DIY Pinhole camera

http://www.pinhole.cz/en/pinholecameras/dirkon_01.html

lens test - 50mm vs 50mm

http://www.pbase.com/miljenko/50mm_vs_50mm

Hong Kong Sports Photography Association

http://www.hksp.org/Home.php?L=E

mid-tele & wide zoom

Mid-tele
N: AF-S VR 70-200mm f/2.8G IF-ED 黑 (11k)
N: AF 70-300mm f/4-5.6G (750)
N: AF 70-300mm F/4-F/5.6 D ED (2.1k)
N: AF 80-200mm f/2.8D ED (6.4k)
S: AF 70-300mm f/4.0-5.6 APO Macro SUPER II (1.2k)
Ta: AF 70-300mm f/4-5.6 LD Marco 1:2 (1.2k)

Wide zoom
N: AF-S DX 12-24mm f/4G IF-ED (6.5k)
S: Sigma AF 10-20mm (3.2k)
To: AF 12-24 DX (3.5k)

d70s-->d200

am thinking to upgrade my d70s to the very wanted d200 & found some comparison on web... to my surprise, it doesnt look like d200 is very much more than d70s.

http://www.pcmag.com/compare_products/0,1943,,00.asp?a=173059,135274,153535,136040,30875,158039,158127,163869&pt=10&sid=1563

http://www.bythom.com/d200review.htm

http://www.kenrockwell.com/nikon/d200-vs-nikon.htm

REVISED:

D200 Benefits
+ Superior ergonomics: the D200 has single-purpose buttons for the Three Kings (QUAL, WB, ISO) while the D70s combines them with playback function buttons. The D200 even adds a user programmable function button!

+ YRGB Histograms! Single histograms are useless because they can't show when just one channel clips, at which point your image is crap. The YRGB histogram of the D200 for the first time, in addition to the D2X, allows you to look at the histogram to check overexposure. I need to write an article explaining this. For now just check all four histograms and ensure that none of them clips the highlights. You can see highlights clipping on a histogram when it bunches up on the right side of the graph. These useful histograms are one of the big reasons I'm getting a D200 to replace my D70.

+ Four banks of setting memories for fast swapping between groups of camera settings.

+ Superior durability. The D200 is metal and gasketed against the weather, while the D70s is plastic.

+ Almost twice as fast (5 vs. 3 FPS).

+ More AF zones.

+ Built-in flash can address and control multiple groups of remote wireless flashes; D70/D70s only controls one remote flash channel.

+ Most likely faster at everything.

+ More flexible White Balance, critical to great images.

+ Huge viewfinder, adds ISO indication.

+ The D200 works well with manual focus lenses, the D70 doesn't.

+ The MH-18a charger is a little bit smaller than the slightly older MH-18 charger of the D70.

+ No useless "Scene Modes" (Portrait, Night Scene, Flower, etc.) cluttering the control panels.

from http://www.kenrockwell.com/nikon/d200-vs-nikon.htm