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Forum: Pentax Medium Format 12-01-2017, 06:33 AM  
Pentax 6x7 film setting
Posted By MysteryOnion
Replies: 7
Views: 358
Setting the ASA is only needed if it has a meter...?
If so equipped, the dial is located with the shutter speed dial and you need only lift the ring up to move the ASA setting.
Otherwise, a plain prism with body has no need for setting the ASA.
Hope that helps.
Enjoy that 6X7!
Forum: Pentax SLR Lens Discussion 10-11-2017, 09:15 AM  
Please help..! I got scammed, need to fix the lens...
Posted By MysteryOnion
Replies: 21
Views: 1,598
If you are good at looking at the images via a Photoshop or GIMP or your favorite flavor... toy with the levels and curves to look deeper into the provided images.
Especially if the images show signs of painting or covering up of details. If the image is overcooked or showing odd "jaggies", that is a walk away.
If you can access the sellers posted images still, give it a try. How much can you see or did the aperture get stopped down to f22 to prevent you from noticing?
Forum: Pentax SLR Lens Discussion 10-11-2017, 05:14 AM  
Please help..! I got scammed, need to fix the lens...
Posted By MysteryOnion
Replies: 21
Views: 1,598
That is a nasty specimen...yikes.

As all have already said...Chase seller first.

Depending on conditions, the fungus might have done serious damage or hardly any.
I can't tell by pictures.
I've gone after many fungus lenses...on purpose...and only two out of dozens (44-48 lenses...lost count) were beyond cleaning.
Forum: Pentax SLR Lens Discussion 10-11-2017, 05:15 AM  
Please help..! I got scammed, need to fix the lens...
Posted By MysteryOnion
Replies: 21
Views: 1,598
That is a nasty specimen...yikes.

As all have already said...Chase seller first.

Depending on conditions, the fungus might have done serious damage or hardly any.
I can't tell by pictures.
I've gone after many fungus lenses...on purpose...and only two out of dozens (44-48 lenses...lost count) were beyond cleaning.
Forum: Pentax Film SLR Discussion 08-04-2017, 07:42 AM  
Pentax Auto 110 problem
Posted By MysteryOnion
Replies: 4
Views: 504
If it is firing with no batteries, then that is odd...? You should hear the click, but the release should relies on separate part to capture and hold for the magnet to time the release. If you are looking to get inside, look for the rails and the armature that rides on it. It sound like an issue there. If the rails are clear, look at the small tab along the mirror cage. If it is clogged...

A110mirrorlever by Warren Yee, on Flickr

...then the shutter does not come to rest and the system does not reset...forever repeating the firing sequence.


Below is the other actuator that might be having problems.

A110cockinglever by Warren Yee, on Flickr
Forum: Troubleshooting and Beginner Help 07-23-2017, 01:32 PM  
Battery grip stuck
Posted By MysteryOnion
Replies: 9
Views: 547
Hey fellow K3+grip users.
If you are all-weather shooting, don't forget to separate the grip and body to dry off.
The alignment lugs can puff up with corrosion and make things difficult.
I dab down the lugs with a film of silicone grease.
Forum: Pentax Medium Format 06-29-2017, 04:47 AM  
Pentax 67
Posted By MysteryOnion
Replies: 10
Views: 574
One quick fix...
Forum: Pentax Medium Format 03-28-2017, 09:19 AM  
Pentax 6x7 Focus questions..eyes are getting old and its been a while!
Posted By MysteryOnion
Replies: 17
Views: 1,269
I'm shocked... no surface check comparator?
Well, it looks as if it is Brentford or bust.
I'll make a note of that about Harrow...thanks.

