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Forum: Troubleshooting and Beginner Help 08-27-2021, 12:34 PM  
D-LI 109 battery for Pentax KP
Posted By krazny
Replies: 13
Views: 728
What is the manufacturing date of the battery?

The date is written on the battery as YYYYMM
Forum: Pentax SLR Lens Discussion 07-18-2021, 12:44 PM  
Conversion to screwdrive seems to have fixed SDM (?)
Posted By krazny
Replies: 38
Views: 2,463
Two week update.

It is still alive. Was rather consistent while left on the camera.

Needed some waking up after being left of the lens for 2 and 3 days. After the second "rest" for which was three days I needed more time to wake it up than ever before.

However it works put I've come to realize that I do prefer the screw drive noise over the SDM silence.
Forum: Pentax SLR Lens Discussion 07-09-2021, 01:20 AM  
Conversion to screwdrive seems to have fixed SDM (?)
Posted By krazny
Replies: 38
Views: 2,463
Does the focus confirm hexagon in your viewfinder show any activity?

Typically when I turn on the camera and push the focus button the hexagon is dead at first and then after some focusing I notice that it may start to blink erratically and then voila!

YMMV of course.
Forum: Pentax SLR Lens Discussion 07-08-2021, 01:18 PM  
Conversion to screwdrive seems to have fixed SDM (?)
Posted By krazny
Replies: 38
Views: 2,463
Did you need to give it a moment before it kicked into action or was it instantly?

For how long are you holding the shutter/focus button or how often do you hold it for some time?
Forum: Pentax SLR Lens Discussion 07-08-2021, 12:14 PM  
Conversion to screwdrive seems to have fixed SDM (?)
Posted By krazny
Replies: 38
Views: 2,463
Did you leave it on the camera or remove it in between?
Forum: Pentax SLR Lens Discussion 07-04-2021, 05:36 AM  
Conversion to screwdrive seems to have fixed SDM (?)
Posted By krazny
Replies: 38
Views: 2,463
So checking in for the second time.

I went outside last night to take some photos of the sunset and found that my success may have been less than ideal.

I found that the SDM was somewhat inconsistent last night and it was like I was charging a capacitor to get it to work and when inactive the capacitor would drain. That is the feeling at least.


I decided to do a little experiment this morning. I re-uploaded the original lens file back to the lens through the K-5.

What happened is that the lens started focusing in screw drive and then switched over to SDM and then sort of seemed to stop working.

I tried to hold the focus button to "charge the capacitor" but all it did was to drain the camera battery. I went through two other batteries and nothing happened except for the camera claiming that the batteries were empty. I'm not sure if the lens was doing something BAD or if all three batteries were just close to empty. The latter is probable since I don't use the K-5 much and it has just been sitting.

There was a slight "OH $H*T" moment when I was trying the third battery. I tried to switch Live View on and see if it would focus that way. It started to focus and then the screen died with a lot of tearing.
I removed the lens and attached another one. There was a little flickering when I turned the camera on again so I assumed I had possibly damaged the camera. However after removing the battery and letting the camera stand for a while there doesn't seem to be any issue with the camera.


I then,somewhat reluctantly, attached the lens to KP and turned it on. No obvious issues. Battery is fully charged and no screen flickering.

When the camera started focusing it was with the screw drive. However it quickly switched to the SDM. I then turned it off and on couple of times. The sdm focusing was consistent.

I then removed the lens from the camera and waited c.a. 30 minutes. I attached the lens and at first nothing, but within 30 seconds the SDM kicked into action. I go through few cycles of turning it on and off while testing the focus. SDM mostly but sometimes it starts in screw drive but quickly jumps over to SDM.

I again removed the lens from the camera and waited over ten minutes. Awe and behold. The lens just kicks into action within few seconds.


As has been pointed out in this thread it seems that the SDM can be helped/fixed by rotating the focus ring or the screw drive. I haven't rotated either to a great extent but maybe that has helped. It is possible that these lens file exercises have nothing to do with the motor waking up. Who knows.

If you intend to try this for yourself I should add a warning. You might end up with a paperweight (or two). Take backups of all the files you use.

I guess I'll report in next weekend to see how it actually fared.
Forum: Pentax SLR Lens Discussion 07-03-2021, 02:59 AM  
Conversion to screwdrive seems to have fixed SDM (?)
Posted By krazny
Replies: 38
Views: 2,463
I uploaded the lenseep.lns files to pastebin if anyone wants to take a look at them besides UncleVanya.

60-250_original - Pastebin.com - This is the original file pulled from the lens.

60-250_edited-from_lens - Pastebin.com - This is the edited and uploaded file which I pulled from the lens.

60-250_backup - Pastebin.com - This is the backup file which is put on the sd card when I pull the lens file.

There may be a plot twist here however.

When I woke up this morning and turned on the camera the lens did not focus right away. It took a minute or longer for the lens to start to focus.

