Forgot Password
Pentax Camera Forums Home
 

Showing results 1 to 25 of 63 Search:
Forum: Pentax K-30 & K-50 04-25-2019, 08:35 PM  
K-30 Aperture Solenoid Fix
Posted By keos
Replies: 14
Views: 995
aren't there now reports of similar problems befalling the K-70? I guess one could explain away 2 iterations of a product with the exact same failure, but 3 generations is getting a bit out of hand.
Forum: Pentax K-5 04-14-2019, 04:21 PM  
K5-IIs debug mode
Posted By keos
Replies: 3
Views: 626
I finally got it. Had to put [OPEN_DEBUG_MENU] in the file and a separate new line. whoops :asleep:
Forum: Pentax DSLR Discussion 04-14-2019, 04:19 PM  
(Un)popular Opinion: Pentax AF Doesn't Suck
Posted By keos
Replies: 197
Views: 10,389
suck compared to what? part of the problem is I think on the older cameras AF was not very consistent unless you had a bright sunny day (K200D/K10D, etc). It made me move to a Canon 40D for a long time. When I upgraded that camera to another Canon I had no idea what any of the focus settings meant and got crap results until I figured out how to use the settings. Same thing when I got a K3-II. Had to fiddle around with the settings until I got it just right. Part of the problem with any comparison is how knowledgeable you are in the camera system you're comparing to. I got a Nikon D7200 for giggles; I couldn't focus with it because I had no idea how its focus setting worked.

As far as my experience, once I finally got used to how the cameras worked, the speed of the lens became another factor. Canon's USM on their L family glass is great. Their STM on their consumer lineup is... better for video and the recofusing after defocusing effect. Pentax's old SDM lenses are incredibly slow, any comparison using them will be sure to weigh down the system. Once I got comparable lenses to test (sigma 17-50mm, sigma 35mm art, sigma 30mm art, etc.), I found the lenses themselves to vary too much for anything meaningful (esp the 30mm, why was this not in any review????). The only real apples to apples comparison I've used (at least I think) is the Tamron 24-70 vs the Pentax 24-70, and using that I find the 7Dmk2 to be slightly better than the K3-II when I was shooting a bunch of kids running around at a party, but it could also get a bit inconsistent (meaning it would latch on, but here were times where it would miss for a while, while the K3-II more more consistent in its missing, if that makes sense, maybe due to Tamron not being a native OEM AF solution). with a Canon 70-200 vs the Pentax 70-200 I found the 7D2 to be more consistently better. oh, and DPAF on Canon is legit in video; even using the sigma 17-50mm OS (I have an older version with it) to remove shake, there is no hope to compare the two systems.


The problem with any comparison is that when one system wins, it's automatically assumed the loser can't do the same task (well except Pentax for video, it's there just to check a marketing box it feels like). I don't think that's the right conclusion to draw. The winner should make the job easier, taking the pressure of thinking and more just pressing a button to get the results. But the converse isn't true either; when the system of your choice loses it doesn't mean it's always the fault of poor technique, it could mean that the other system makes getting the right results much easier. I remember the first time I used an a6500 for a portrait shoot and was amazed I didn't need to think about moving AF points, just compose the image with the model and make sure she gave me an eye for the system to latch on to. It didn't mean Pentax or Canon can't take portraits, it just means the Sony made it that much of an easier experience. But me having that opinion doesn't mean I don't have good technique with a Canon or Pentax (or Nikon, but god damn whoever designed that UI must've been poached by Sony).

So in short, is the AF technology in modern Pentax bodies bad? No. Does it suck? No. Can other systems achieve the same results/better results with less effort? In some cases, yes. In AF-S, the first time I put on the 70-200mm on a Pentax, I was floored by the almost instant AF. the 55-300 PLM is just amazing; I would rate it right up there with any other system. For AF-C tracking, it does get the job done, but doesn't mean some other camera system might not make it easier for a beginner (or a seasoned pro).
Forum: Pentax K-5 04-13-2019, 11:01 AM  
K5-IIs debug mode
Posted By keos
Replies: 3
Views: 626
Tried to use the DEVELOP.MOD and 00077681.541 file trick but can't get debug mode to come up. Anyone know of any other way besides pktether?
Forum: Pentax SLR Lens Discussion 04-05-2019, 06:18 PM  
Focus Shift
Posted By keos
Replies: 8
Views: 616
Canon's 50mm 1.2 is problematic in portrait distance scenarios, so it's quite severe.
the 70-200mm f4l IS also had slight softness at headshot distances, I couldn't figure out why I was sharper at f4 vs f8 thought my lens was bad, bought another one and it was similar.
so that's why I asked my question. for landscape, typical sporting, street, etc it probably won't be a factor. anything with closer distances will likely be more apparent due to decreased DoF.

