Technical Questions on Photography and Optics

Subject	Started by	Replies	Views	Last post
Article about the eye as an optic system	KeithB	0	3106	February 25, 2009, 03:04:44 PM by KeithB
astrophotography	jamisan	3	1572	November 07, 2010, 03:45:40 PM by klindup
Auto Focus Technology for Low Light Moving Subject Shooting	427l	3	5938	February 23, 2009, 10:15:00 AM by Bob Atkins
Best Case ISO	KeithB	0	1077	April 28, 2011, 07:21:06 AM by KeithB
Best focal length for a whale watch	Johnf	3	1492	July 07, 2011, 04:02:15 AM by Johnf
Blurry Advice	FlashManAB	2	3704	February 24, 2009, 12:29:20 AM by FlashManAB
Canon 20D and EF12II, EF 25II	my1947	4	4800	February 24, 2009, 01:17:37 PM by my1947
canon 24mm f2.8	streetshooter	1	5089	September 04, 2008, 11:26:29 AM by Bob Atkins
Canon 25mm Extension Tube.	Leong	1	5816	August 21, 2008, 11:36:30 AM by Bob Atkins
Canon 40D AF Issues - What are my options?	gkmusser	3	5074	June 17, 2009, 04:59:43 PM by Bob Atkins
Canon 40D picture quality issue!	Tallyther	1	2350	March 07, 2010, 07:21:51 PM by Bob Atkins
Canon 5DII and 500L/4.5 still has focus problem « 1 2 »	Frank Kolwicz	19	2810	August 10, 2012, 06:14:55 PM by Frank Kolwicz
Canon 70-300 vs Sigma 120-400	ricojones	2	5061	January 15, 2010, 06:50:02 PM by ricojones
Canon 70-300mm IS	GeneS	3	4933	January 11, 2009, 07:05:00 AM by bmpress
Canon EF 100mm f2.8 marco usm VS Sigma 105mm f2.8 macro	Beachduffer	3	5437	June 17, 2009, 10:15:20 AM by Bob Atkins
Canon IS effectiveness: amplitude and frequency	Frank Kolwicz	7	120	May 22, 2013, 11:40:05 AM by Frank Kolwicz
Canon Macro Lens	Beachduffer	4	4245	June 20, 2009, 08:12:22 AM by Beachduffer
Canon PowerShot A720 IS	j cowan	1	2705	May 16, 2010, 11:11:01 AM by Bob Atkins
canon rebel direct to laptop	bubba622	4	5206	February 20, 2009, 02:29:05 PM by KeithB
Canon XTi flash	bgclight	5	4716	June 24, 2009, 08:34:49 AM by bgclight