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Forum: Welcomes and Introductions 09-23-2016, 10:10 AM  
Goodbye to all our friends here
Posted By David&karen
Replies: 12
Views: 687
We just did not want to disappear into the black hole of Nikon land and not say goodbye. A good suggestion to post here also.
Forum: Welcomes and Introductions 09-23-2016, 09:37 AM  
Goodbye to all our friends here
Posted By David&karen
Replies: 12
Views: 687
Hi everyone. We wanted to say goodbye and a big thank you to everyone at Pentax Forums. From funny squirrels to huge help with technical issues, it's been a great few years here. Our needs changed, otherwise we would of stayed with with Pentax, and we will miss everyone here. Thank you all!

David & Karen
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 08-09-2016, 05:18 PM  
Here's one problem that Nikon has that Pentax does not...
Posted By David&karen
Replies: 2
Views: 653
Hi all. I noticed this with a recent rental camera: The D750 Nikon when used with the 24-70VC Tamron and the 70-200VC Tamron will not allow both lenses to have a different AF micro adjustment setting. It appears that the two lenses share the same digital ID number that the camera detects. And from what I have read on the Nikon forums the 15-30 and the new 35-45-85-and latest model 90 macro VC models share that also(did not rent the 35-45-85- and 90 macro so I did not personally see that). So if you want many of the latest model Tamron lenses on your Nikon, you have to settle for no or only one AF micro adjustment. Makes it real fun as the rental 24-70 needed -4, and the 70-200 +5 to be spot on. Or you can have only one of the Tamron lenses. I emailed Tamron as this has been an issue since May 2013, and they are blaming Nikon! After 3 years that seems lame. I first saw a report on this from a D800 user in 2013. Just so we know that the other side does have some fun...

David
Forum: Pentax SLR Lens Discussion 07-14-2016, 09:37 AM  
FIVE new lenses to be announced by Samyang.
Posted By David&karen
Replies: 30
Views: 2,714
It would be nice if they coughed up a 21mm full frame prime in pentax mount, even f2.8 would be good for me!



David
Forum: Pentax K-1 07-13-2016, 04:50 PM  
Is the lens used in DPR K1 review for the low light test a Sigma A35mm f1.4?
Posted By David&karen
Replies: 4
Views: 931
That is what concerns me about that portion of the DPR review. If it is that lens on the K1 that is the issue, and that is a third party lens, it invalidates the review. As a scientist myself that is just improper procedure. They should of tried a Pentax lens to see if the issue was still there.

David
Forum: Pentax K-1 07-13-2016, 03:26 AM  
Is the lens used in DPR K1 review for the low light test a Sigma A35mm f1.4?
Posted By David&karen
Replies: 4
Views: 931
That could easily explain DPR's low light findings in their review, a simple error in the hardware.

David
Forum: Pentax K-1 07-12-2016, 04:31 PM  
Is the lens used in DPR K1 review for the low light test a Sigma A35mm f1.4?
Posted By David&karen
Replies: 4
Views: 931
Hi all. Please correct me if I am incorrect, but I thought I saw that DPR used a Sigma Art 35mm f1.4 lens for the low light AF test of the K1 and they said that the camera was hesitant to make a lock on the subject(a band scene that was dimly lit). I have read sporatic reports of that lens sometimes doing just that from other users, Pentax as well as Nikon and Canon. Do you think that may of been the issue here? It certainly is not a problem with all the lenses, but what if that happened here, esp. as many have pointed out that the K1 has a swift sure low light AF lock with other lenses. What do you all think?