Way...way back when I sent my first 6x7 camera to Eric, it felt like a new camera when it came back and still works perfectly.
The 6x7 bodies I've now worked on I've tried to get that feel of all oiled or greased up and clean like that first body.
Good luck with it...Well, I hope you are ready to send it off. It is a good feeling to get a near perfect camera back.
Forum: Pentax Medium Format 03-27-2017, 05:00 AM  
Pentax 6x7 Focus questions..eyes are getting old and its been a while!
Posted By MysteryOnion
Replies: 17
Views: 1,269
If you are looking to send it off because the focus is still not quite right, consider asking for them to check:
If the body and mount calibration is the cause...if any shims are missing.
Correct calibration of the focusing screen...for errors.
Also, ask about the condition of the lone pad for the mirror and if the mirror was twisted off angle.
These are my things to look at if you've ruled no luck with tripod shooting, 125th speed and greater or pressure plate issues?
Forum: Pentax Medium Format 03-24-2017, 10:08 AM  
Pentax 6x7 Focus questions..eyes are getting old and its been a while!
Posted By MysteryOnion
Replies: 17
Views: 1,269
Ruling out the screen calibration as the error...
One method...try to check the focusing screen with a small focus aid and and look at a target out at infinity? I use a small focusing loupe sitting on the screen, it has a base that is only an inch or 24mm wide so I can move it around. On a tripod, I check the four corners against the middle and move the alignment around to see the same target as all points. It helps to first do a check as all points and then come back with a wiggle of the focus ring at all points. This will help you see if it seems to be different. Also, try setting the focus at the best corner setting and come back to the center to see if it matches. Properly calibrated, you should see not differing settings.

Precaution against other errors...extra step. Check at the film plane first. If someone had repaired it and took the mount apart loosing or mixing up the shims, the lens mount could be the issue and not the screen. If possible, do the five point check with a focusing screen at the film plane first before altering the screen above.

You'll need to get under the trim frame by way of two screws and the two alignment posts to access the three screws that adjust the height and get all 5 points to match up.

If you are not comfortable in doing it yourself, then check with a repair technician to get it done.

Pentax 67 finder bay diagram by Warren Yee, on Flickr
Forum: Pentax Film SLR Discussion 07-07-2012, 05:02 AM  
MX ASA/ISO setting question
Posted By MysteryOnion
Replies: 4
Views: 1,636
I recall the it is ...

32 40 50 64

Check out the manual for free...

http://www.butkus.org/chinon/pentax/pentax_mx/pentax_mx-splash.htm
Forum: Pentax SLR Lens Discussion 04-11-2011, 09:34 PM  
m28/2.8 - focus to infinity...and beyond
Posted By MysteryOnion
Replies: 8
Views: 2,707
You have a situation where the three lock screws have come loose. This is due to either age has caused the failure of the "thread-lock" applied to the screws or the lens had been repaired and no new "thread-lock" was reapplied. The trick is to reset the infinity... you will need to open the lens. The procedure is easy...

Spin off the name ring at the front...try wearing rubber gloves to increase friction.
locate and remove the three shroud screws with proper jeweler's driver.
locate the three lock screws that will be under the shroud
adjust infinity first and then loosen screws, but don't remove is the tiny washers are a pain
rotate focus ring to infinity and re-lock one screw
check your results on the camera and try to verify in good light at a distant target
if it all looks good, lock all screws and remount shroud and finally name plate.
Forum: Pentax Film SLR Discussion 01-29-2014, 07:49 AM  
Skipping shutter - ME Super ...
Posted By MysteryOnion
Replies: 6
Views: 1,234
Thanks Jean Poitiers... I've actually had my 15 seconds of fame on "The Real World" when they shot in Boston and hence... I thought of that television line.


If the bottom plate is dented or bent in some way, that will sometimes lock the cap on. Although the slot is gouged off, consider removing the bottom plate to have a look on the other side of the lid. If it happens to be bent, place the plate on a flat surface and with a wooden dowel with a well sanded end and a 12oz. hammer... do some auto body style tapping. I've done this to an MX upper plate and got it almost to the point where you could hardly pick out the repair.
Forum: Pentax Film SLR Discussion 01-29-2014, 07:55 AM  
Pentax ME opaque/dull pictures
Posted By MysteryOnion
Replies: 38
Views: 2,280
That is unusual, but it is a good thing if he compensated it. When you get it back, make sure it is able to work at the extremes of the meter settings... see instruction manual for the limits of the meter. More than likely the meter was ill-adjusted by someone tinkering with it. Still, if it works for 50 to 800 iso/asa speeds... super good!
Forum: Film Processing, Scanning, and Darkroom 05-26-2012, 04:18 AM  
Caffenol Recipies
Posted By MysteryOnion
Replies: 12
Views: 3,061
Yes, that is the connection. The young photographers I run into are very puzzled when I ask them if they ever tried to turn off as many of the features as possible and really use there instincts to find the shot and not just post process it. I asked one digital gal if you tried simply not to chimp after each shot and to that she said that "...but I might lose a good shot if I don't check it first..."

