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Forum: Pentax DSLR Discussion 07-19-2010, 03:45 PM  
Dust on K20D sensor
Posted By Oggy
Replies: 12
Views: 5,043
Looking at your pictures I agree you have dust on your sensor (or rather the filter in front of it) but I wouls not recommend a blower. These simply shift the dust and launch it only for it to land elsewhere.

Try an Arctic Butterfly. This is a brush which spins to generate a static charge. This will attract the dust from the filter. It can then be discharged into the air well outside the camera body.
Forum: Pentax SLR Lens Discussion 04-21-2010, 02:25 PM  
Newly acquired DA 21 mm LTD : obligatory first shot!
Posted By Oggy
Replies: 18
Views: 3,854
I'd be interested to see how it copes with architecture type shots.

I had only recently found out that the DA* 16-50 ain't so clever for this type of picture at 16mm due to the pincushion distortion, so now I'm looking for a wide prime.
Forum: Troubleshooting and Beginner Help 04-21-2010, 01:59 PM  
Auto focus grind
Posted By Oggy
Replies: 12
Views: 1,841
Seconded.

It sounded as if the "screw drive" had not engaged properly.

Inspect it for dammage and debris.
Forum: Troubleshooting and Beginner Help 04-21-2010, 01:42 PM  
Firmware updates
Posted By Oggy
Replies: 6
Views: 1,911
I think you are at the dividing line between SD and SDHC. If your camera was not designed for SDHC, no firmware update will help as it is a hardware difference.
Forum: Pentax DSLR Discussion 04-21-2010, 01:38 PM  
Broken screen on K020
Posted By Oggy
Replies: 5
Views: 1,710
Bad luck mate. :(

It's got to be worth getting an estimate on getting it repaired - it may just be a wire off. Personally i'd turn it off and take the battery out to stop the problem getting worse.
Forum: Pentax DSLR Discussion 04-21-2010, 01:32 PM  
Cleaning the Sensor on K100D
Posted By Oggy
Replies: 11
Views: 4,969
I use an Arctic Butterfly as well. Absolutely spot on

er

off :D
Forum: Pentax DSLR Discussion 04-12-2010, 01:51 PM  
K20D memory card problem
Posted By Oggy
Replies: 14
Views: 2,734
Well - I've asked elsewhere and I've heard some real bull's wool but no-one really seems to know. I have not had a full card shoot since tha last airshow I went to last year, but I did some experiments copying files back onto the card and the fuller it gets, the more reasonable the number left gets.

Ho hum.
Forum: Pentax SLR Lens Discussion 04-10-2010, 03:08 PM  
Hitlers SDM Fails
Posted By Oggy
Replies: 25
Views: 3,357
I have to say that despite Robin's appropriate comments, I was i bits when I first saw this.

If "my 50-135 was up the fritz" I would probably lose it big time too. ;)
Forum: Pentax DSLR Discussion 04-10-2010, 02:14 PM  
K20D memory card problem
Posted By Oggy
Replies: 14
Views: 2,734
It gets odder. I have to say I do not use .DNG so I do not know a lot about them, but I have just tried a few experiments. All done with a 4Gb card -

If I select DNG, I get a file size of about 23Mb and 166 pictures available, total about 4Gb.

If I select PEF, I get a file size of 13Mb, but still 166 pictutes, just over 2Gb.

If I select RAW+ and the highest quality Jpeg, for each picture I get two files total 23Mb and 104 pictures available, about 2.5Gb.

Now I am confused. Either file sizes are being reported wrong or one file(Jpeg) can form part of another.
Forum: Troubleshooting and Beginner Help 04-09-2010, 04:40 PM  
Renting DA* 16-50mm
Posted By Oggy
Replies: 27
Views: 3,638
The 16-50 is a mixed bag. It is capable of remarkable resolution, contrast and colour in the right situation, but it's linearity at 16mm wide open can go horribly wrong.



On the other hand, if you are looking at something other than architecture at 16mm, it's great.

Forum: Pentax DSLR Discussion 04-09-2010, 04:15 PM  
K20D memory card problem
Posted By Oggy
Replies: 14
Views: 2,734
Hi Bodhi08.

If I set my K20 with a 4Gb card up as you mention I get 166 pictures available, but if I take a picture it comes out as 23Mb rather than 10. This adds up about right.
Forum: General Talk 04-09-2010, 04:00 PM  
Announcing the PentaxForums Million-Post Giveaway
Posted By Oggy
Replies: 1,243
Views: 187,630
Count me it too please.:D
Forum: Troubleshooting and Beginner Help 04-01-2010, 03:06 PM  
Sensor dust
Posted By Oggy
Replies: 24
Views: 5,286
Try an Arctic Butterfly. Well worth the money.
Forum: Troubleshooting and Beginner Help 02-24-2010, 03:23 PM  
400,500mm ???
Posted By Oggy
Replies: 20
Views: 3,761
Only wide open. (150-500). Two stops down and they are sharpe. I believe the Bigma is even better.