David
Forum: Pentax K-1 07-10-2016, 01:17 PM  
Pentax K-1 Continuous AutoFocus Performance
Posted By David&karen
Replies: 135
Views: 14,194
I think I have read as much as I could find about this subject over the last 3 days that my eyeballs are bleeding! I don't think Dr. Sanyal did anything nefarious in the test/editing of the K1. I am a technical professional with a graduate degree in Radiography/Radiation Physics(NOT a PHD) so I can understand his point of view and the scientific method. I think being consistent in DPR's testing with out snarky quips and with a bit more disclosure of lenses used/methodology would go a long way for many of us and help us to understand what was happening. I used a Nikon D3X for three years which had Nikon's 1st generation of the 51 point AF system that many are referring to here in the Nikon D750. I just went into about 5000 images exif files to see what it was doing with tracking, especially with moving people both fast and slow. Even with the old 51 point AF it's hit rate was/is remarkable without much intervention from me. The K1 will track, but I have to keep the AF point on the target( I rented the thing with the 24-70 lens; we own the K3 and K3II), where the D3X did most of that itself. It appears that the K3, K3II, K1 do not have much of an ability to lock on and track BY ITSELF, but it works much better if you track and keep the AF point where you want it to focus. One thing that the Nikon 51 point system is superb at is locking onto a face and tracking that face with the optical view finder, and for weddings this can really lessen the workload on the photographer. Yes the most modern Pentaxes do wedding shoots very well, but it will take more effort. The Pentax AF may simply need a more powerful processor, or even two processors to really excel, but I don't know that for sure. I switched because my wife has small hands and needed a rugged weather resistant camera that did not weigh a ton for the lenses. I MAY need to switch back to the Nikon(D750) as my need for a faster AF with facial recognition is starting to outweigh my need for more MP(24 vs 36) and the other goodies that the K1 offers. Karen will stay with APSc Pentax and will probably never switch. Ymmv but this is how I see this now, and time to move on.

David
Forum: Pentax K-1 07-10-2016, 11:29 AM  
Cannot Achieve Infinity Focus with Rokinon 14 on K1 Body.
Posted By David&karen
Replies: 8
Views: 897
Welcome.

David
Forum: Pentax K-1 07-10-2016, 11:00 AM  
Cannot Achieve Infinity Focus with Rokinon 14 on K1 Body.
Posted By David&karen
Replies: 8
Views: 897
Here is a link to a YouTube video (














You Tube



) fixing the infinity focus and the scale on this lens. I did it a few years ago and it works perfectly if you you are ok with doing this. It's in Spanish with subtitles. My copy is perfectly calibrated now.

David
Forum: Pentax K-1 07-09-2016, 01:49 PM  
Pentax K-1 Continuous AutoFocus Performance
Posted By David&karen
Replies: 135
Views: 14,194
Frankly, I don't understand it at all, that's why I asked; it probably will not help but??

David
Forum: Pentax K-1 07-09-2016, 01:41 PM  
Pentax K-1 Continuous AutoFocus Performance
Posted By David&karen
Replies: 135
Views: 14,194
Thank you all and esp. Quark for all the time and effort involved to do this testing, looking at picture data, and brain storming to figure this out. We had a thought, which we think will not help, but we saw somewhere that someone posted that they put the AFc mode into FPS priority instead of Focus priority and that increased the in focus hit rate buy like a factor of 2 or more. Personally it goes against logic that it would work, but has anyone here tried it?

David
Forum: Pentax K-1 07-04-2016, 11:50 AM  
Pentax D FA 24-70 vignetting?
Posted By David&karen
Replies: 10
Views: 1,118
This very typical for a 24-70 f2.8 lens. The Nikon and Canon 24-70's all do it and are only around a 1/4 stop better controlled in the vignetting aspect. It is the case of best obtainable result at a price and size/weight that is acceptable to people. We owned the Nikon 24-70 G and it was actually less sharp in the corners wide open than what we have seen from the Pentax/Tamron 24-70. Ymmv, but there it is.

David
Forum: Pentax DSLR Discussion 06-09-2016, 05:36 PM  
Petition - Please allow KAF4 firmware for the K3, K5 series, and K50
Posted By David&karen
Replies: 227
Views: 20,178
Count us in. We have one K3II but two K3's, and It probably will not happen but it would be nice to see the firmware update for our K5IIs! BTW, when Nikon introduced their electronic aperture control last year all but two camera bodies going all the way back to the D3 series of August 2007 could use them. So why should it be hard for Pentax to go back a few more models?
Forum: Pentax SLR Lens Discussion 06-07-2016, 03:05 PM  
DFA 100 Macro has a sticky aperture lever, who to send it too?
Posted By David&karen
Replies: 12
Views: 943
You know I have the right size screwdrivers, and they are the JIS kind that almost never slip unlike regular Phillips ones do. I'll try it this weekend, makes a good project!

David
Forum: Pentax SLR Lens Discussion 06-05-2016, 04:05 PM  
DFA 100 Macro has a sticky aperture lever, who to send it too?
Posted By David&karen
Replies: 12
Views: 943
Thanks all! I took Adam's suggestion and emailed Eric and if he can do it I would really rather support the folks here. If he cannot I'll try Keh. Thanks again!