I was chatting at a store with a young man who just had picked up a Diana for an adventure in film photography and he had been doing digital ever since his mom handed him a point and shoot. He had mentioned all his Photoshop-Fu skills prior and along the subject, I was describing film curves and how developers roughly worked... "Whao-wow! (or something like that)... just like editing photos!?" He suddenly understood where it obviously had come from and short of giving him a heart attack from the excitement, I mentioned Caffenol and Parodinal. "...Holy f#$%@#% s@$#... where was I while this stuff was out there?"

This is great fun and a novelty as it might seem on the surface, but is quite fascinating as you continue with it.
Forum: Pentax Medium Format 12-13-2010, 03:26 AM  
Blowup diagram/repair notes for 67 55/4
Posted By MysteryOnion
Replies: 1
Views: 2,441
I don't have a exploded view, but if you are pulling the lens open due to oil on the diaphragm? The challenge is that you will need to open the lens from possibly both sides. On the Pentax 6x7 lenses I've open and cleaned a few of them and they seem to have similar layouts. Here is a basic walk through just to give you an idea.

To access the Front as far as seeing the Helicoid... (oh... -to- meaning going from one to the next)
Name Face Plate -to- Shroud and screws -to- Clamping screws -to- Focus sleeve (if the Name Face plate has no spanner notches, try wearing rubber gloves for extra grip.)

To remove front groups to expose aperture cavity...
Retainer ring with lens spanner -to- group sleeve or next retainer

Working from the mount side...
Mount screws -to- Mount plate -to- flat black Shroud plate screws -to- Shroud plate -to- Aperture Position Blade -to- Aperture Yoke -to- Yoke spring -to- Stop-Down Lever spring post -to- Stop-Down Lever pivot Screw and spring

Removing the rear group...
Shroud/Sleeve with lens spanner or Retainer with lens spanner. NOTE: that most are a rear group that is easily spun off.

Removing the aperture cup...
Assuming that there is no obstruction from the front, you will see the cup or aperture assembly can come straight out...also you may need to separate the upper half from the base or cup to completely remove. From the rear, remove three screws, but not that they are not fully seated, only thread locked in place. The tension is low when reseated and the screw must be thread locked back. Do not try to remove more than the screws holding the cup.

Thats it... or all in general...been a while since I was inside the 55mm so I hope it helps.
Forum: Pentax SLR Lens Discussion 09-26-2013, 06:57 AM  
Pentax A 501.4 pin not recognized by k-5
Posted By MysteryOnion
Replies: 13
Views: 891
sounds like the tiny spring under it is missing?
Forum: Pentax Film SLR Discussion 05-11-2013, 07:58 PM  
Diagnosing light leaks
Posted By MysteryOnion
Replies: 9
Views: 2,308
Have a look at the negatives... is the leak beyond the frame of the shot and extends to the sprocket holes? This will help to determine if the leak is related to the shutter sided or the film door.
Forum: Pentax Film SLR Discussion 01-28-2013, 11:01 AM  
Fault with ME Super, winder and shutter jam.
Posted By MysteryOnion
Replies: 10
Views: 8,840
Sounds like you have it covered...

Just to add and I forgot I had it in my album...

Forum: Pentax Film SLR Discussion 10-25-2012, 03:12 AM  
K1000 Surprise in The Prism
Posted By MysteryOnion
Replies: 11
Views: 2,472
I'm glad to hear some info of the K1000 variants. At last count... six versions?

