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Forum: Pentax SLR Lens Discussion 4 Hours Ago  
What cheap manual lens to pair with my new (to me) ME Super?
Posted By Astro-Baby
Replies: 22
Views: 524
If its cheap it has to be the 50mm 1.7 - they seem to turn up regularly. I bagged one last week for 30 in a charity shop and its totally mint and had a decent skylight as well.
Forum: Pentax SLR Lens Discussion 7 Hours Ago  
Missing Rubber Grip on Lens - Replacement
Posted By Astro-Baby
Replies: 3
Views: 399
Here's a shot of what it looks like - scuse the fact its a tatty old Vivitar/Minolta MD fit but I wasn't going to risk it on better glass.

To get the fit right I made up a paper template first but it still required a bit of fiddling to get the join right. Rather than stick it direct I lightly wetted the sticky back of it first to slow the glue from drying and sticking (just like you do with light seals). Got it applied and then wrapped some elastic bands over it while it dried. After 12 hours drying (it probably didn't need that much but I only had enough for a maximum of two attempts) its very solid, quite grippy, good tactile feel and looks pretty good - seems to have worked perfectly as a replacement.
Forum: Pentax SLR Lens Discussion 15 Hours Ago  
Why no review for the classic early 1970s Tokina-made 90-230mm zoom?
Posted By Astro-Baby
Replies: 53
Views: 8,384
I was around in the 70s and buying gear, the first amazeballs zoom I remember seeing was the Vivitar 28/200 which I owned at one time. I found it too big, too heavy and too compromised so almost never used it and preferred primes in 28, 35, 50, 85, 135, 200, yes they were heavy but I seldom took all of them out at once.

Later on there were dozens of ‘me too’ zooms from every glass maker on the planet but I paid no attention at all, recently I have come across quite a few of these as stuff has been thrown in with cameras I have bought. My latest acquisition was a Tamron 35/105 which, according to various web sources, was a marvel in its day but I have to confess I cant ever recall seeing back then. Recently I had a Sigma 39/80 which again according to web sources was the first ever affordable zoom (well sort of...sort of affordable and sort of a zoom) again I dont ever recall seeing one in the day and I used to be camped in various camera shops back then.

I think there was probably so much of this stuff that your Soligor just got lost in the mix. Lots of stuff that today is considered ‘iconic’ is a kind of hindsight thing. Some Minoltas reach iconic status today but back then they were just another camera on the shelf. Its only time that elevates stuff up (or indeed takes it down). Something else is a lot of hardware is market specific - sometimes down to the vagaries of manufacturer preferences, distributer choice and what the retailer wants as stock. So something like a lens may simply have never made it onto retail shelf for anyone to consider - Magazines don't tend to review product the reader can't buy- so no reviews.
Forum: Pentax SLR Lens Discussion 2 Days Ago  
Missing Rubber Grip on Lens - Replacement
Posted By Astro-Baby
Replies: 3
Views: 399
I have seen a fair few posts since I restarted photography with people asking for possible replacement rubber for lenses when the original grip parts company and not seen any really good fixes for this. I have tried to find someone who makes rubber sheets with the diamond or chequer pattern on but had no luck. Lately I have been experimenting with an old Vivitar 135mm on various fixes but last week I found something that really seems to work......

Multifunctional Grip Tape For Guns Cell Phones Cameras Tools Rubber for Phones | eBay


Its self sticky and actually looks quite good when cut to size. Its quite grippy and soft but not squishy. I thought if anyone else is stuck for a solution they may find this useful.

Its actually not too dissimilar to the stuff Tamron have used on some of their stuff in the past. I can't say how durable it is yet but should the glue fail I daresay a bit of contact adhesive would make things more solid. As its used for gun grips I am guessing its likely to be quite tough and durable.

