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Forum: Post Your Photos! 10-06-2013, 07:36 PM  
Nature Fall colors along the Gunella Pass Road
Posted By Mark Castleman
Replies: 3
Views: 793
It is a tricky business balancing the bright yellow with the dark evergreens without blowing out one end. The polarizer does help with the colors though at high altitudes (these were all above 8000') it doesn't take much for the sky to turn almost black.
Forum: Post Your Photos! 10-06-2013, 07:28 PM  
Landscape Morning in the Rockies
Posted By Mark Castleman
Replies: 8
Views: 734
Nice work with the reflections
Forum: Post Your Photos! 10-05-2013, 08:39 AM  
Nature Fall colors along the Gunella Pass Road
Posted By Mark Castleman
Replies: 3
Views: 793
I took these along Guanella Pass last week. I used a Cokin circular polarizer on most of these. Comments are always welcome.

Forum: Photographic Technique 09-01-2013, 08:55 PM  
Sunrise and Sunset Shoots
Posted By Mark Castleman
Replies: 13
Views: 1,913
I have this on my iMac and on my iPhone. I have found it to be a really useful app not only for the Sun but also the Moon.
Forum: Post Your Photos! 07-21-2013, 10:43 AM  
Nature Meteor Crater Panorama
Posted By Mark Castleman
Replies: 3
Views: 901
I have been quite happy with Panorama Maker. It is an easy program to use and gives good results.
Forum: Post Your Photos! 07-20-2013, 11:28 PM  
Nature Meteor Crater Panorama
Posted By Mark Castleman
Replies: 3
Views: 901
I stitched together 3 shots using ArcSoft's Panorama Maker 5 to get this image of the Barringer Meteor Crater in Arizona. It gives you some idea of the size of the hole made by a rock somewhere between 10 and 30 meters across.
Forum: Photographic Industry and Professionals 06-12-2013, 11:52 AM  
Travel Gear - my kit, what yours?
Posted By Mark Castleman
Replies: 94
Views: 11,506
I will be heading to Arizona in two weeks for a NASA symposium and we will be going to some of the areas where they have tested the Curiosity rover, which coincidentally happen to be places I like to visit: the Meteor Crater, the Grand Canyon, Lowell Observatory and the Sunset Crater Volcanic Field. I have to carry everything myself and it has to fit in the van along with everyone else's stuff so space is at a premium.

Here is what goes with me:
Pentax K20D with battery grip and 2 SanDisk 8GB SD cards
Sigma 17-70mm 2.8-4.5
Sigma 10-20mm 4-5.6
Pentax DA 55-300mm 4-5.6
Cokin filter holder and rings along with a circular polarizer and several ND filters
AF540FGz + some extra AA batteries for it
Promaster Monopod
Hahnel charger that can charge both batteries at once
Forum: Pentax DSLR Discussion 05-21-2013, 09:38 AM  
Travel: When Recommend JPEGs, not RAW?
Posted By Mark Castleman
Replies: 42
Views: 3,672
I had contemplated shooting jpeg when i go on vacation in July so that I could use my iPad to label and keyword the files rather than carrying along my MacBook. I've decided to carry the MacBook with me.
Forum: Photographic Industry and Professionals 05-17-2013, 01:19 PM  
Apple iPhone the world's most popular camera?
Posted By Mark Castleman
Replies: 89
Views: 7,069
I will be going to my school's graduation ceremony tomorrow morning and, if past years are a guide, there will be many kids where the only record of their graduation will be the images from someone's phone. For many people cell phone photos are "good enough" and that's all a lot of people demand.
Forum: Pentax DSLR Discussion 05-17-2013, 01:15 PM  
Carrying a dSLR on a motorcycle?
Posted By Mark Castleman
Replies: 25
Views: 10,327
i have carried my K20 (and the K10 before that and the *ist DL before that and a ZX-L before that) for many, many miles without incident. i do, however, carry them on the tank (not enough room) but instead strap my bag to the passenger seat. I have been on the road to Chaco Canyon so I can say with authority that a rough road did not damage anything. I was extra diligent about blowing out dust after that particular trip.
Forum: Homepage & Official Pentax News 03-02-2013, 03:15 PM  
PENTAX Hosts Open Box Sale Featuring Cameras, Lenses and Accessories at Discounted Pr
Posted By Mark Castleman
Replies: 47
Views: 7,742
There were some good deals to be had, and lots of stuff still there on Saturday afternoon. I got a 55-300mm for $182 and an AF540FGz for $189 and was tempted by a Kr kit for $225. It is nice to have a local place again where Pentax stuff can be seen and handled. They even had several 645D that one could hold and fantasize over. The sale goes on until 6 today (the 2nd) so if you are local if would definitely go by.
Forum: Post Your Photos! 12-12-2012, 11:27 AM  
Travel Ross castle - ireland
Posted By Mark Castleman
Replies: 14
Views: 957
Nice balance with the sky and the castle. You get the gloom of the sky while still showing some detail in the clouds
Forum: Post Your Photos! 12-12-2012, 11:25 AM  
Landscape St. Nickoles Coal Breaker
Posted By Mark Castleman
Replies: 7
Views: 1,049
I think the railroad tracks really add to the composition by guiding the eyes.
Forum: Post Your Photos! 12-12-2012, 11:24 AM  
Pets Cat in a hammock
Posted By Mark Castleman
Replies: 5
Views: 890
Nice use of depth of field on these. I have trouble taking photos of our cats; I soon as I think I have everything set they wander over to see what I am doing.
Forum: Post Your Photos! 12-12-2012, 11:21 AM  
Streets Christmas, Manhattan Beach Style
Posted By Mark Castleman
Replies: 7
Views: 720
I usually use shutter speeds of 1 to 3 seconds for the fireworks and adjust the black point in Aperture. Fireworks are one subject I never really tried with film but enjoy capturing digitally.
Forum: Photographic Industry and Professionals 10-07-2012, 12:33 PM  
Pentax Marketing in US
Posted By Mark Castleman
Replies: 2
Views: 1,331
For the first time in several years there is a place in Colorado (home to Pentax USA) where you can actually see the cameras. Denver Pro Photo has K-01, K30 and K5 in stock as well as a few lenses. It's a start.
Forum: Post Your Photos! 08-07-2012, 08:42 PM  
Food One of these things is not like the others
Posted By Mark Castleman
Replies: 3
Views: 750
Some more fun with brightly colored vegetables at the Farmer's Market. I was drawn in by the one green one in the midst of all the red ones.
Forum: Post Your Photos! 07-24-2012, 10:16 PM  
Food Vegetarian Food Porn
Posted By Mark Castleman
Replies: 1
Views: 720
I took these at the Broomfield Farmer's Market which is hosted by the Church of the Holy Comforter. I've never taken food photos like these but I really liked the colors and the shapes.