David
Forum: Pentax SLR Lens Discussion 06-05-2016, 02:58 PM  
DFA 100 Macro has a sticky aperture lever, who to send it too?
Posted By David&karen
Replies: 12
Views: 943
Our DFA 100 Macro has started having a very slow acting aperture stop down lever, so now the exposures are off. It is a few years out of warranty so who is the best place to send it to to fix this as we have to pay for the service? We live in Virginia USA. Thanks for all replies!

David
Forum: Digital Processing, Software, and Printing 05-15-2016, 03:37 PM  
Pentax Digital Camera Utility 5.5.1 and Pixel Shift on K3II
Posted By David&karen
Replies: 8
Views: 1,045
Pf must automatically put a link in,we certainly did not. As I(David) have the flu I figured people can look it up if they wish, or ignore if they are not interested.
Forum: Digital Processing, Software, and Printing 05-15-2016, 01:57 PM  
Pentax Digital Camera Utility 5.5.1 and Pixel Shift on K3II
Posted By David&karen
Replies: 8
Views: 1,045
That is because there is no link in our post, just info. Ymmv.
Forum: Digital Processing, Software, and Printing 05-15-2016, 01:18 PM  
Pentax Digital Camera Utility 5.5.1 and Pixel Shift on K3II
Posted By David&karen
Replies: 8
Views: 1,045
Hi everyone. We found a blurb on Pentax Rumors that DCU had version 5.5.1 for download, and that it allowed toggling of motion correction on/off for the RAW file of Pixel shift from the K3II camera. I know you can select that mode as I just did it and exported the JPG from it and looked at it in LR 6. I'm home with the flu so I cannot shoot a pic with actual motion in it to see if it works(maybe next week), but I thought you all should know about this and hopefully someone will confirm or not this is working. If it does work it should bring the same benefit as the K1 has just without being able to do it in camera. That is all...

David & Karen
Forum: Pentax K-1 03-20-2016, 11:39 AM  
Computer specs for K-1 Post Processing
Posted By David&karen
Replies: 14
Views: 1,752
I think that too just offering alternatives. We use a raid 5 for the picture storage, 16 tb in volumes so TB works well for us. The mini has been raid0 for 5 years so it works just fine.
Forum: Pentax K-1 03-20-2016, 10:13 AM  
Computer specs for K-1 Post Processing
Posted By David&karen
Replies: 14
Views: 1,752
The 2012 mini quad core is only faster by 15% in ghz processor speed and 1333 vs 1600 in the memory bus, the harddrive or ssd bus is the same, not a lot of difference imo. The big difference is the usb 3 ports on the 2012, but we used thunderbolt for the external drive. With lightroom 6 having no graphics hardware acceleration in the develope module was the real issue. And the 2012 mac will not allow that acceleration either. And our mini with raided ssd's is twice as fast as a single ssd in a mini. That you do notice and can easily be added to your 2012, ifixit rocks for that.
Forum: Pentax K-1 03-20-2016, 07:37 AM  
Computer specs for K-1 Post Processing
Posted By David&karen
Replies: 14
Views: 1,752
We had the 2011 mac mini server with a quad core 2.0ghz processor, 16 gb ram, and a pair of 240gb ssd's in raid 0 to both double their speed and storage. We used external drives for both file storage and time machine backups. That being said it got way too slow for us even using 24mp files. We put the ssd's in ourselves. IF you can afford it get a mid level imac 27" 5k with a 2tb fusion drive or larger fusion drive. We sprung for the most blown out one and it is night and day faster over the mini using lr6 or aperture. The mid level imac would give over 85% of what our system does at around half the price. But you can do the drive swap yourself on the mini if you go that route. Pm us if you want more info.
Forum: Digital Processing, Software, and Printing 03-13-2016, 11:00 PM  
Computer crashing while using Lightroom
Posted By David&karen
Replies: 18
Views: 1,345
Hi. We had the crashing Lightroom 6 issje also, and it was due to using the graphics card for acceleration in Lightroom. Try going to prefrences and see if the checkmark for graphocs acceleration is checked or not, and if it is uncheck it. And how much ram do yoj have?

David
Forum: Pentax Price Watch 03-13-2016, 12:26 PM  
Sigma 85mm F1.4 on sale.
Posted By David&karen
Replies: 2
Views: 1,197
Hi all. The Sigma 85mm F1.4 is on sale in Pentax mount for $869 at their website and most of the usual sources in the USA. That is all...

David

Sigma 85mm f/1.4 EX DG HSM Lens For Pentax Digital SLR 320109
http://www.adorama.com/sg8514pxaf.html
85mm F1.4 EX DG HSM | Sigma Corporation of America
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