I'm digging through my piles of photo junk and let you know if it is the "new" or "old" version.
Forum: Troubleshooting and Beginner Help 11-09-2012, 03:37 AM  
Basic Cleaning of Lenses
Posted By MysteryOnion
Replies: 13
Views: 1,705
The never ever touch method is not necessary and if you have finger prints and such, you have to clean it off.

Well, avoid Windex (high water content), Ajax (abrasive), Pledge (wax and polymers). However, some camera specific cleaners will work to certain degrees. It is more the cloth that will need to do the "heavy lifting".

Not a good material. Cotton cloth even if worn and fuzzy is going to have loose dirt and grit that will move around and get reapplied to the surface of the lens and scratch.

For years I've used a microfiber cloth designed for photographic optics... not the stuff for car windows or household mirrors. For example, Pentax sells a microfiber cloth last time I looked, but you just need one that is made for fine optics like rifle scopes, telescopes, microscopes and cameras lenses. Microfibers will hold tight the dirt and will not easily release them. Even if they say it will wash off in a laundry it actually won't completely come clean. I will use a Microfiber cloth for about six months to a year and then stop using it and just replace it for a new one instead.

For heavy grease, Eclipes optical cleaner is a Methanol based cleaner and will evaporate very fast... don't use it with PEDC*PAD as that stuff scratched my lenses. If is great for when you need to use a good damping amount on an area.

Careful using cotton based products like "Q-tips". If you must, it is best to get it very damp... no need for dripping wet... with a cleaner first and then use it. Dry is bad, as it will mean the fibers are too stiff and dirt will not be enfolded by the fiber, but just get dragged around and scratch the surface.
Forum: Troubleshooting and Beginner Help 11-04-2012, 06:13 AM  
Pentax P30n problem
Posted By MysteryOnion
Replies: 4
Views: 1,810
Just guessing here...So the mirror is stuck in the up position and the cycle it sounds like it is stuck the state when it is to tell the system that the shot is finished and that is already reset?

Is the aperture stuck in the open (normal view) or stopped-down (taking picture with aperture set) position?

I would also hazard that if there is any decayed foam (a common problem) that it will need to be disassembled and cleaned.
Forum: Pentax Film SLR Discussion 10-24-2012, 05:27 AM  
K1000 Surprise in The Prism
Posted By MysteryOnion
Replies: 11
Views: 2,472
Actually, the critter must have penetrated the outer black coating along the sharp ridge of the prism.

I'll check to see if I still have a spare K1000 prism... if I find it you can have it.
Forum: Pentax Medium Format 10-31-2012, 06:16 PM  
Wonky 645 Meter
Posted By MysteryOnion
Replies: 5
Views: 1,116
Well, I wanted to stay out of suggesting anything as I have yet to win a broken 645 at auction so as to it take apart...however, my 2 cents worth is this...

The thing that comes to mind first off is if the push button method of setting speeds relies on a usual memory function.
The pressing of the release button to activate the meter for displaying prior to shooting the picture is not matching the recorded setting that was gathered just a fraction of the second prior to starting the cycle of raising the mirror and opening the curtain.
It seems the first place I would check is the contacts running to and from the release switch and check if the mirror box if it has a contact switch that must be set to confirm the sequence was started properly prior to the mirror going up.
Some contacts do get a little oxidized or even gummed up over time. The other factor is how the control panel buttons are wired and if the connections are soldered or clipped in place and if one of the connections is not communicating well... i.e...a steady pulse at a know value would be computed as 1/250th, but a irregular pulse of the same value might be computed as 1/15th.

This of course is not a spray it and see issue. The repair manual and some familiarity with camera repair is needed.
Forum: Pentax SLR Lens Discussion 10-29-2012, 05:23 PM  
Mr. Klutz's Lens Repair Shop
Posted By MysteryOnion
Replies: 11
Views: 1,045
So it is either a 1.5mm or 2mm

try checking

Micro-Tools, Camera & Watch Repair Tools - Home
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