Technical Questions on Photography and Optics

Subject	Started by	Replies	Views	Last post
5Dll vs 1DS Markll	tony rizzo	0	2144	May 12, 2009, 04:47:17 PM by tony rizzo
Help with a "walk-around ...	DP	10	4761	May 04, 2009, 09:32:58 AM by KeithB
!.4X Extender recommendations: Canon or Kenko or Sigma ?	nycandre	5	4748	August 11, 2009, 06:33:53 AM by SidSP
"Blueprint" a lens?	Frank Kolwicz	3	344	September 21, 2011, 01:14:17 PM by Bob Atkins
"L" Lens Mount Issue	Tallyther	2	1603	January 23, 2010, 12:41:14 PM by Tallyther
1.6X crop versus full frame sensor diffraction limits with small apertures	John Hanlon	2	5072	July 01, 2008, 10:08:11 AM by John Hanlon
100% Crop	bmpress	4	3234	June 29, 2009, 09:30:52 AM by KeithB
1600mm lens for less than $180??	emanresu	0	1696	December 07, 2009, 09:55:02 PM by emanresu
18-55 for macro use but what's a better choice?	EssEll	1	2356	July 08, 2009, 08:01:34 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
5dII microadjust, 1.4x and taped contact pins	Frank Kolwicz	4	328	October 24, 2011, 08:43:34 PM by Frank Kolwicz
a couple of questions regarding GND filters	emanresu	4	668	February 01, 2011, 08:05:44 AM by emanresu
A Prime to Better the Kit Lens ?	Flash	1	213	October 24, 2011, 05:05:23 PM by Bob Atkins
a question about dithering	emanresu	9	745	July 08, 2011, 01:54:12 PM by emanresu
a question about subtractive color	emanresu	4	684	February 20, 2011, 05:30:31 AM by klindup
Adapting Jupiter - 9 85mm/T2 for Canon 7D EF body	henry temp	1	1709	December 10, 2010, 11:23:53 AM by Bob Atkins
Adjustable ND Filter	bmpress	7	1011	April 25, 2011, 06:06:51 AM by Bob Atkins
any recommendations on good GND filters? « 1 2 »	emanresu	20	2543	March 11, 2011, 04:04:03 PM by Bob Atkins
Aperture 3 vs. Lightroom	olyduck	2	992	June 18, 2011, 10:46:17 AM by deemery