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Forum: Pentax Film SLR Discussion 04-26-2021, 11:11 AM  
Pentax KM - lens sets itself to smallest aperture
Posted By Ray-uk
Replies: 27
Views: 786
Seems to be a common thing to do if you're using it for video.
I don't do video but the only advantage I can see is that it would allow you to do fade in and fade out shots.

To my mind it is just an easy way to ruin a good lens.
Forum: Pentax Film SLR Discussion 12-20-2020, 04:38 AM  
How about film selfie shot but with your camera showing in it . . .
Posted By Ray-uk
Replies: 75
Views: 6,147
I can't take part because I haven't got a left handed camera with reversed writing :D
Forum: Pentax Film SLR Discussion 12-23-2020, 05:33 AM  
A one owner Spotmatic and its story
Posted By Ray-uk
Replies: 39
Views: 2,466
The marks that show on the bottom of the frame mainly in picture 2 don't look like light leaks, more likely uneven development caused by insufficent agitation during processing. The marks normally coincide with the film perforations.
Forum: Pentax Film SLR Discussion 11-02-2020, 03:49 AM  
My grail, the original, the one and only, "AP" Asahi Pentax
Posted By Ray-uk
Replies: 40
Views: 3,056
Those shots are much better, really shows the camera's true capabilities.
I have always found that if you want decent scans then you need to do them yourself.
Forum: Pentax Film SLR Discussion 11-12-2020, 05:25 AM  
Pentax K2 prism
Posted By Ray-uk
Replies: 2
Views: 618
Thanks for that, so it doesn't look too hopeful. I did find a post elsewhere that suggested the prism from a Minolta XG-1 would fit so perhaps if all else fails I will try that.
Forum: Pentax Film SLR Discussion 04-18-2020, 08:22 AM  
H1a mirror foam replacing query...
Posted By Ray-uk
Replies: 16
Views: 1,523
I have replaced seals in about a dozen different cameras, quite a few different pentax models. I have 2 S1a's that I have operated on and managed to do the mirror foam without dismantling the camera, it isn't easy but it can be done. I never use foam for door seals, I always use black double knitting wool. After cleaning out the old foam (that's the difficult bit) with the help of a small brush I apply black nail varnish inside the goove and press the wool into it before it dries, easy to do and makes a perfect light seal.
Forum: Pentax Film SLR Discussion 03-01-2020, 07:01 AM  
MX wiring diagram
Posted By Ray-uk
Replies: 5
Views: 1,000
I posted this a few years ago but I see in my original posts that it was posted via a hosting site that is no longer working, so for anyone that may need it here it is again.
This is an enhanced image of pentax original.

( Image updated 10/03/20 because of error in image)
Forum: Pentax Film SLR Discussion 05-17-2018, 08:51 AM  
Possible Mirror, Viewfinder or winding problem
Posted By Ray-uk
Replies: 6
Views: 1,665
Definitely a case of sticky shutter, the original lubrication has dried up and is now slowing the shutter.. If the shutter doesn't close with the right amount of force then the mirror is not triggered to return to its down position. Poking it with your fingers won't help and could cause more damage. It will be quite an extensive strip down and therefore an expensive repair, may be cheaper to look for another camera.
Forum: Pentax SLR Lens Discussion 08-11-2015, 04:17 AM  
Asking for help with Pentax K & M lenses on Canon 70D body
Posted By Ray-uk
Replies: 4
Views: 1,758
I frequently use a variety of Pentax K and M lenses on my Canon 50D without problems. The lenses should not need cutting or modifying and will not interfere with the cameras mirror, this only occurs with a few lenses when used on a Full Frame canon such as the 5D.
Ifi you cannot get the adaptor to fit on the camera without the lens then it does look as though the adaptors are at fault.

It is sometimes quite difficult to mount a new adaptor on a lens because they can be very tight, if you look at the inner edges of the adaptors bayonet you will see that these have a cut in them, this cut is there to give some degree of adjustment to the thickness of the bayonet mount. If the mount is a bit loose then you simply insert a screwdriver and prise it open a bit to increase the thickness. If these have been opened too much during manufacture then it can be very difficult to get a lens to fit on the adaptor.
Any problem with the lens not locking into the adaptor can usually be cured by adjusting the sprung lock tab, this has slotted holes and can be repositioned by loosening the screws.
Although all K and M lenses have the same bayonet there can be slight differences due to manufacturing tolerance and some lenses do seem to fit slightly easier than others.
Forum: General Talk 07-11-2016, 03:22 AM  
Should I upgrade to Windows 10?
Posted By Ray-uk
Replies: 86
Views: 5,481
I upgraded from windows 7 pro to windows 10 and wasn't impressed.
There was no driver available for my graphics card so it just ran as basic graphics and I lost a lot of the cards capabilities.
It decided that one of my printers was too old and again there was no driver so that wouldn't work at all.
Once I had disabled all of the uneccessary flashy effects that I didn't need I found I was really back to a poor imitation of windows 7 with extreme limitations.
After a month I wiped the lot and reinstalled my old windows 7 pro.