As soon as I get it fitted to the test lens I will post up and give you look with some pics.
Forum: Pentax SLR Lens Discussion 2 Days Ago  
Weird lens behaviour on Pentax K Mount (film SLR)
Posted By Astro-Baby
Replies: 11
Views: 766
Well for anyone who may be interested the film rolls came back today, these are of course the acid test because whatever the wretched camera metering may suppose its the film thats the ultimate judge. The Chinon CE5 despite its 'apparent' wonky metering called it right for exposure on every single pic irrespective of lens mounted. So although its meter suggests much lower values (i.e. it always thinks its dimmer than it would seem so wants wider apertures or slower speeds when any of the zooms are fitted) it actually shows near perfect exposure on actual film (HP5 at 400).

I know the other cameras meters are spot on because they already have had test rolls shot through them and they show near perfect results as well. So whatever the cause of this apparent issue is its not actually affecting the cameras performance at all.

Its very weird but in the light (pardon the pun) of the evidence of perfectly exposed pictures I am going to pass on any further investigation.

This was the Chinons first test rolls soil nothing else it proves the camera is in fine form.
Forum: Post Your Photos! 5 Days Ago  
Black & White More Chrome
Posted By Astro-Baby
Replies: 8
Views: 265
Really clean and a great eye
Forum: Pentax Film SLR Discussion 5 Days Ago  
Ghastly foam.....
Posted By Astro-Baby
Replies: 4
Views: 519
Thats odd my Pentax K1000 had no foam on top of the prism, just a pair of springs attached to a metal frame, ther was a small white coloured foam pad just underneath and to the front of the prism that showed no decay at all.

My K1000 is a made in Japan version so maybe that explains it.
Forum: Pentax Film SLR Discussion 6 Days Ago  
Getting back to my roots... now I have twins.
Posted By Astro-Baby
Replies: 7
Views: 749
I find the biggest downer for me with digital is the vast reams of images that I then have to download and look at. A days outing turns into a whole weekend having to plough through dozens of pictures, and it becomes a pain sitting in front of a PC.

Recent film shots have been much faster, quick flip through the pics and in a few minutes I have the two or three that would be worth scanning, no more messing about with 200 chimped pics.

Ill still use my point and shoot digital for happy snappy stuff and it was useful on a recent packpacking holiday where keeping the weight down took priority, even then I packed an old Konica rangefinder, few of the pics from it worked out but I had fun just using it.

Plus as you say at the prices of film cameras you can get quite a lot of kit for a fraction of the cost of decemg digital, my entire collection of film cameras has cost less han one serious digital.
Forum: Pentax Film SLR Discussion 6 Days Ago  
Ghastly foam.....
Posted By Astro-Baby
Replies: 4
Views: 519
Does anyone know if Pentax routinely used the dreadful dissolving foam inside cameras other than for light seals.

I recently took a K1000 to bits and found none, there was a small foam bumper underneath and to the front of the prism but it was immaculate and didnt need changing. It had a different consistency to the stuff that dissolves into tar.

I am loathe to try and get the lid off my KX as I havent found a guide and I dont know what may lurk beneath its film speed dial.

Much is talked of Olympus and their love of packing the drek distilling foam around prisms, and I have cleaned up two OMs just in time but recently I took a Canon FTb cover off and found that it too made use of the horror foam, luckily Canon had put a plastic cover between the foam and the prism, judging by the damage caused to metal parts which had come into contact with the dissolving foam I doubt the prism would have survived had it not been shielded with a plastic cover.

Recent reading suggests Nikon used this foam in some of the F finders so I am anxious as to whether Pentax used it. I would hate for much loved KX to be on the receiving end of degenerating foam.

