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Forum: Pentax K-3 10-05-2019, 02:54 AM  
Possible focusing issues with k-3?
Posted By JohnX
Replies: 10
Views: 422
Sensor = af sensor, not the image sensor.
Forum: Pentax SLR Lens Discussion 09-24-2019, 12:13 AM  
SMC Pentax 500mm F4.5
Posted By JohnX
Replies: 8
Views: 558
Isn't the most important issue ensuring the lens/body are positioned so that the centre of gravity is directly over the centre of the main axis of the head?
Forum: Troubleshooting and Beginner Help 09-15-2019, 12:59 AM  
Is this sharp? - Pentax DA 55-300mm f/4-5.8 ED WR
Posted By JohnX
Replies: 31
Views: 1,577
None of them are sharp. Have you set the lens up using AF Adjust?

In any event, even using AF Adjust the critical focus point may/will vary depending on the fl youve zoomed to.

Search for advice on using AF Adjust.
Forum: Pentax DSLR Discussion 09-13-2019, 07:47 AM  
Used Equipment Adventure!
Posted By JohnX
Replies: 15
Views: 1,143
Buy a MUCH bigger case! :)
Forum: Troubleshooting and Beginner Help 09-01-2019, 05:26 AM  
Can a faulty battery cause a DSLR to behave erratically?
Posted By JohnX
Replies: 45
Views: 1,666
Surely it would make more sense to just dispose of it? No point in keeping on using something you can't trust.
Forum: Troubleshooting and Beginner Help 08-19-2019, 09:56 AM  
Should I sell sigma 30mm f1.4 or K50?
Posted By JohnX
Replies: 19
Views: 892
The questions I raised are to help eliminate the various factors that might be causing the problem.You need to work through all the possibilities, then whatever is left is the answer!
Forum: Troubleshooting and Beginner Help 08-19-2019, 05:34 AM  
Should I sell sigma 30mm f1.4 or K50?
Posted By JohnX
Replies: 19
Views: 892
Have you calibrated the lens using the AF Fine Adjustment?

Have you tried shooting the same scenes using Live View?

Have you tried the same scenes with the camera on a tripod? (You say you don't want to discuss tripods, but are any shots better with a tripod? Please post them here)

Have you tried the same scenes doing any of the above with lower ISO?

You need to ensure you eliminate possible bad technique, non-optimum settings, etc. especially if shooting hand-held.
Forum: General Photography 08-19-2019, 04:06 AM  
It is Deja vu all over again. :(
Posted By JohnX
Replies: 6
Views: 760
You could, of course, provide a link to a camera shop web-site.
Forum: Troubleshooting and Beginner Help 08-18-2019, 05:10 AM  
Lens hood size for Pentax X-5?
Posted By JohnX
Replies: 6
Views: 285
Won't work I'm afraid.

The end of the lens itself has no provision for a hood to be attached, even a clip-on.

If the hood could attach to the body, and again, there's no provision for it, the hood would quickly be ineffective, as the lens moves outward about 1.5" when zoomed, i.e. the front element would be beyond the end of a hood.

I've found, when caught without a hood for some reason, a judiciously positioned hand, newspaper, etc, (outside the framed shot of course), can help prevent flare.
Forum: Pentax DSLR Discussion 08-14-2019, 08:59 AM  
DA 50-135 and autofocus
Posted By JohnX
Replies: 13
Views: 992
The 50-135 is a great lens, but is slow to focus.

What were the models doing when you shot? You said 'The models were to quick' which suggests possibly fast movement?
Forum: Troubleshooting and Beginner Help 08-13-2019, 03:23 AM  
K50 Under Exposure in View Finder Mode
Posted By JohnX
Replies: 20
Views: 855
Which 55-300?
Forum: Pentax SLR Lens Discussion 08-10-2019, 12:07 AM  
Lenses for London
Posted By JohnX
Replies: 12
Views: 713
What's your list of places to visit/subjects to shoot? London's hugely diverse photographically, as is Paris.
Forum: Pentax SLR Lens Discussion 08-07-2019, 05:41 AM  
How would you price these?
Posted By JohnX
Replies: 14
Views: 697
Although there are UK members on this site, are you aware there is a UK Pentax enthusiasts site? You'll probably get good if not better suggestions on UK prices there.
Forum: Pentax DSLR Discussion 07-24-2019, 09:04 AM  
Upgrading my K-5 [K-3ii or KP]?
Posted By JohnX
Replies: 18
Views: 1,467
Not saying the KP isn't good; just not Pentax's top APS-C model. The ergonomics of the top models are, in my view, superior.

