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Forum: Pentax K-1 & K-1 II
04-06-2024, 10:00 AM
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Thanks for telling me about the 77 meter segments - something I didn't know about. After a bit more poking about I think I'm beginning to understand what these arrays of numbers are all about.
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Forum: Pentax K-1 & K-1 II
04-06-2024, 02:49 AM
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In the EXIF data of my PEF images are three items that I am curious about: AE Metering Segments, Flash Metering Segments and Slave Flash Metering Segments. They each consist of a big list of floating point numbers. Does anyone know where they come from and what they mean please?
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Forum: Pentax K-1 & K-1 II
11-06-2022, 04:09 AM
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Oh OK thanks for the info. I thought the camera would just take multiple readings from all the pixels as quickly as possible over the the period of the exposure, averaging them out as it goes and then stop. Well I don't need to know how it really works, I have never made any use of LV ES in the past and will probably never use it again but it would have been very handy to have had a silent camera a few days ago in a quiet public place.
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Forum: Pentax K-1 & K-1 II
11-06-2022, 01:41 AM
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Why does my K1mk2 make clonking noises when using LV Electronic Shutter? I would have thought nothing physical inside the camera would need to move in LV ES mode but I'm obviously wrong.
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Forum: Pentax K-1 & K-1 II
04-21-2022, 08:47 AM
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Be careful: it was a metering impact what killed the dinosaurs wasn't it?
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Forum: Pentax K-1 & K-1 II
03-22-2022, 04:24 AM
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Did they manage to save them? Was the level of drama about right?
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Forum: Pentax K-1 & K-1 II
03-07-2022, 02:17 AM
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I was wondering if, because the problem is not being able to remove the lens, that it's the lens removal mechanism that is broken and that the lever that appeared in your picture is part of that mechanism. I took the lens off my K1mk2 and tried to see what happens when I press the lens release button but I couldn't see anything moving except the focusing pin.
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Forum: Pentax DSLR Discussion
02-22-2022, 03:19 AM
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Thank you, it's working now. You were right about the dependencies; there were a couple that had gone missing. There is also a vital extra attribute that needs to be added to the application tag in AndroidManifest.xml:
android:usesCleartextTraffic="true".
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Forum: Pentax DSLR Discussion
02-20-2022, 06:05 AM
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The tablet is a Samsung S7 FE. To test the feasibility, I installed an old apk that was made a few years back and although there were warnings about "maybe won't run properly" it runs OK (connects to the K1mk2 camera and takes pictures) so I assumed that if I could make a new one it would run OK too. So I am using Android Studio Arctic Fox 2020.3.1 Patch 4 on OpenSuse 15.3 to build it. I had to change a few things to get it to compile e.g. the repositories changed from jcenter to google but now it runs OK as far as showing the starting screen but clicking the connect button causes it to crash. Stepping through the code I get to this call
public class CameraDeviceDetector {
private static final CameraDeviceDetector.AccessWiFiDetector WIFI_DETECTOR = new CameraDeviceDetector.AccessWiFiDetector();
and there it ends with a crash.
I conclude that something is wrong with the way the library ricoh-camera-wireless-sdk-1.1.0.jar is being compiled into the project and that maybe the code isn't there or is in the wrong place at run time.
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Forum: Pentax DSLR Discussion
02-19-2022, 09:24 AM
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I just tried to use Android Studio to build the Ricoh app but I just can't get the thing off the ground at all. It crashes when it tries to connect to the camera.
This is where it fails:
List<CameraDevice> detectedList = CameraDeviceDetector.detect(DeviceInterface.WLAN);
Has anyone had any success with it recently? Perhaps it's just unusable due to age. Or is it _my_ age that's the problem?
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Forum: Pentax K-1 & K-1 II
06-28-2021, 06:56 AM
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I used the Ricoh SDK and added a function to the CLI program to take a series of shots, changing the focus point each time. I enter the number of steps I want, both before (stepsFront) and after (stepsBack) the natural focus point, and the size of the steps (stepSize) and then call the functions to perform the sequence:
First focus normally with the Focus() function
Call StartLiveView()
Call AdjustFocus() to move the focus stepsFront * stepSize so the focus is at the start of the desired range
Then loop over the range
{
CaptureWithoutFocus
AdjustFocus stepSize
}
Stop LiveView
The AdjustFocus function only works in Live View.
It works pretty well. I stack the shots with Zerene.
Cactus flowers | Focus stack using Zerene | Graham Dicker | Flickr |
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Forum: Pentax K-1 & K-1 II
06-24-2021, 04:31 AM
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What happens when the mirror hits the lens? Does it get damaged? Or is there a way to measure the lens first and check it against a published limit? I see there is no caution in the user manual saying anything about clearances for the back of the lens.
