Technical Questions on Photography and Optics

Subject	Started by	Replies	Views	Last post
Exposure Time Limitations on a Canon 40D	Tallyther	1	116	March 26, 2012, 09:59:31 PM by Bob Atkins
Canon 5DII and 500L/4.5 still has focus problem	Frank Kolwicz	5	207	April 01, 2012, 12:46:51 PM by Frank Kolwicz
A Prime to Better the Kit Lens ?	Flash	1	213	October 24, 2011, 05:05:23 PM by Bob Atkins
Lens Genealogy	KeithB	0	227	October 11, 2011, 12:06:00 PM by KeithB
Why not more wide angle zoom?	Patibo	2	245	February 11, 2012, 02:03:50 PM by Glenn NK
Problem with manual focussing	Frank Kolwicz	5	273	October 10, 2011, 08:51:45 AM by KeithB
5dII microadjust, 1.4x and taped contact pins	Frank Kolwicz	4	328	October 24, 2011, 08:43:34 PM by Frank Kolwicz
"Blueprint" a lens?	Frank Kolwicz	3	344	September 21, 2011, 01:14:17 PM by Bob Atkins
380 EX Flash Gun	leorcid	2	374	June 18, 2011, 10:44:04 AM by deemery
5dII and EF500/4.5L AF micro adjustment fails	Frank Kolwicz	6	393	October 17, 2011, 05:56:43 PM by Frank Kolwicz
Telextenders versus cropping and quality	Frank Kolwicz	3	414	June 28, 2011, 10:38:42 AM by KeithB
Best Case ISO	KeithB	0	445	April 28, 2011, 07:21:06 AM by KeithB
Best focal length for a whale watch	Johnf	3	581	July 07, 2011, 04:02:15 AM by Johnf
a couple of questions regarding GND filters	emanresu	4	668	February 01, 2011, 08:05:44 AM by emanresu
a question about subtractive color	emanresu	4	684	February 20, 2011, 05:30:31 AM by klindup
Image Resolution enhancement	KeithB	1	694	February 01, 2011, 08:17:23 AM by emanresu
a question about dithering	emanresu	9	745	July 08, 2011, 01:54:12 PM by emanresu
Viewfinder brightness limit	KeithB	3	753	April 21, 2011, 07:37:21 AM by KeithB
Mining T-Stop Data from DxO	KeithB	1	767	October 27, 2010, 10:45:17 AM by Bob Atkins
EOS 1.4 tele on FD500/4.5L?	Frank Kolwicz	5	768	August 13, 2011, 09:39:16 PM by Frank Kolwicz