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Forum: Pentax Full Frame
10-17-2017, 02:31 PM
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GPS is perfectly accurate in China (I've used my K3 II there), as it is anywhere on the globe: you get exact lat-long coordinates. However, published digital maps are skewed, that's the issue: they are off by a variable amount (order of 100s of metres) so that they don't give precise locations, unless you use an authorized conversion/encryption algorithm that the Chinese government controls.
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Forum: Repairs and Warranty Service
07-25-2017, 09:38 AM
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Your exposure mode on this shot is auto bracketing. Is that intentional?
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Forum: Photographic Industry and Professionals
02-06-2017, 04:34 PM
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That's exactly what has happened in, for example, the United States in the 20th century. Landlords systematically refused to rent to certain ethnic minorities, so whole cities were inaccessible to certain groups and there were towns where no restaurant would serve an African American. That profoundly affected the life chances of the people affected: they couldn't live in certain areas, and thus they couldn't get jobs there, and their children couldn't attend schools there. It was difficult to travel, because they had no place to stay, to eat, even to buy gasoline. Not to mention discriminatory lending by banks.
You can argue that it's just a series of individual choices by business owners, but in aggregate it created a profoundly unjust society. It also reinforced discrimination even for people who were not racist. If I owned a trucking company, for example, even if I wanted to hire an African American driver I might be reticent to do so under those conditions because it would be more difficult for them to do their job, compared to a white driver.
The civil rights movement of the 1950s and '60s forced changes that did, by almost any measure, make the world a better place. Regulations forbid discrimination on certain grounds in housing, finance, etc. (yes, they were imperfect and are still not fully enforced). It means that people had to provide services to people they didn't want to serve. Their discomfort is minor compared to the loss of life chances that millions of people suffered for generations.
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Forum: Troubleshooting and Beginner Help
02-01-2017, 03:20 PM
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Irfanview was probably only showing you the embedded preview in the raw file--which is a lower-quality JPEG--not interpreting the raw file itself. That's all many general-purpose image programs can display (and some that can interact with the raw data will still show the preview by default).
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Forum: Pentax DSLR Discussion
05-22-2016, 07:46 AM
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There's a slight advantage, beyond format futureproofing, to DNGs created from PEFs via Adobe software: they get checksums, which out-of-camera PEFs and DNGs do not have. This checksum is checked by Adobe (and possibly other) software, which will alert you when a file has been corrupted so you can restore it from backup.
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Forum: Pentax SLR Lens Discussion
07-04-2016, 09:43 PM
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How can the lens working properly on the K5 be explained? If it was just SDM failure we would not expect it to work on any camera except an older screwdrive-only one.
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Forum: Repairs and Warranty Service
04-17-2016, 09:44 AM
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Another way to check for sharpness vs bad focus is to take a picture of a textured surface or a page of text at an angle, with focus somewhere near the middle. That way some part of the subject will always be at critical focus, and you can see how sharply that renders. If it looks sharp, the issue is focus; if not, there's something wrong with the lens.
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Forum: Digital Processing, Software, and Printing
01-24-2016, 06:15 PM
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That's a well-known side effect of absinthe.
Seriously, there's clearly a bug that has caused the software to misidentify the placement of that chunk of the pipe: the highly contrasted midline and the bottom have been confused by the software. Don't have a K-3 ii so no idea what to do about it--are there any options (such as anti-ghosting) you can adjust in the software?
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Forum: Digital Processing, Software, and Printing
11-29-2015, 11:45 AM
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You can get a fast but medium-sized (e.g., 256 Gb or even 128) SSD, install your OS, software, and most importantly your Lightroom catalog on that, while keeping your images files and other documents on a larger spinning hard drive. That's probably the best storage compromise.
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Forum: Pentax K-01
04-23-2015, 10:01 PM
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The lens info is there, but in the "wrong place." It's in the Lens Type field of the Maker Notes section of the EXIF data. Looking at one of your images, I see "smc PENTAX-DA 18-55mm F3.5-5.6 AL II" in EXIFtool, which can interpret Pentax lens codes.
As for why this is happening, I couldn't tell you--it's Pentax's design of their EXIF data. I think that's where Pentax DSLRS usually put this info, and it's up to a particular piece of software to read and display it (what software are you viewing the EXIF details in?).
It's messy, but you can use EXIFtool to copy the data to the correct field--this thread has a post describing the process.
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Forum: Monthly Photo Contests
01-07-2015, 06:36 PM
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Fall reflections in False Creek, Vancouver, BC, Canada.
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Forum: Digital Processing, Software, and Printing
03-08-2014, 09:08 AM
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At least in the case I'm talking about, the problem isn't the lens or the file, it's the information Lightroom (or any other program) has about the lens. What the camera writes in the EXIF metadata is just a numeric code, not a textual description of the lens or anything else about it. The software reading that code needs to have an up-to-date database of lens codes in order to do anything with that information.
In the case of my lens, the DA L 50-200mm F4-5.6 ED WR, it is apparently not yet in the Lightroom database (but since it's optically identical to the non-L version, I can manually select that). What is happening behind the scenes is that it writes the code "7 201" in the maker section of the EXIF data, and that code isn't recognized. I figured this out with ExifTool, which has a database of Pentax lens codes (you can see them here: Pentax Tags), but doesn't yet have the DA L 50-200mm F4-5.6 ED WR (I've emailed ExifTool's creator with the info, and he updates the program pretty regularly).
So until Adobe gets the information from Pentax (or puts it into a new release of Lightroom/ACR), we will see newer (and maybe some older) lenses as "Unknown Lens," which is different from an uncoded lens: there a different codes for manual (P or K) or A lenses.
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