I use mine hand held most of the time for aircraft and birds.
Forum: Pentax SLR Lens Discussion 02-24-2010, 02:47 PM  
:( DA*
Posted By Oggy
Replies: 76
Views: 13,082
More to do with one idiot to many. There is no excuse for the behaviour of some people around here. Disagree by all means, but keep it civil.


I am an engineer and as such deal with facts such as force = mass x acceleration. In the absence of facts I resort to well proven theories such as Pythagoras’s theorem (cannot be proved, but has not been wrong yet).

The whole SDM thing has got blown out of all proportion. No doubt some of these lenses have failed and those who own them feel aggrieved and need to publish about it.

On the other hand, people who have had nothing but excellent results from them, myself included. Very few of these people are going to post to say theirs haven't broken. They tend not to bother replying to polls which cannot be representative anyway.

In this way, the appearance is generated that there is a high failure rate, and it quickly degenerates into frenzy.

I am a member of 3 Pentax fora, and of the other two, one has two or three mentions of this in the eighteen months I have been there, and the other has zero.

This leaves me curious. Why are so many allegedly breaking on this forum and virtually none on others? Geographical or climatic considerations? Mis-handling by some importers? Slewed perception? Abuse of the lenses?

I have noticed sometimes logic escapes this forum - for example when someone asks is a lens any good and others say that it isn't sharp even though they have never tried them, then someone else posts sharp pictures taken with the lens but the OP decides that he has heard that it isn't sharp so he's not going to have it. Furthermore, without intending to offend, some of the "science" talked around here has me rolling on the floor - I would have known better when I was 12 years old.

Now - back to the frenzy---
Forum: Pentax DSLR Discussion 02-23-2010, 03:59 PM  
I'm still concerned with the dust
Posted By Oggy
Replies: 26
Views: 4,553
I do not have to rely on reviews.;)
Forum: Pentax DSLR Discussion 02-23-2010, 03:38 PM  
K20D Firmware Ver - Pentax Web Site Ver?
Posted By Oggy
Replies: 2
Views: 3,385
I don't know if it helps but I have the latest version of the firmware in mine and I am showing the same as yours.

I do not know what the updates were, but I think mine focuses faster with screwdrive lenses since the update.
Forum: Pentax SLR Lens Discussion 02-21-2010, 04:05 PM  
No more Bigma????
Posted By Oggy
Replies: 24
Views: 3,911
I was going too say that but you got there first.

Curiously the new Bigma is not an EX (Sigma's better IQ optics) and I believe the old one was.
Forum: Pentax SLR Lens Discussion 02-21-2010, 03:57 PM  
:( DA*
Posted By Oggy
Replies: 76
Views: 13,082
Sorry poke, but I do get a little bored with the sanctimonious "burn the witch" drivel which this forum descends into at the mere mention of SDM. Still it must be of some comfort to you to know that I must be dead because I have had four for a year and at least one of them must have killed me by now when it blew up.
Forum: Pentax DSLR Discussion 02-21-2010, 03:41 PM  
K-7 Firmware Update-Help
Posted By Oggy
Replies: 22
Views: 6,106
I seem to remember a quirk when I updated my K20.

IIRC, the flashing "updating" carried on but it came up complete as well. In the end I bit the bullet and turned the camera off and back on and all was well.
Forum: Pentax DSLR Discussion 02-21-2010, 03:30 PM  
I'm still concerned with the dust
Posted By Oggy
Replies: 26
Views: 4,553
Don't underestimate it Alpha.

I only got mine a few weeks ago and it removed all visible dust, including two specs and a small hair which have been on my sensor since last summer and have survived two wet cleans.
Forum: Pentax DSLR Discussion 02-20-2010, 04:56 PM  
Newbie with K-x and battery question
Posted By Oggy
Replies: 10
Views: 2,178
Sorry Patsy - should have said Welcome to the forum. :o
Forum: Pentax SLR Lens Discussion 02-20-2010, 04:48 PM  
No more Bigma????
Posted By Oggy
Replies: 24
Views: 3,911
If you are interested, some of mine with the 150-500 here and here.
Forum: Pentax SLR Lens Discussion 02-20-2010, 04:06 PM  
:( DA*
Posted By Oggy
Replies: 76
Views: 13,082
Still Drives Mine :D
Forum: Pentax SLR Lens Discussion 02-20-2010, 03:59 PM  
FA 50/1.4 Confusion - Question
Posted By Oggy
Replies: 6
Views: 1,604
The FA50 1.4 supply seems to be intermittent. I saw them advertised at my favourite dealer a couple of weeks ago so I bought one. Now they are now longer available.
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