I haven't used my Pentax as much as Canikon gear for portraits, but in my limited testing the 70-200 D FA* did not appreciably focus shift.

I wish lens reviewers would test this more explicitly.
Forum: Pentax SLR Lens Discussion 04-05-2019, 01:54 PM  
Focus Shift
Posted By keos
Replies: 8
Views: 616
Has anyone noticed which Pentax/3rd party lenses are prone to focus shift?

I bought a Canon 70-200 f4l IS a while back and could never get sharp images stopped down at 200mm, and could never figure out why. I finally found the explanation with this article. Quantifying Lens Focus Shift with Reikan FoCal | Reikan FoCal Blog Automatic Lens Calibration Software

I thought only the 50mm F1.2L was susceptible, but it looks like many lenses could potentially suffer from this issue.
Forum: Digital Processing, Software, and Printing 04-04-2019, 09:49 PM  
DCU5 in Linux
Posted By keos
Replies: 13
Views: 705
try to edit a photo. it crashed for me until I figured out the faulting module was wmp.dll and that's why I figured installing wmp would solve it, and it did. So if that works the rest of the program should work, within reason.
Forum: Pentax SLR Lens Discussion 03-26-2019, 09:32 PM  
What's the highest rated lens you own according to PF?
Posted By keos
Replies: 111
Views: 4,597
HD Pentax-D FA* 50mm AW SDM

It is heavy for a normal lens; took it on a photo shoot and kept reaching for the 77mm to save my arms, only to be pulled back by the image quality. it is tack sharp and exposed an AF issue on my K1-II which has been in the repair shop for 7 weeks. So not sure whether to like it or hate it. That reminds me, I should register the lens.
Forum: Digital Processing, Software, and Printing 03-26-2019, 07:34 PM  
DCU5 in Linux
Posted By keos
Replies: 13
Views: 705
if it doesn't work with crossover, playonlinux will allow you to download its own version of wine that is self contained in the user's home directory as well. another reason I use it, since Canon DPP breaks after wine 3.5
Forum: Pentax K-30 & K-50 03-26-2019, 06:37 PM  
K-50 / K-500 Aperture Solenoid fix (DIY with pics)
Posted By keos
Replies: 327
Views: 49,558
yes, it was tongue in cheek. not that funny I guess.:confused:
Forum: Digital Processing, Software, and Printing 03-25-2019, 09:09 PM  
DCU5 in Linux
Posted By keos
Replies: 13
Views: 705
it didn't like the cat command I was using to show the redhat-release file. I don't know why


full details (I use playonlinux here to keep it within a gui, the command instructions is what K1N8 says, to use the WINEPREFIX env):





Code:

uname -a








QuoteQuote:






Code:

Linux 1701d 5.0.3-200.fc29.x86_64 #1 SMP Tue Mar 19 15:07:58 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux






install wine






Code:

sudo dnf install wine.i686 wine.x86_64 winetricks playonlinux



this is the version installed






Code:

wine --version








QuoteQuote:






Code:

wine-4.4 (Staging)






run winetricks once so it sets up the winetricks directory structure in your home directory
in a terminal type





Code:

winetricks



and then close the window once it pops up.

in playonlinux create a new 32-bit installation directory, I call it DCU but call it whatever you want.

in a terminal, we want to create a softlink between the playonlinux wineprefix and winetricks






Code:

ln -s ~/PlayOnLinux\'s\ virtual\ drives/DCU ~/.local/share/wineprefixes/DCU



now run winetricks again, so in a terminal type





Code:

winetricks



when the window pops up, select DCU, then select windows components, and install DotNET 4.72 and wmp10
it will take a while and have a few prompts.

now download DCU5 from Pentax website, and unzip to a folder; I used ~/Downloads/DCU5

once that is done, go back to playonlinux and click configure for your DCU install prefix, and go to the wine tab and choose winecfg

in winecfg, go to the Drives tab and add a new drive, like E: and in path put in where you extracted the install files for DCU5; click show advanced and under Label put in the label that makes the installer think you have the original CD (mods please edit to add in label if ok to provide)
change the Type to Local hard disk and click OK

Back in playonlinux, go back to the configure window (it should still be open so look for the window in your task list, or reopen by clicking configure) and go to the Miscellaneous tab and choose "Run a .exe file in this virtual drive" and select updater32.exe from your extracted DCU folder. It should install without a hitch.

