Photography Sub-Categories

Sierra College photo field trip to Mono Lake

2 galleries with 44 photos.

Updated: Oct 28, 2006 1:51pm PST

Nevada County Camera Club

5 galleries with 51 photos.

Updated: Jun 28, 2005 10:53pm PST

Photography Galleries

Adobe Camera Raw 5.5 bug? : I upgraded to Lightroom 2.5 yesterday (9/20/09), which includes an upgrade to Adobe Camera Raw 5.5. I started to see a purple artifact appear in highlights after making an edit. (I haven't yet investigated enough to identify which editing tool triggers the artifact, or perhaps all of them.) Even when I revert the History to the original Import step the purple artifact remains visible on screen, however. (I'm working with ORF files from the E-510. ORF is Olympus' RAW format.) When I use the 'Edit in' command in LR to open the same file in Photoshop CS4 11.0.1 without LR edits, the highlights artifact remains. LR instructed me to upgrade ACR to 5.5 in Photoshop, for compatibility with LR 2.5, which I did before opening the first file. When I later opened the same ORF file straight from PS, it contained the highlights artifact. When I saved a JPG from LR, the artifact remained in the JPG file (a crop is shown in the first image below). Opening the JPG in Apple's Preview shows that the artifact is at the pixel level - it is there without using an Adobe product to view the image. Therefore the bug is not restricted to viewing images, but also to processing and saving images. To test whether the ORF (RAW) file had been altered by LR, I opened it in LightZone 3.8. The highlights artifact is NOT present in the image processed by LightZone (only), as can be seen in the second JPG image below, which was cropped approximately the same way. Therefore the Adobe products did not alter the ORF (RAW) file. Because the artifact is present in two Adobe products that depend on ACR 5.5, the bug must be in ACR 5.5. I suspect the bug in ACR 5.5 is caused by improper normalization of the R, G and B channels at the bright end of the histogram, so that color balance is not retained when one channel is blown.

Adobe Camera Raw 5.5 bug?

I upgraded to Lightroom 2.5 yesterday (9/20/09), which includes an upg ...

Updated: Sep 20, 2009 10:36am PST

Advanced Photoshop class at Sierra College with Randy Snook :

Advanced Photoshop class at Sierra College with Randy Snook

Updated: May 31, 2009 9:37am PST

Other folks' photos :

Other folks' photos

Updated: Jan 23, 2009 11:41am PST

2008.12.06 Nevada County Camera Club Christmas dinner :

2008.12.06 Nevada County Camera Club Christmas dinner

Updated: Dec 17, 2008 11:31am PST

Test mats w/ gold line mahogany frames :

Test mats w/ gold line mahogany frames

Updated: Dec 11, 2008 4:39pm PST

2008.10.10 The Shape of Our Lives by Kate Moore Nachtrieb #01 :

2008.10.10 The Shape of Our Lives by Kate Moore Nachtrieb #01

Updated: Oct 10, 2008 10:16pm PST

2008.09.01 My show at Cafe Mekka, just before taking down :

2008.09.01 My show at Cafe Mekka, just before taking down

Updated: Sep 05, 2008 12:26pm PST

2008.08.03 Unrated photos for Eschappé Dance Art Theatre :

2008.08.03 Unrated photos for Eschappé Dance Art Theatre

Updated: Aug 27, 2008 4:43pm PST

Experiments with fine-art printing :

Experiments with fine-art printing

Updated: Aug 18, 2008 8:40pm PST

2008.08 Nevada County Fair :

2008.08 Nevada County Fair

Updated: Aug 05, 2008 5:52pm PST

2008.08.03 Photos for Eschappé Dance Art Theatre :

2008.08.03 Photos for Eschappé Dance Art Theatre

Updated: Aug 03, 2008 6:01pm PST

Candidates for Nevada County Fair 2008.08 :

Candidates for Nevada County Fair 2008.08

Updated: Jul 11, 2008 3:10pm PST

Candidates for fine art prints at Briar Patch gallery in April 2008 :

Candidates for fine art prints at Briar Patch gallery in April 2008

Updated: Apr 06, 2008 6:17pm PST

Minimalism :

Minimalism

Updated: Mar 12, 2008 11:58pm PST

2008.02.24 Surfers on storm waves, Pacific Grove, Monterey Bay :

2008.02.24 Surfers on storm waves, Pacific Grove, Monterey Bay

Updated: Feb 27, 2008 8:32pm PST

2008.02.24 Monterey Bay Aquarium :

2008.02.24 Monterey Bay Aquarium

Updated: Feb 27, 2008 8:17pm PST

2008.02.24 Pacific Grove & vicinity of Monterey Bay Aquarium :

2008.02.24 Pacific Grove & vicinity of Monterey Bay Aquarium

Updated: Feb 27, 2008 8:10pm PST

2008.02.23-24 Stormy California coast :

2008.02.23-24 Stormy California coast

Updated: Feb 27, 2008 8:01pm PST

2008.02.23 Sea lions from Hwy 1, north of San Simeon :

2008.02.23 Sea lions from Hwy 1, north of San Simeon

Updated: Feb 27, 2008 5:51pm PST

2008.02.23-24 Pasadena to SF via coast hwy :