Sigma 17-70mm 1/20 f/6.7

Sigma 17-70mm 1/30 f/6.7

Sigma 17-70mm 1/15 f/6.7

Sigma 17-70mm 1/90 f/4.5

Sigma 17-70mm 1/45 f/6.7

Sigma 17-70mm 1/180 f/4.5
Forum: Post Your Photos! 07-05-2012, 07:35 PM  
Night More fireworks.
Posted By Mark Castleman
Replies: 2
Views: 550
You were fortunate to have a spot where there was something visible on the ground. Without that fireworks tend to just be abstract color compositions. My best ones were from last year when I saw then shot off over the Atlantic in Flagler Beach FL.
Forum: Post Your Photos! 07-04-2012, 10:13 PM  
Night Some obligatory fireworks photos
Posted By Mark Castleman
Replies: 2
Views: 697
Most cities along the Front Range, for very good reasons, cancelled their fireworks this year. Broomfield and a few other places had safe enough places to shoot them off and did so. These were taken from about 1/2 mile away with apertures ranging from f/4.5 to f/8. The images were cropped and the black point was adjusted in Aperture 3.3.

Forum: Photographic Technique 06-20-2012, 09:28 PM  
Tetons and Yellowstone, where to go?
Posted By Mark Castleman
Replies: 7
Views: 1,089
I would definitely not miss Upper and Lower Yellowstone Falls. If you have to choose between Norris and West Thumb thermal areas, and it sound like you will, I would go with the West Thumb.
Forum: Post Your Photos! 06-06-2012, 11:10 AM  
Nature Sunset with Venus
Posted By Mark Castleman
Replies: 1
Views: 614
I used a solar filter and cropped the heck out of this. The Sun is setting over the Anvil Cliff NW of Rifle, Colorado.

Forum: Photographic Technique 05-23-2012, 08:20 PM  
Venus Transit June 5 2012 (North America)
Posted By Mark Castleman
Replies: 19
Views: 2,231
I took my photos of the eclipse using a solar filter over the end of my Pentax 300mm. I had the camera on a tripod so that I could shoot at ISO 100 and then cropped the images as needed afterward. The key with a solar filter is that it reflects a very large fraction of the light, including UV and IR. An ND filter will let through more IR which can heat up your optics.
Forum: Post Your Photos! 05-22-2012, 09:29 PM  
Landscape New Mexico Eclipsed Sunset
Posted By Mark Castleman
Replies: 1
Views: 593
Most of my eclipse photos were taken through a solar filter and are thus just the Sun against a black background. As the Sun set it was possible to take some shots without the filter. This was taken from the South Aircraft Viewing Area just outside the fence of the Albuquerque airport. I think that is Mt Taylor on the horizon.

Forum: Post Your Photos! 05-05-2012, 10:36 PM  
Landscape Ocean Beach Pier at Sunset
Posted By Mark Castleman
Replies: 1
Views: 717
I took this at the end of March when I was in San Diego on my Spring Break. It is just one exposure; I tried some HDR shots but the heavy surf made for way too many ghosts. Comments and critiques are welcomed.

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