Anyone know ?
Forum: Pentax Film SLR Discussion 6 Days Ago  
Any tips for refinishing a K1000?
Posted By Astro-Baby
Replies: 26
Views: 873
The sticky seals are a real headache on K series cameras I have found. The top cover tends to slighktly over hang the door seal channel at the top of the camera making it hard to get a sticky seal in. Jons seals go in easier bit its easiest of all to just take the top cover off. Be super careful with the cover off though, you dint want to bust anything and its easily done by putting fingers where they shouldnt be.
Forum: Post Your Photos! 06-09-2019, 12:51 PM  
Landscape Trebarwith Strand, Cornwall, in B&W
Posted By Astro-Baby
Replies: 7
Views: 279
Amazing pic...truly
Forum: Post Your Photos! 06-09-2019, 08:26 AM  
Black & White Spring in Beijing
Posted By Astro-Baby
Replies: 1
Views: 247
Finally got round to looking through some pics from Beijing and this one caught my eye. I have only recently tried my hand at 'street' photography.

Its been post processed in Smart Photo Editor on a Mac to turn it b&w and boost its contrast a touch.
Forum: Pentax SLR Lens Discussion 06-09-2019, 03:08 AM  
Weird lens behaviour on Pentax K Mount (film SLR)
Posted By Astro-Baby
Replies: 11
Views: 766
Glasbak - thats a really interesting thought. Here where it gets ugly though - I very recently acquired a Tamron 38-100 zoom. Guess what ? Mounted on a Canon FTb the lens reports (based on todays light) f11 at 500th. Stick the lens on the Pentax's with an Adaptall (yes I have an old Adaptall 1 mount and yes its geared for the fixed aperture so the Canon FD bodies are correctly compensated) and hola the Pentax's agree at about f11 (once again the K1000 seems at time a bit undecided and can't make up its mind whether its F11 or F8 it thinks is best) so here we have a different lens and once again all cameras' (even one from different manufacturers via an Adaptall) agree on the light reading. So what does the Chinon reckon when its plugged onto that - its off by two whole stops so its 'close' but not close enough for my liking.

Now what makes it super annoying is if I go back to putting a Pentax 50mm on the Chinon, or a Vivitar 135mm or a Hoya 135mm on it the Chinon and Pentax all agree so its definitely lens related in some way - your idea that something could be blocking the light sensor seems possible given the fact that three lenses work perfectly well and can agree on metering, two lenses don't work at all being out by 4 stops and one lens indicates a 2 stop difference.

Its all made more frustrating by the fact that the local lab still haven't developed two rolls from two weeks ago which were shot as test rolls using different lenses. Until they come back I just have no idea whether this problem is even real - i.e. the camera may be giving perfectly sensible readings but its meter may be measuring something which the Pentaxes aren't. The FTb for instance only measures a small central area of the frame, the Pentax K cameras are centre weighted (as far as I know) and I assume they are metering from the large central spot, the CE5 could be measuring something different (the blurb for it suggests its centre weighted but also that it has a pair of cells so it could be basing its optimum settings on some difference thats exaggerated by different lenses). Its interesting that when a prime is fitted it comes to agreement but when a zoom is fitted it wants to overexpose compared to other cameras (the meter thinks theres less light).

I think until the test rolls come back I am stumped on this because I am damned if I can see anything wrong with the camera itself. Maybe it has zoom allergy :) I know lots of photographers do :)
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 05-26-2019, 09:25 AM  
Canon Removing Universal Hot Shoe Pin? No 3rd Party Flash Compatablity?
Posted By Astro-Baby
Replies: 2
Views: 395
Well thats what happens when the market starts to shrink - maximise revenue by closed systems :)
Forum: Pentax SLR Lens Discussion 05-26-2019, 09:23 AM  
Weird lens behaviour on Pentax K Mount (film SLR)
Posted By Astro-Baby
Replies: 11
Views: 766
Well this little puzzle has completely done my head in. Whatever test I do, however I evaluate its always the same. Put any lens on the CE5 body and it is as happy as Larry EXCEPT the Sigma and the Chinon Zoom. Put those ltwo lenses on any other camera and all works fine. Its like the CE5 has an aversion to those lenses but I am damned if I can see why or how that is even possible. I have a film in for processing right now which was shot as a test role to see if the meter is in fact correct - perhaps the lenses are just very poor and really do have that much effect.

