
Lens hood: EW-83E
Price: ~ € 1238



EF 16-35mm f/2.8L USM - EF 17-35mm f/2.8L USM - Compare - luminous-landscape.com
EF 16-35mm f/2.8L USM - fredmiranda.com
EF 16-35mm f/2.8L USM - the-digital-picture.com
EF 16-35mm f/2.8L USM - popphoto.com

or:

Canon EF 17-40mm f/4.0L USM
Focal length: 17-40mm (1.6x equiv.: 27.2-64mm)
Maximum aperture: 4.0
Minimum aperture: 22
Lens construction: 12 elements in 9 groups
Angle of view (horizontal, vertical, diagonal): 93º - 49º20', 70º30' - 34º, 104º - 57º
Number of diaphragm blades: 7
Closest focusing distance: 0.28m / 0.9 ft.
Maximum magnification (x): 0.24 (at 35mm)
Focus adjustment: Inner focusing system with USM
Zoom system: Rotating type
AF actuator: Micro USM (Mechanical full-time manual focusing built-in.)
Filter size: 77mm
Max. dimensions (diameter x length): 83.5 x 96.8mm / 3.3" x 3.8"
Weight: 500g / 1.1 lb.
Lens hood: EW-83E
Price: ~ € 679



EF 17-40mm f/4.0L USM - EF 16-35mm f/2.8L USM - Compare - luminous-landscape.com
EF 17-40mm f/4.0L USM - fredmiranda.com
EF 17-40mm f/4.0L USM - the-digital-picture.com

Canon EF 24mm f/1.4L USM
Focal length: 24mm (1.6x equiv.: 38.4mm)
Maximum aperture: 1.4
Minimum aperture: 22
Lens construction: 11 elements in 9 groups
Angle of view (horizontal, vertical, diagonal): 74º, 53º, 84º
Number of diaphragm blades: 7
Closest focusing distance: 0.25m / 0.82 ft.
Maximum magnification (x): 0.16
Focus adjustment: Rear focusing system with USM
AF actuator: Micro USM (Mechanical full-time manual focusing built-in.)
Filter size: 77mm
Dimensions (diameter x length): 83.5 x 77.4mm / 3.3" x 3.1"
Weight: 550g / 19.4 oz.
Lens hood: EW-83DII
Price: ~ € 1139



EF 24mm f/1.4 USM - fredmiranda.com

or:

Canon EF 35mm f/1.4L USM
Focal length: 35mm (1.6x equiv.: 56mm)
Maximum aperture: 1.4
Minimum aperture: 22
Lens construction: 11 elements in 9 groups
Angle of view (horizontal, vertical, diagonal): 54º, 38º, 63º
Number of diaphragm blades: 8
Closest focusing distance: 0.3m / 1 ft.
Maximum magnification (x): 0.18
Focus adjustment: Rear focusing system with USM
AF actuator: Micro USM (Mechanical full-time manual focusing built-in.)
Filter size: 72mm
Dimensions (diameter x length): 79 x 86mm / 3.1" x 3.4
Weight: 580g / 20.5 oz.
Lens hood: EW-78C
Price: ~ € 1212



EF 35mm f/1.4 USM - fredmiranda.com
EF 35mm f/1.4 USM - the-digital-picture.com

Here you can find the Canon UK - EF Lenses.
Here you can find the Canon Consumer Products - EOS (SLR) Camera Systems.
I bought my lenses in Holland for a very good price: Foto Konijnenberg
Another shop with good prices: Kamera-Express

The kit-lens, that came with the 300D has to stay in the original kit shipping box, because that lens brings a lot of dust in the 300D, while zooming. It works like a pump. You can wiggle the front element! There is a lot of space, where dust can go in...
The EF 24-70mm f/2.8L USM lens is being used as walk-around-lens.