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Forum: Pentax SLR Lens Discussion 07-13-2016, 02:13 AM  
Sigma says No
Posted By waddojohn
Replies: 25
Views: 3,065
Hi, I recently wanted to purchase one of two lenses. Sigma 150-600mm and/or 300-800mm. I wrote to the Sigma office in the UK, asked if there was any chance of the two lenses being made for the Pentax mount. The reply I received was one that left me amazed. Sigma Japan have no intention of making these two lenses for Pentax, because Pentax do not sell enough units to warrant the cost of producing them, They do not think that there is enough demand for their product to be purchased.
This has now left me with only one direction and that is to purchase another make of Camera. I have been a loyal Pentax owner user for over 45 years, with the FF almost available in the UK. I find myself wondering why I could buy a Nikon D720 and the 150-600mm contemporary lens for less than the cost of the New FF body, which I have been waiting what seems a lifetime only to find the Lens I would like to bolt on, is not available in Pentax. the Sport Lens would only just be a Little bit over if I went down that route.
Its a sad day when in my opinion the Best camera maker, is not supported by a major lens maker. I read in articles they are plenty of Pentax lenses available, maybe there is, I have great difficulty getting or finding them, I like nature and Military, so short lens are useless for my interests.
So my life long collection will have to take second place, I will not sell them.
I hope the New FF is a crowd puller and that Sigma changes its policy, sadly I will have moved on because I cannot wait any longer.

Regards

John
Forum: Pentax DSLR Discussion 02-12-2016, 03:43 PM  
Are we really THAT rare?
Posted By waddojohn
Replies: 6,327
Views: 825,210
Pentax is alive and well in the UK. Our trouble is getting long lenses. Check eBay & see how many are chasing kit. I have used Pentax for over 45 years. When asked Why Pentax, my answer is always the same, I don't do point & shoot. Very rarely do they say anything else.
Forum: Troubleshooting and Beginner Help 11-02-2012, 01:58 AM  
Sigma 50-500mm F/4.5-6.3 APO DG OS HSM
Posted By waddojohn
Replies: 7
Views: 4,375
I have a K10D,
Short answer is No it will NOT, :(

what you get is a flashing back screen, you cannot change any features or settings.
I have tried Sigma and Kenko (x1.5/x1.4/x2) converters, bought and sent back.
My Advice if you see a converter in a Shop, get them to check it on a Pentax body with the Bigma

I have written to Sigma, they say they have not considered to make a convertor that fits Pentax for this Lens
Kenko said same ( possibly waiting for someone to develop before bringing out a cheaper alternative)

Have Emailed Pentax to Beg them to make one, if they get a lot of enquires they may make it for us.

I am using a Panagor 2x convertor as it has no contacts to cause problems.

Regards

waddoJohn
Forum: Troubleshooting and Beginner Help 01-07-2011, 01:08 AM  
1st Problem ever on my K10D from new
Posted By waddojohn
Replies: 16
Views: 7,638
Hi
In answer to the questions, I have looked for a spring, To be honest even with the varifocal glasses that I wear, I cannot see the spring at the bottom, or if I could see it, where to attach it as I cant see that either.
I used a fine point needle, so I didnt do any damage.
I could do with having your eyes to find what I have been told to find, sadly your at the wrong end of the world for me to drop by.
As I said you all have been very helpful, and if I cant see it then returning quotes isnt helpful at all, its pretty clear its my eyesight thats stopping me fixing it, so my option is to take to someone who has the eyesight or equipment that can get the job done.
With the supplied advice they dont have to spend time looking for it. and I will return with the fix when its done.

Thanking you for your time

Best Regards
John
Forum: Troubleshooting and Beginner Help 01-06-2011, 12:27 PM  
1st Problem ever on my K10D from new
Posted By waddojohn
Replies: 16
Views: 7,638
Hi Guys,
I sent all the information given on here to Pentax support UK. this is what they said.