As to pixel shift not being in the K3II, mine definitely has it.
Forum: Pentax DSLR Discussion 07-24-2019, 01:40 AM  
Upgrading my K-5 [K-3ii or KP]?
Posted By JohnX
Replies: 18
Views: 1,467
The K3II is in the same customer segment as your K5, i.e. top APS-C. The KP isn't.
Forum: Repairs and Warranty Service 07-15-2019, 08:11 AM  
Da* 50-135 repair
Posted By JohnX
Replies: 6
Views: 578
She might not realise that this lens zooms and focuses internally. It needs to be mounted on a body to determine if there really is a problem.
Forum: Pentax SLR Lens Discussion 06-15-2019, 03:56 AM  
pentax Kp with HD 16-85mm lens
Posted By JohnX
Replies: 10
Views: 915
Sorry. You can't extrapolate a single bad experience into a 'therefore it's all bad' statement.

Stuff happens. No matter how well made or expensive something is, someone will always find something that isn't quite right.

The lens you refer to is consumer grade, i.e. built to a price. You get what you pay for.

Copy what you wrote on DPR here so we can understand more.

Try a DA* or Limited lens, then come back and tell us if Pentax is still rubbish.
Forum: General Photography 06-11-2019, 04:02 AM  
Hotshoe mounted viewfinder for fast moving birds?
Posted By JohnX
Replies: 11
Views: 847
Take a look at red dot sights.
Forum: Repairs and Warranty Service 05-20-2019, 07:11 AM  
Odd repair on my DFA 24-70mm
Posted By JohnX
Replies: 11
Views: 861
Me too. I understand the adjuster is under the bottom plate.
Forum: Troubleshooting and Beginner Help 05-16-2019, 12:04 AM  
Flu card problem
Posted By JohnX
Replies: 10
Views: 581
It only works with certain browsers. What are you using?
Forum: Pentax DSLR Discussion 04-05-2019, 12:50 PM  
K10D and the new HD Pentax-FA 35mm f/2
Posted By JohnX
Replies: 23
Views: 1,723
Back or front focus is the result of combining the tolerances in a camera body and a lens, which is why it changes depending on the body/lens combo. The K10D is not the culprit on its own.
Forum: Pentax News and Rumors 03-29-2019, 09:17 AM  
Limited Lens special site
Posted By JohnX
Replies: 127
Views: 12,385
Maybe it's me, but do they suggest that soft IQ wide open is a 'feature'?
Forum: Pentax SLR Lens Discussion 03-15-2019, 07:33 AM  
77m Filters, they ok?
Posted By JohnX
Replies: 22
Views: 970
Lens caps and hoods.

You'll need to buy 77mm caps, and, if you use a lens hood you'll find that because of its much larger size a 77mm hood won't be very effective, if at all, on, say, a 49mm lens.
Forum: Pentax SLR Lens Discussion 03-08-2019, 05:28 AM  
Storing Lenses in Original Packaging
Posted By JohnX
Replies: 7
Views: 816
The small desiccant packs have a very short working life, insofar as you need to remove the moisture from them once they are 'full', so if you're not doing that on a regular basis they're next to useless. You need to know the dry weight, and then dry them out once they've increased weight by around 40%.
Forum: Pentax Camera and Field Accessories 02-11-2019, 10:56 AM  
Binoculars as part of wildlife photography kit
Posted By JohnX
Replies: 30
Views: 2,284
I too have these. Great for the price.
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