2008.02.23-24 Pasadena to SF via coast hwy

Updated: Feb 26, 2008 1:15am PST

2008.02.12-13 Mono Lake to Manzanar on Hwy 395 :

2008.02.12-13 Mono Lake to Manzanar on Hwy 395

Updated: Feb 17, 2008 1:12pm PST

Workflow experiments :

Workflow experiments

Updated: Jan 27, 2008 7:00pm PST

Advanced Photoshop class at Sierra College, Fall 2007 :

Advanced Photoshop class at Sierra College, Fall 2007

Updated: Dec 05, 2007 10:16pm PST

CD cover for Tom Wernigg - Already Home :

CD cover for Tom Wernigg - Already Home

Updated: Nov 27, 2007 9:49pm PST

Sikh Festival, Yuba City 2007.11.04 :

Sikh Festival, Yuba City 2007.11.04

Updated: Nov 17, 2007 12:14am PST

Tests of E-3 RAW files from Web :

Tests of E-3 RAW files from Web

Updated: Nov 03, 2007 1:38pm PST

2007.10.21 Experiments with multiple ACR processing :

2007.10.21 Experiments with multiple ACR processing

Updated: Oct 21, 2007 12:54pm PST

2007.09.05 Fire sun :

2007.09.05 Fire sun

Updated: Sep 05, 2007 9:41pm PST

2007.08.28 Lunar total eclipse :

2007.08.28 Lunar total eclipse

Updated: Aug 29, 2007 3:27pm PST

Tests of macro lens combos on Cinema Display :

Tests of macro lens combos on Cinema Display

Updated: Aug 26, 2007 6:28pm PST

Lunar HDR experiments :

Lunar HDR experiments

Updated: Aug 24, 2007 9:56pm PST

Test of 3 RAW workflows : RAW (ORF) files from the Olympus E-510 were processed with 3 different workflows. Filenames are appended with A, B or D, depending upon workflow. A: RAW Developer 1.7 > PSD file > Photoshop CS3 > JPG file, downsized B: Adobe Camera Raw 4.1 > Photoshop CS3 > PSD file > JPG file, downsized D: Olympus Master 2 > TIFF file > Adobe Camera Raw 4.1 > Photoshop CS3 > JPG file, downsized No attempt was made to duplicate images with different RAW processors. Rather, each image was processed to produce the best image I could. I make no claims to consistency. I had never used RAW Developer before, so the A files could be better. To my eye, they already are better than those produced by the other workflows.

Test of 3 RAW workflows

RAW (ORF) files from the Olympus E-510 were processed with 3 different ...

Updated: Aug 18, 2007 12:24am PST

2007.08.08-12 Nevada County Fair :

2007.08.08-12 Nevada County Fair

Updated: Aug 01, 2007 5:11pm PST

Missile anus closeups :

Missile anus closeups

Updated: Jul 28, 2007 10:40pm PST

2007.07 NC Coho bluebirds :

2007.07 NC Coho bluebirds

Updated: Jul 09, 2007 6:52pm PST

E-510 ISO 1600 Raw images converted JPGs in three different ways :

E-510 ISO 1600 Raw images converted JPGs in three different ways

Updated: Jun 20, 2007 6:43pm PST

2007.06.15 Experiments with DxO FilmPack :

2007.06.15 Experiments with DxO FilmPack

Updated: Jun 15, 2007 10:12pm PST

2007.06.08 First 3 hours with 7-14 mm dZuiko lens :

2007.06.08 First 3 hours with 7-14 mm dZuiko lens

Updated: Jun 08, 2007 11:59pm PST

DPR Olympus Talk forum, my photos :

DPR Olympus Talk forum, my photos

Updated: Apr 15, 2007 9:29pm PST

2007.04.07 Egg 'n beans for Easter :

2007.04.07 Egg 'n beans for Easter

Updated: Apr 07, 2007 11:38pm PST

2007.03.30-31 San Francisco / Debby :

2007.03.30-31 San Francisco / Debby

Updated: Apr 02, 2007 2:59pm PST

NASA photos :

NASA photos

Updated: Feb 05, 2007 8:52am PST

Mono Lake trip with Sierra College photography class :

Mono Lake trip with Sierra College photography class

Updated: Oct 18, 2006 9:18pm PST

Natural Phenomena :

Natural Phenomena

Updated: Jul 10, 2005 12:11am PST

PAW (Picture A Week) - DPR Olympus SLR Talk forum : Artsy-fartsy photos and those intended for display in online photo forums

PAW (Picture A Week) - DPR Olympus SLR Talk forum

Artsy-fartsy photos and those intended for display in online photo for ...

Updated: Jan 18, 2005 11:43pm PST

Heavy Metal :

Heavy Metal

Updated: Nov 30, 2004 10:32pm PST

Wheels :

Wheels

Updated: Nov 24, 2004 4:03pm PST