Go back to playonlinux and in the configure window for DCU in the general tab (first tab) click on "Make a New Shortcut from this virtual drive" and it will search and find Digital Camera Utility. Click on it and click ok, then cancel when it prompts you again. Now it should show up in playonlinux. Simply click run and you should be up and running.

edit: it works with 500 K1 PEFs in a single folder. I haven't tried more, but probably would be smart to keep it under 1000. See screenshots, made some adjustments, everything was working fine, if a bit slower.
Forum: Digital Processing, Software, and Printing 03-25-2019, 05:37 PM  
DCU5 in Linux
Posted By keos
Replies: 13
Views: 705
the label is to trick the installer into thinking you have the CD, because WINE does not read the CD Label properly apparently.

I tried to post the instructions, but the forum software keeps bugging out on me, probably because it's picking up linux commands and thinking I'm doing something bad. or something. I don't know, the firewall locked me about a few times. I guess the forum doesn't want me to share. Oh well.:hmm:
Forum: Pentax K-30 & K-50 03-25-2019, 05:29 PM  
K-50 / K-500 Aperture Solenoid fix (DIY with pics)
Posted By keos
Replies: 327
Views: 49,558
it seems to hold for now, I took several shots. I'm more worried about cold solder joints since I didn't use any flux at all. not sure if I've ruined the low temperature operations, not that I can test easily as it's warming up now.
Forum: Digital Processing, Software, and Printing 03-24-2019, 10:25 PM  
DCU5 in Linux
Posted By keos
Replies: 13
Views: 705
it works! takes a bit of a kludge though. At least in Fedora 29.
Have to use winetricks to install .NET 472 and WMP10, mount the install folder in winecfg and label it with the correct label (am I allowed to say what it is? google it if not), and then install the 32bit version and everything works. Just slow, but it's slow under Windows, so I guess no big difference.
Forum: Pentax K-30 & K-50 03-24-2019, 10:01 PM  
K-50 / K-500 Aperture Solenoid fix (DIY with pics)
Posted By keos
Replies: 327
Views: 49,558
followed the directions in the OP (also watched a few YouTube Videos). Had this happen to my K-50 and I left it alone for a few weeks. Finally gave in and bought the white solenoid on ebay for 35 bucks. Worked like a charm. I kind of half assed the solder of the wires to the new solenoid, but it seems to work, so let's see how long it holds. I mean I just applied some solder to the prong on the solenoid, then held the exposed wire up to the newly applied solder and melted them a little to attach the wire. Not exactly an A effort, but seems to be good enough.
Forum: Pentax SLR Lens Discussion 03-20-2019, 06:40 PM  
Am I wrong to hate the DA* 16-50mm?
Posted By keos
Replies: 19
Views: 979
I've used the Canon 17-55mm and 17-40mm L, the Sigma 17-50mm on 3 systems, and the Tamron 17-50mm on 2 systems, and I had 3 16-50mm SDM lenses, and I am very disappointed with the lens. It is not very sharp wide open and has problems with high contrast edges that doesn't go away until F5.6; even using flash indoors is a large chore, I have to bounce off the opposite wall to get the soft light otherwise it flares/ghosts (or whatever it's called when high contrast edges are fuzzy), which makes it hard to determine AFMA because it's hard to tell what is soft and what is out of focus. I think my favorite of the bunch is the Canon 17-55mm, followed by the Sigma. The Tamron has a loud focus motor but is pretty good otherwise. the 17-40mm is fine but not a great range of zoom on an APS-C sized sensor. It's the only weather resistant lens of that bunch. Which brings me back to the 16-50mm's performance, or lack thereof.


It's provides a great general purpose range of AoV, but it's not a 2.8 zoom lens. It performs like a f4 lens that got overextended into a f2.8 optical system, and I wish there was another weather resistant choice at f2.8 for the APS-C Pentax systems. Oh, and don't get me started on the SDM focus system....
If there was ever a lens that I felt undeserving of the * designation, this would be at top of the list.
Forum: Repairs and Warranty Service 03-05-2019, 12:02 PM  
Repairs are slow
Posted By keos
Replies: 5
Views: 650
yeah I called them, they are waiting for parts, will get me an ETA once they have one.