Its always possible I am guessing that poor quality glass could be throwing up a headache but that wouldn't explain why the other cameras (all original Pentax) don't seem to have a problem. It may be there is just some strange incompatibility. The film test will hopefully prove that one way or the other.
Forum: Pentax Film SLR Discussion 05-26-2019, 09:13 AM  
Getting back to my roots... now I have twins.
Posted By Astro-Baby
Replies: 7
Views: 749
Good luck on your journey with film, like you I got fed up with digital and went back to film. At times its frustrating but I actually ENJOY taking pictures again.
Forum: Pentax Film SLR Discussion 05-24-2019, 05:41 AM  
How many film cameras do you have?
Posted By Astro-Baby
Replies: 355
Views: 19,012
Well I have finally reached stop point with mine - last two I will buy for some time now as I really need to (a) get going with taking some actual photos and (b) need to raise the scratch to get each one professionally CLA'd

First up is a Minolta SRT101 I got off eBay. It was in super shabby condition but some love and attention has got it all mostly working apart from the meter which is running buy way out of whack. Checked the prism, the photocells etc and everything works it just didn't meter correctly (the adjuster for it will make it move but only by about 1 stop and its 4 stops out ). The final bag was a Canon FTb off eBay. Overall great but the prism had a mild touch of fungus, film counter window had detached and surprise surprise the seals had gone completely. I don't mind the seals being shot to bits - if they are really dried out it makes them a lot easier to clean off. Other than that the FTB is perfect, good cosmetics, someone has adjusted it for 1.5v batteries, super smooth winder and fairly clean FL lens.

I now have what I consider to be the best that each of the big 5 could assemble in the golden age - not necessarily the best they ever made but in each case a groundbreaker and a good example of the art of making a magic box.

I did a timeline for the collection and its quite interesting to see them in the light of what was around at the time.
Forum: Pentax SLR Lens Discussion 05-17-2019, 04:35 PM  
How many 50mm lenses do you own? Favorite? What have you let go?
Posted By Astro-Baby
Replies: 184
Views: 17,499
Hang on.....I need to do an an inventory check :)
Forum: Pentax Film SLR Discussion 05-17-2019, 04:19 PM  
light seal replacement: (diy) first time/last time easy/difficult??
Posted By Astro-Baby
Replies: 23
Views: 1,187
If this is the first time doing seals I would really say get a kit from Jon. Even if its not your first rodeo its still worth getting a kit from Jon. Especially if the camera is a snotty one that has odd shaped seals. Cutting foam is a pain. I only make my own seals when Jon doesnt have a kit. The Chinons are another mare of a job as they have a fairly complex seal on the door itself that has to be made up out of sections of foam. Its not too bad on a camera like that if you have some experience but I would have hated to tackle it as a tyro.

Something else to think about.....the cheap and nasty kit I got off ebay also didnt inlcude some of the small seals on the door corners for my Pentax KX.

I cut up foam when I have to but its never a job I like, especially the long thin strips for the door channels.

I am frankly always amazed to see posts online where people try and do this job on the cheap. I mean why would you object to spending less than it costs to process a film when decent seals can make a camera and bodged ones can break a camera......one blob of decayed gunky seal dragged into the curtains and its going to be expensive to put right. Heck even getting it on a focus screen can spoil your day.

Generally speaking the door channel seals are either 1.5 or 2mm thick foam, the hinge seals are variable. Some have a thickish foam on the body, some have felt, some have foam on the body and felt on the door and some have a foam base with a felt outer covering it varies lots by camera model. Mirror dampers are most often 2mm but the OM1 has very thin L shaped dampers on either side rather than a continuous strip.

The worst job with sticky back seals is the door channels...its a almost always stressful. Jons seals are made of a special foam, you just press it into the channels and it expands to a tight fit, no sticky back needed so if you mess it up you can try again.