Sounds like an Aperture block problem. your iris blades are not being opened when you attach your lens giving you a dark picture through the view finder.

A lot wiser with all your Help,

Many Thanks

Regards

John
Forum: Troubleshooting and Beginner Help 01-06-2011, 06:02 AM  
1st Problem ever on my K10D from new
Posted By waddojohn
Replies: 16
Views: 7,638
I cannot see a clear view with a lens mounted through the viewfinder, could be that the aperture lever has a problem with the depth of field action. the lens blades are normaly at their widest when you put a lens on and you can preview by using the depth of field lever.
I cannot get the diaphram to move by using the DOF lever. In the picture that is supplied by Ash and SOldbear, it shows where the lever should be. mine is at the top and not as show in the picture.

It seems my only option is to take to a good repairshop, armed with the knowledge you kind people have given me.
Regards
John
Forum: Troubleshooting and Beginner Help 01-06-2011, 12:52 AM  
1st Problem ever on my K10D from new
Posted By waddojohn
Replies: 16
Views: 7,638
Hi Ash,

Yes it does springs back up when pushed down, physically manipulated. not by the DOF switch. (you can hear and see the cog action when the DOF switch is actioned)

Regards

John
Forum: Troubleshooting and Beginner Help 01-05-2011, 09:56 AM  
1st Problem ever on my K10D from new
Posted By waddojohn
Replies: 16
Views: 7,638
Hi SoldBear,

I can see what your pointing at, When I switch on and move the Depth of Field lever, can hear the noise and there is no movement in the slide, the black lever is at the top (black lever one at each end)., it will only move down. so the spring must still be attached at the bottom end.

Regards

John
Forum: Troubleshooting and Beginner Help 01-05-2011, 01:04 AM  
1st Problem ever on my K10D from new
Posted By waddojohn
Replies: 16
Views: 7,638
Hi Guys
Sorry about the too much info, "panic writting"
Thanks for the quick responce, The test was for me to eliminate the Sigma 50-500mm as I had it serviced before Christmas and it works fine on the istDS. never thought about the K10D being at fault at that time its been rock solid.
"Habit of cleaning contacts everytime I switch lens's."
Tried the putting a couple of lens on this morning before setting off to work.

aperture lock on, you get a reading F stop and speed, the blades are visible, using the pre aperture lever you can hear the mech working but No movement of the blades.
aperture lock off, Reading shows F--- and a speed, blades again visable and by turning the aperture ring the diaphragm opens and closes at each f-stop, again you hear the mech working but it doesnt open up the diaphragm to its widest opening on any of the f-stops.

Best Regards

John

(I'd noticed someting was wrong when I had tried to take a Bittern in flight that had appeared out of the reeds, all I got was a brown smudge, the previous shot was an amazing shot of a water rail, never seen one that close, possibly due to the lake being frozen at the time)
Forum: Troubleshooting and Beginner Help 01-04-2011, 05:18 PM  
1st Problem ever on my K10D from new
Posted By waddojohn
Replies: 16
Views: 7,638
Hi

Any answer to my problem.

I have a Pentax K10D that has developed a problem, when looking through the viewfinder with the lens on A-Lock the view is dark. I can change the Mode Dial to anything this does not change the view, or when I change the ISO to 1600, I cant get the speed above 1s
the view becomes bright when the A-lock is disengaged

I have tried the Sigma 50-500mm on another camera,
eg. AV f6.7 1/60 ISO 800 on the Pentax ist DS time 15:43
same settings on the K10D AV f13 1s ISO 800 time 1600

noticed the problem Jan03 2011

Thanking you for all your Help

Regards

John
Forum: Welcomes and Introductions 01-04-2011, 05:11 PM  
Hi from Wakefield, uk
Posted By waddojohn
Replies: 1
Views: 444
Hi Guys,

This forum looks like a place I could really get used to :)
Not been looking in the right places, thanks for letting me in.

regards

John
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