I think Sony's and NIkon's professional services are similar in nature. Not that it impacted by purchase decisions, but Canon's is much simpler; as long as you own enough Canon gear you will qualify 99.9% of the time, which I'm not sure how many amateurs take advantage of, but based on my conversation with the CPS rep it's not an insubstantial amount who do (even at the pricier gold and platinum levels).
Forum: Repairs and Warranty Service 03-05-2019, 10:09 AM  
Repairs are slow
Posted By keos
Replies: 5
Views: 650
I know the expectation given is something like 15-21 business days. Which I can understand given the size of the user base here in the US and the complexity of most repairs. But it's now been 5 weeks and I'm still waiting for the repair to even start.


Backstory: I originally used my glass at high f numbers with my K1-II to capture large DoF, and would use the center point to MFA new lenses. I used it for the first time for a portrait shoot where I shot at larger aperture (1.4-2.8) using more of the focus points available to me. Some of my images were really out of focus, and after some testing for focus accuracy at other focus points, I realized some of them in the same area were misaligned with the rest, and sent in the camera for warranty repair. I had the same problem with my Canon 7D2 earlier, and as a CPS member it was done in a few days. I had to do it a couple of times because they missed some adjustments the first time around, but the repair times + shipment times for that repair is less than half the time I've waited for the K1-II repair.

One thing that gets lost in all the technical specs is the after sales support. If Pentax had a program similar to CPS from Canon, I'd pony up to join it just for the turnaround time on repairs. I have enough cameras to use so it doesn't impact me, but wouldn't surprise me if it's one of the bigger reasons more pros don't use Pentax.
Forum: Pentax SLR Lens Discussion 01-21-2019, 04:02 PM  
APSC Portrait Lens info
Posted By keos
Replies: 34
Views: 1,790
I just finished a shoot using the 55mm 1.4 SDM; at f4-f5.6 it was sharp enough indoors with a flash that I should see the whiskers of a mustache and the hair follicles of a beard on my model's face. She was having a bad day I guess. I also used the 77mm limited and a 30mm art. At f4 - f5.6 they were also very sharp.

For APS-C cameras, indoors I think a 30mm and a 50-55mm would be great; outdoors I would use a 55mm or 70-77mm on that format. on FF I mainly use 50mm and 85mm indoors and 70-200mm outdoors.
Forum: Pentax SLR Lens Discussion 01-19-2019, 12:14 PM  
Sigma 30mm 1.4 Art focus
Posted By keos
Replies: 7
Views: 602
Just got the lens and haven't "docked" it yet, but my god the focus consistency is horrible. Tripod, against a wall with some vertical and horizontal lines. needed -1 MFA, which isn't so bad. 5 pictures in focus, 3 pictures slightly out of focus, 2 pictures so out of focus you'd think the damn AF mechanism was broken. at least it works relatively well in live view. tested on K3 II.
Forum: Pentax SLR Lens Discussion 01-06-2019, 01:30 AM  
Non-IF WR lenses
Posted By keos
Replies: 2
Views: 395
How weather & dust resistant are the WR lenses that are not internal focus? I would think the zoom action would be pulling in a lot of air one way or another. Going on a trip where air quality may get a little dusty.
Forum: Pentax SLR Lens Discussion 12-29-2018, 12:08 PM  
HD D FA* 50mm 1.4 AW
Posted By keos
Replies: 12
Views: 758
thanks, based on this it sounds like my copy of the lens as some bad gears or something. will go and get a replacement.
Forum: Pentax SLR Lens Discussion 12-29-2018, 01:26 AM  
HD D FA* 50mm 1.4 AW
Posted By keos
Replies: 12
Views: 758
sorry for the background noise and video qualithy, but it's something like this
Forum: Pentax SLR Lens Discussion 12-28-2018, 09:46 PM  
HD D FA* 50mm 1.4 AW
Posted By keos
Replies: 12
Views: 758
when focusing, rattles only when AF is activated and it's moving to the right focal plane or hunting in low light since I'm in a dimly lit section of the room.
Forum: Pentax SLR Lens Discussion 12-28-2018, 08:36 PM  
HD D FA* 50mm 1.4 AW
Posted By keos
Replies: 12
Views: 758
Just got this lens and it is amazing, if only just slight better than the DA* 55mm in my limited testing, but I only just unboxed it. However, I found the AF to make a slight rattling noise. Not sure if this is normal or if I need to get it replaced. Does anyone else who has this lens knows if it's supposed to be completely silent or is the slight rattling normal?

Thanks!
Search took 0.01 seconds | Showing results 1 to 25 of 63

 
Forum Jump


All times are GMT -7. The time now is 06:28 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top