The worst door channels I have done are the top channel on my Pentax K cameras, the top cover on the camera tends to overlap the channel slightly and it makes its a tiny bit harder much easier though with Jons seals.
Forum: Pentax SLR Lens Discussion 05-17-2019, 10:25 AM  
Weird lens behaviour on Pentax K Mount (film SLR)
Posted By Astro-Baby
Replies: 11
Views: 766
Steve,

I'll try and answer the questions and thank you for your help and interest...

First off yes the Sigma AND the Chinon lens both exhibit the same weird behaviour - but with every other K mount lens I have - Hanimex, Pentax, Hoya all cameras are perfectly well behaved including the Chinon.

The 'wrong value' - I can see where that may have been vague. OK - if I mount up a 50mm f1.7, Film Speed set to ASA 400 for all cameras and shutter speed set to 500th with a good bright sun I would expect to see the meter in almost any camera give me f16 or thereabouts (i.e. it may vary by 1/2 a stop either way and with a big telephoto on it may vary quite a bit) in this instance all cameras are set for ASA 400, no exposure compensation and shutter at 500th. With the 50mm (or indeed any lens except the Chinon and the Sigma) all cameras report - yup - f16 (the K1000 sometimes can't seem to make its mind up and oscillates between f11 and f16 but thats ok. All other cameras in the collection will go at f16 with a similar 1/2 stop difference which as I said above could be a number of factors between different designs and meter sensitivity etc . So in that config I would expect a 28-50mm to be there or thereabouts - nope - when you put that on the meter will insist on f5.6 at most but ONLY when that lens is on the Chinon body. So its very specific - if I put that lens on a Pentax body the meter will show f16 is good (which it would be) - put it on the Chinon body and it reckons f5.6 which is clearly wrong for the light. By the way the light is consistent and and all tests are done in a matter of minutes on a clear sky so theres no real variation in light - certainly not 4 stops worth :)

So yes - your second point about consistency the answer is yes - the Chinon body is configured exactly the same (i.e. ISO value set, exp comp set at zero, pin engaged, apertures are fully open, the target is a radio mast about 5 miles away which gives a picture in the bottom half of the viewfinder of dark(ish) grass and trees and the top half being sunny sky (sun behind me giving solid illumination).

The aperture ring tab/follower is working fine on all lenses at least so far as I can tell - if I put the camera on brief and keep it there with a cable release I can look inside and although once a lens is mounted I can't physically see the tab I can see the ring that the tabs mounted on moving as the aperture shifts and the meter in the Chinon is completely consistent - i.e. it will suggest f5.6 at 500th but if I drop the speed down a notch to 250th the meter will centre up on f8 of thereabouts - so its consistent but madly wrong.

Perhaps it is just a weird incompatibility is just I struggle to see how it can be - its pretty much just a mechanical linkage.

Unfortunately I don't have an M42 adapter
Forum: Pentax SLR Lens Discussion 05-16-2019, 01:02 PM  
Weird lens behaviour on Pentax K Mount (film SLR)
Posted By Astro-Baby
Replies: 11
Views: 766
Hi Guys,

The aperture tab is properly engaging on the Chinon I know this because (a) when you shift aperture the meter is responsive in the correct manner e.g. it responds one stop at a time albeit on what seems the wrong value and (b) by putting the camera on brief and locking it with a cable release I can look inside through the shutter curtains and see that as you twist the aperture the follower tab on the camera moves with it. It can't be the aperture tab having an issue as its perfectly happy with any other lens (except the Sigma).

The iris on both the Sigma and the Chinon lens is responsive in all situations - it stops down correctly and activates perfectly on shutter release - looking down the lens you can see it stopping correctly when the stop down lever is pressed so the lens seems on its own terms ok and they both work fine with either of my Pentax K bodies.

You can see what I am baffled here - everything functions as it should but the readings are wrong but only in a combination of Sigma/Chinon Lens on Chinon Body . Its obvioulsy some sort of compatibility quirk but I am damned if I can see how this is even possible on a purely mechanical coupling.