I did play a little with the lens when it arrived and at no point did it focus. However if the lens needed waking up, it is possible that enough didn't pass for that to happen before the conversion.
Forum: Pentax SLR Lens Discussion 07-02-2021, 03:04 PM  
Conversion to screwdrive seems to have fixed SDM (?)
Posted By krazny
Replies: 38
Views: 2,463
I recently bought a used 60-250 lens of Ebay.

The lens was listed as being manual focus only (SDM failure I assumed).

I was aware that I could convert it to screwdrive focusing and that I needed an older camera model to perform the conversion.

Luckily for me I have a K-5 which is suitable for the converson.

When the lens arrived I put it on the K-5 and ... nothing. The lens didn't focus, as expected.


I then followed the true and tried instructions found here: How To: Convert SDM to ScrewDrive + Video - PentaxForums.com

I was lucky enough that the conversion worked in first try. After I had uploaded the edited lens file and deactivated the debug mode I switched the K-5 off and then on again and heard that beautiful sound which is the screwdrive!

Success! I am a master hacker! Focused on few things. Success confirmed.


I then removed the lens of K-5 and attached it to my KP believing I had converted it successfully. I had not attached it to the KP before I did the screwdrive conversion (may be important).

Oddly enough the lens makes no noise but it DOES FOCUS. SDM revived?

I tried it again on the K-5. At first try, nothing happened. I switched it back to the KP and it still focuses on the KP. I again attached it to the K-5 and oddly enough if I hold the focus button for a couple of seconds the lens starts to focus, silently, Screwdrive off and the SDM lives.


Since I didn't try it beforehand on the KP I don't really know what the success is. The lens definitely did focus with the screwdrive on the K-5 but then went silent focusing on the KP.

Anyone have any idea how this managed to happen? I'd love some insights.

cheers
Forum: Pentax Camera and Field Accessories 05-15-2021, 11:36 AM  
Vanguard VT-128 tripod
Posted By krazny
Replies: 2
Views: 415
Where are those four screws?

Pictures would help.
Forum: Pentax Camera and Field Accessories 01-26-2021, 04:26 AM  
Identification of Pentax item
Posted By krazny
Replies: 6
Views: 942
I have no idea what this is. However I'd be surprised if this is a photographic accessory.

My guess is that this is related to the Pentax's medical production or optics products (binoculars and scopes)
Forum: Troubleshooting and Beginner Help 01-12-2021, 03:32 AM  
Vanguard BBH-200 ball head - mounting screw problem
Posted By krazny
Replies: 11
Views: 836
This should not be a big issue.

The adapter you broke is adapting two different sizes both of which are standardized.

You are looking for 1/4 to 3/8 thread adapters. Which are rather common.

Vanguard may make them, otherwise a general one should suffice.

Pack of 2 x 1/4" Female to 3/8" Male Conversion Tripod Head Thread Adapter Screw | eBay
Forum: Troubleshooting and Beginner Help 12-09-2020, 01:35 PM  
Pentax 60-250 mm
Posted By krazny
Replies: 36
Views: 2,298
Sometimes photographers find that images from their new camera with higher pixel count are not as sharp as the images from their older camera with lower pixel count. Could that be a factor?

Also it is possible that the the focus on the K-70 is accurate or very close to accurate and that the focus is off on the K-1. I.E. you may have to play with the autofocus adjustment settings.

Otherwise it would be better to post photos for comparison.
Forum: Photographic Industry and Professionals 10-14-2020, 12:11 PM  
Did you already mention that the next APS-C will be called K-3 Mark III?
Posted By krazny
Replies: 93
Views: 11,979
I'm not sure how you understood my post. I'm clearly saying that ISO 819200 is unusable, not that a camera that goes to 819200 is or that it is in any way reflective of rest of the camera.


I do not need to own a camera to be able to see from samples that a given iso value is utterly useless.


It becomes pretty obvious if you look at the reviews both here and e.g. dpreview. K-1 II at 819200 is as the AVGN would say "what the f*** were they thinking.


The camera is just trying to amplify the signal to the point where it is just 90% noise, 10% signal..
Forum: Photographic Industry and Professionals 10-14-2020, 07:42 AM  
Did you already mention that the next APS-C will be called K-3 Mark III?
Posted By krazny
Replies: 93
Views: 11,979
Given how utterly useless 819200 ISO is ,and that everyone realizes it, Pentax should just limit their cameras to 100k ISO and include a potato for those that want potato like image quality.
Forum: Pentax DSLR Discussion 10-14-2020, 03:09 AM  
[Satire] K-New name revealed
Posted By krazny
Replies: 32
Views: 3,572
Here it is
*
*
*
*
*
*

---------------------------------------
Pentax K-never.
---------------------------------------

Other possible candidates

K-eternity
K-4 (ever)
K-messiah (as in it will come one day)
Forum: Pentax DSLR Discussion 10-06-2020, 05:23 PM  
New Pentax KP vs. used Nikon D800
Posted By krazny
Replies: 70
Views: 5,793
I'm not sure there are very many lightly used K-1's in the 600 $ range.
Forum: Pentax DSLR Discussion 10-06-2020, 05:02 PM  
New Pentax KP vs. used Nikon D800
Posted By krazny
Replies: 70
Views: 5,793
I'm assuming you are a current pentax user.