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Forum: Pentax K-1 & K-1 II
10-24-2020, 02:07 AM
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Oh dear! Sorry! I just had a revelation this morning. I should have been looking at Picture Mode, not Exposure Program. Then I would have seen that for the pictures I was referring to in my OP the output from ExifTool included the line:
Picture Mode : Shutter & Aperture Priority AE; 1/3 EV steps
This will have been derived from the manufacturers private data. My existing ExifTool version is adequate and I don't need to update it. I just have to remember to ignore Exposure Program and use Picture Mode instead. I can only apologise for misleading you all.
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Forum: Pentax K-1 & K-1 II
10-23-2020, 03:02 PM
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That would be the ideal next move but I'm unsure about installing stuff that is not an official update from Opensuse. I might just try replacing the Pentax.pm module in the Image Perl library and see what happens. That way should be relatively safe and easy to undo if it doesn't work.
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Forum: Pentax K-1 & K-1 II
10-23-2020, 05:52 AM
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Yes thanks. I may well indulge in a bit of hacking to my copy of ExifTool (which I use to display EXIF data). It knows there is a camera called the K-1 but it doesn't know about the mk2 and obviously doesn't know about TAv mode either. Something to do during Coronavirus lock-down anyway!
Thanks to all who replied.
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Forum: Pentax K-1 & K-1 II
10-23-2020, 01:52 AM
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I used a user mode for some shots yesterday which is programmed to Shutter Priority and Shutter Priority is what it says when I display the EXIF data.
---------- Post added 10-23-20 at 02:00 AM ----------
Yes! That's it. I just now tried it. TAv. Good grief - I had no idea that I had ever used it. Thanks very much.
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Forum: Pentax K-1 & K-1 II
10-22-2020, 07:26 AM
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Most of my photography is done with the K1 mk II set on Aperture Priority and that's what it says in the EXIF most of the time - with an occasionall 'Manual', 'Shutter Priority', 'Auto' here and there. But I have just noticed that there are quite a few shots in my archive where the EXIF data says Exposure Program 'Not Defined'. In one particular case this is quite annoying because I would really like to know what the setting was when the shot was taken. Does anyone know what setting causes Exposure Program to say 'Not Defined' please?
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Forum: Pentax K-1 & K-1 II
08-23-2020, 01:23 AM
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Thank you very much. I have ordered a JJC FC-P3 from an ebay seller for £8.25 which (if it arrives and it works) seems very reasonable compared to £99.99 just for the F5P cable from SRS Microsystems.
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Forum: Pentax K-1 & K-1 II
08-22-2020, 02:38 AM
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My Sigma EF-610 DG Super flash gun works fine when slotted in to the hot-shoe of my K1 mk 2 but can anyone tell me what kind of cable or gadget I would need to use it off-camera please? The flash does not have any special sockets; just the hot-shoe.
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Forum: Pentax K-1 & K-1 II
04-06-2020, 02:16 AM
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No, the highlights are totally blown. But there is plenty of detail in the shadows. So I took the -3EV image out of the HDR file into RT and yes, I can boost the shadows and it looks pretty much like the HDR image! This is most interesting. I will try some more experiments today. Nothing much else to do while we are under house arrest anyway.
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Forum: Pentax K-1 & K-1 II
04-05-2020, 02:28 AM
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It does help with a massive dynamic range like the shot below. The first image is a single shot. The second image is a 3 EV bracket with the shots separated with DCU5 and then merged using enfuse.
 imgp3818t by Graham Dicker, on Flickr
 enfusedhdr by Graham Dicker, on Flickr
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Forum: Pentax K-1 & K-1 II
04-04-2020, 06:36 AM
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Bear in mind that it doesn't matter what HDR mode is set, the camera always takes the same three raw exposures. It is only in the development of a JPEG in camera that the mode becomes relevant and results in very different looking images. If you split the three images using DCU5 and combine them using some other software, then again it doesn't matter what HDR mode (auto, 1,2,3,adv) you had when you took the picture, the result will be the same because the three raw files will have had the same exposures e.g. 0,-3 and +3 (or whatever bracketing was set). The mode does make the thumbnails look different of course as these are also in-camera JPEGS.
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Forum: Pentax K-1 & K-1 II
11-24-2019, 02:40 AM
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I guess they will probably call that last one a senseless camera...
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Forum: Monthly Photo Contests
08-03-2019, 12:59 AM
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I would like to nominate this photo
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Forum: Monthly Photo Contests
07-02-2019, 01:04 AM
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