Anyway to see whats REALLY happening I have put a roll of HP5 through the camera tonite - one set of shots on AUTO and Manual mode with one of the pesky lenses and one set of shots with a Pentax 50mm f1.7 and same again some on AUTO some on Manual and I will have a look at what comes out the bag on these and see if its REALLY ok. The thought occurred to me that the lenses may actually be VERY slow and their F stop markings are way out but that makes no sense. I'll let the film roll decide the outcome.
Forum: Pentax SLR Lens Discussion 05-15-2019, 12:31 PM  
Weird lens behaviour on Pentax K Mount (film SLR)
Posted By Astro-Baby
Replies: 11
Views: 766
I have come across a really weird thing with a lens and camera and its driving me insane as it makes no sense at all. I'll try and explain and if anyone has any ideas they would be most gratefully received.

OK heres the issue -

I have two non Pentax K mount lenses. A Sigma 40-80 and a Chinon 28-50. When I mount these on my trusty KX and K1000 the meters both agree with the reading taken with a Pentax 50mm 1.7 and agree with an Olympus OM-1 and a Canon AE-1 so we have unanimous vote from all cameras with a range of lenses as to the correct aperture and shutter. Alls good it would seem.

Now I mount the Pentax 50mm 1.7 on a Chinon CE5 and it also agrees (its about 1/2 a stop off but there is a small variation between all of the cameras tested above and I could put that down to different patterns of light meter, sensitivity, differences in lens design and slight differences in focal length of various 50mm lens. So whats the problem ? - All cameras agree with their respective 50mm lens so life is good. Heres the problems - when I mount the Chinon or Sigma lens on the Chinon CE5 it reports a totally different aperture/speed and its out by as much as 4 stops in bright light (though it comes within a 1/2 stop on a dim light) - its out in the down
direction (it thinks its dimmer than it is).

Its not the tab in the camera as the Chinon responds perfectly well with any other lens and is always in the mix compared to the others. So the issue is I have two lenses which work perfectly on two different Pentax cameras and yet create weird meter readings on a non-Pentax. I can see no reason for this although the view through these two lenses is quite dim even when they are wide open.

So is it that the lenses are rubbish or is there some other possible issue that is perhaps unique to the Pentax K mount ? Are there possible compatibility issues for instance ? The lenses all have their aperture tabs working as they work fine on two Pentax cameras. Its just doing me head in trying work out whats going wrong here. It can't be the camera as it responds perfectly well with any other lens and it can't be the lens because they work perfectly on the two Pentax bodies.

I could say -oh who cares anyway - just sell the lenses and move on but (a) I don't want to sell someone a pup (b) I am curious as to why, how this is happening and (c) its could something to watch out for with other lenses when they are coupled to the Pentax cameras which are my real interest in all of this.
Forum: Pentax Film SLR Discussion 05-15-2019, 12:14 PM  
Scanning film.....
Posted By Astro-Baby
Replies: 31
Views: 1,381
Wow - so many posts - thanks guys I will read these up this weekend when I have more time. Been a bit busy of late messing with cameras and work has gotten in the way. I do thank you all for your help.

Mel
Forum: Post Your Photos! 05-15-2019, 12:13 PM  
Back from Japan
Posted By Astro-Baby
Replies: 8
Views: 693
Yes the wouldn't have minded. Just no flash.

The Edo Museum was amazing - the models/dioramas they had of what Edo (now Tokyo) would have looked like were just a killer. Hundreds of figures all in everyday poses. The layouts were very large and had opera glasses so you could scan across the whole layout and look at Samurai quarrelling, women hafggling the price of rice, street vendors selling wares - unfortunately the light was very dim for these and without a tripod none of the stuff I shot was up to much.

Photolady - yes please - move the post there if you think its best. I shall leave it up to you as you will doubtless exercise better judgement :)

Mel
Forum: Post Your Photos! 05-10-2019, 10:51 AM  
Back from Japan
Posted By Astro-Baby
Replies: 8
Views: 693
It was awesome - thanks
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