Do you already have any Nikon lenses ?

For what it is worth you can compare IQ on dpreview. Just select the desired cameras. Seems to me that the KP is better at handling noise at high iso's.

Benchmark Performance: Nikon D810 review: Digital Photography Review
Forum: Troubleshooting and Beginner Help 08-21-2020, 02:42 AM  
Pentax K-70 and Samyang 8mm F3.5 UMC Fish-eye CS II
Posted By krazny
Replies: 7
Views: 812
If it is comparable to the other samyang rokinon lenses there should be a red 'A' (next to f22) on the aperture ring. If you set it to A, the camera should be able to mechanically control aperture. Otherwise the aperture should be set by the number chosen on the aperture ring and therefore the camera displays F--

The F-- is just the camera telling you that it is not in control of the aperture. This is displayed all the time with older manual lenses.

The blinking F-- may be the camera telling you that it doesn't detect the lens?
Forum: Photographic Industry and Professionals 06-13-2020, 12:40 PM  
Anyone know what is going on with Mapcamera Japan on Ebay?
Posted By krazny
Replies: 2
Views: 1,545
I guess the title sums it up.

One of the biggest seller of used Pentax cameras on ebay seems to have stopped selling products on Ebay. Mapcamera japan used to have a lot of cameras of all brands and now their site is more or less empty.

Does anyone know the reason? My guess would be Covid but I'd love it if anyone could shed some light on this.


P.S. possibly not posted in the right section so feel free to move it to a more appropriate section.
Forum: Pentax K-70 04-12-2020, 11:56 AM  
L-Bracket for K-70
Posted By krazny
Replies: 14
Views: 1,914
I don't have the K-70 myself but I guess dimension wise the MPU-105 is very similar to the QR11-LC.

Are you able to open the mic slot while using the MPU-105?

On the flagships (K-5 to K-3 II) the Mic port is on the top of the side so with a universal one the bracket blocks the port. However on the the K-70 and Kp the mic port is lower on the side so with an open bracket you should be able to access the port. Can you confirm this?
Forum: Pentax K-70 04-12-2020, 04:09 AM  
L-Bracket for K-70
Posted By krazny
Replies: 14
Views: 1,914
As far as I know there are no Pentax specific L-brackets so like most people you'll have to make to with a universal L-bracket.

You can buy generic ones on Ebay, made in China. They might be ok, but in my experience they are not well crafted and fit poorly into the arca swiss clamp.

I think the 3 Legged Thing QR11-LC is the cheapest (quality) universal one.

3 Legged Thing QR11-LC Universal L-Bracket (Orange) QR11-LC B&H

Fits K-5 well and no issues with arca swiss clamps. However it does cover the battery door.
Forum: Photographic Industry and Professionals 04-11-2020, 03:33 AM  
Mirrorless sales in Japan Feb 2020: Nikon virtually nonexistent; FF far behind (3.2%)
Posted By krazny
Replies: 16
Views: 1,665
As photoptimist pointed out, this statistics applies to Japan and Japan only.

And not only that, the conclusion drawn seems to be valid for february and february only.
Forum: Digital Processing, Software, and Printing 04-04-2020, 02:21 PM  
ON1 Photo on sale until April 7th.
Posted By krazny
Replies: 0
Views: 779
I didn't see any mention of this so I guess I'm the first mentioning this.

ON1 Photo RAW 2020.1 Launch Special! ON1

49.99 for the base version and two different bundles at 63.99 and 79.99 USD

I tried the ON1 Photo 2020 and found it to run rather easily and without crashing (which was a typical occurrance when I tried ON 2019 a year ago). Your milage may vary.




- No affiliation with the publisher of the software. -
Forum: Troubleshooting and Beginner Help 04-03-2020, 04:08 AM  
to keep or return that is the question.
Posted By krazny
Replies: 10
Views: 1,000
I have one 10mm Samyang/Rokinon that is definitely decentered except it shows on the right side but exactly this look.

I bought it used and my guess is that the previous owner had returned it because it was decentered.

Unfortunately I only realized what decentering was after the 30 day return period had passed.

In your case I would return it, this isn't particularily useful for astrophotography.
Forum: Video and Pentax HDSLRs 03-31-2020, 02:03 AM  
Is there an option to span multiple files for longer videos?
Posted By krazny
Replies: 20
Views: 1,954
I always thought the limit had something to do with preventing overheating inside the camera. Maybe that is wrong or only applies to certain brands.

The EU reason seems to be a very valid reason. :-)
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