In my opinion it is a lot of hype with a lot of flashy effects that I don't need.
Forum: Pentax Film SLR Discussion 04-03-2016, 04:34 AM  
Too many cameras - which two to keep?
Posted By Ray-uk
Replies: 25
Views: 2,437
Amusing but cruel, bearing in mind that Simen 1 is from Norway then English is probably not his native language and I daresay his english is better than your norwegian.

For Simen 1's benefit the title should read -- Too many cameras, which two to keep.
Forum: Photographic Technique 02-25-2016, 07:22 AM  
Macro Completely Crazy Macro/Micro Idea?
Posted By Ray-uk
Replies: 15
Views: 2,301
That's the one, perhaps you could mount it on the hot shoe of your camera :)
Forum: Photographic Technique 11-29-2015, 08:46 AM  
Macro Suggestions for improving the quality of photographed negatives
Posted By Ray-uk
Replies: 13
Views: 1,640
The biggest problem you will have with a freehand system is getting the film parallel with the sensor and I would suggest you look at some sort of slide copying device to attach to the end of your lens to alleviate this problem.

I found it interesting that you tried a Pentax 50mm 1.7 so I decided to do a few tests of my own with a Pentax M 50mm f1.7 on a 31mm extension tube against a Macro Takumar 50mm f4, the results were quite surprising.

There are slight differences in the magnification of the samples below because of the physical difficulties of setting the lenses both the same, but it's not enough to matter. Both lenses were set at f8.

First the Macro Tak, full frame

Then the Pentax M full frame

Macro Tak 100% centre crop

Pentax M 100% centre crop

Macro Tak 100% left crop

Pentax M 100% left crop

I didn't bother to post crops from the right because with both lenses they showed the same consistency as the left.

My opinion:

Although the Macro Takumar shows a slight overall lead, the Pentax M 50 f1.7 is more than capable of being used to copy negatives.
The M does show a slight fall off towards the edges but this is only just noticeable when viewed at 100% and for most purposes this wouldn't show.

Hope that helps

Forum: Lens Clubs 11-01-2015, 10:17 AM  
*Macro* lens club
Posted By Ray-uk
Replies: 4,386
Views: 599,020
50mm f4.0 Macro Takumar Preset version on Canon EOS 50D with Sunpak DX 12R Ringflash 1/250 at f11

Same setup as above 1/180 at f8.0

Forum: Pentax Film SLR Discussion 09-02-2015, 07:39 AM  
First development attempt...interesting failure
Posted By Ray-uk
Replies: 31
Views: 3,396
When using a plastic tank it can be easier if you trim the film as in the pic below:

Also if you haven't got a changing bag then load your film into the tank at night with all the lights off, underneath the blankets/ duvet of your bed.
Although the bed is not the ideal place as regards dust it has worked for me many times and there is far more room than in a changing bag.
Forum: Pentax Film SLR Discussion 09-01-2015, 11:17 AM  
First development attempt...interesting failure
Posted By Ray-uk
Replies: 31
Views: 3,396
I certainly agree with the above posts but even with uneven development and fixing I would expect to see some sign of transparency to the film edges.
Your film looks as though it has been exposed to the light during loading or processing.
Forum: Pentax Film SLR Discussion 01-18-2015, 04:37 AM  
Pentax MX shutter speed indication repair
Posted By Ray-uk
Replies: 4
Views: 3,095
The dial in the viewfinder is coupled to the main shutter speed dial with a cable.
Adjustment is possible although from what I remember it's a bit tricky, search online for the MX service manual, all the information is in there.

Service manual here:
Forum: Lens Clubs 02-17-2014, 06:39 AM  
The K-Club!
Posted By Ray-uk
Replies: 3,892
Views: 647,092
Took advantage of the slight improvement in the weather and took my K 28/3.5 out for a walk.

I cheated on this last one as the sky was a bit dull, so I added the sky.

Forum: Lens Clubs 02-19-2014, 08:41 AM  
The K-Club!
Posted By Ray-uk
Replies: 3,892
Views: 647,092
Thankyou both.

It must be one of those shots that you never tire of looking at :rolleyes:
Forum: Pentax SLR Lens Discussion 01-29-2014, 08:38 AM  
different exposure different aperture problem
Posted By Ray-uk
Replies: 7
Views: 997
With the results you have shown it is difficult to determine what the fault is, it could be either the lens or the camera body.
The only way you can really tell is to try a different lens on the camera body, If this cures the problem then you know it's the lens at fault, if it doesn't then it's the camera.
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