[rayallen]

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Taken with Pentax K100D Super body and Takumar F 70~210mm Lens. The prettiest of flowers, but the most oddly shaped.

Thanks for viewing.

Tony

Excellent detail and contrast, Tony.

[180pilot]

The other funny thing about my 300mm , is that the locking pin almost misses the barrel. It has the smallest diameter there then any of my other lenses. Only about 1/8 of the pin is touching the barrel. After juggling with it today, shooting some Elk about 1/2 mile away, I decided I had to make that pin work. Otherwise, because I keep the adaptors on the lenses, and have removed the spring locks, the greater friction of the focus ring on this big lens tends to twist it off of the camera. So, I was trying to focus, hold the lens on and work camera, needed 3 hands. Tonight I decided to file a notch in the lens for the pin. Having some small swiss files at hand. However, having had this lens since in my 20's and having kept it pristine, it was "sweat time". Used a sewing needle to scribe the pin's center on the barrel and started my very slow filing of the Aluminum. Cut, fit, cut fit..:










taking with my Nexus 5X phone

A black touch up paint stick, and now I hear that reassuringly click as lens locks up.

I plan on drilling my other lenses when I can get another K camera body mount from another camera's parts, to use
as a template. Using my drill press and being very careful.

Rascals busting fences:



K-70 300mm Super Takumar 1/500 f? ISO 400 cropped subjects 800 yds. away

[tim60]

Ahhh... mine's different, but yes, I still think it is because it allows the whole barrel to move back closer to the mount. Here is a pic I took with the old DS when I pulled the shims.


Pentax *ist DS 1/180 ISO200

That 300 looks quite different to my STak 300/4.


The mount end is different.
The hood looks shorter.
There is an extra knurled ring just behind the hood.
Is the tripod mount in its proper place - that is different too.
I do not see the aperture ring.


What are the details of your version - front plate?

[Dartmoor Dave]

Tonight I decided to file a notch in the lens for the pin.

I know that purist collectors will howl at the idea, but I've been thinking of doing that with a couple of my own Taks. I also keep an adapter on each lens, and while most of them are perfectly safe just held on the camera by friction there are one or two that are too loose.

After all I'm not a collector, my Taks are my day-to-day shooters, and I don't care about resale value because I won't ever be selling them. So I think it's time to get the files out.

[Erictator]

That 300 looks quite different to my STak 300/4.


The mount end is different.
The hood looks shorter.
There is an extra knurled ring just behind the hood.
Is the tripod mount in its proper place - that is different too.
I do not see the aperture ring.


What are the details of your version - front plate?

I don't have a pic handy of the front but here is my version of the 300mm from the Lens section:

Takumar 300mm F4 (model 2) Reviews - M42 Screwmount Telephoto Primes - Pentax Lens Reviews & Lens Database

Hope that helps,
Eric

[180pilot]

Bought this new in 1968, has; six blades, 77mm filter size and a Manual/Auto slider





One very good reason for leaving an adaptor on this lens is the tripod adaptor clamp. The fiddle time to try and
screw it to the adaptor on camera, with the DSLR's penta prism overhang, and grip, is just unacceptable. Was not a problem on
my Spotmatic.

[tim60]

I don't have a pic handy of the front but here is my version of the 300mm from the Lens section:

Takumar 300mm F4 (model 2) Reviews - M42 Screwmount Telephoto Primes - Pentax Lens Reviews & Lens Database

Hope that helps,
Eric

That explains it. They are different designs. The one I have is the later STak 300/4, which I got sans the auto/manual switch, which is like 180Pilot's. I had to do a workaround fix for the missing switch. Basically a piece of metal to hold the pin in so that the aperture can be changed.

[180pilot]

Scored a lens mount on ebay to use for a drill guide for locking pin into M42 lenses, $13 with shipping.

[Erictator]

Scored a lens mount on ebay to use for a drill guide for locking pin into M42 lenses, $13 with shipping.

That is a great idea! Are you going to drill, or use a dremel like a pin router ? A photo essay of how you do it might be cool!
Thanks for sharing,
Eric

[180pilot]

I will lock lens down in padded machining vise on my drill press and use a drill bit of proper size, ( mic. pin ), with a stop collar on it, as hole is very shallow. Measure/ level 4 times, drill once..... Being Aluminum, these will cut very easy. The camera lens mount locked to the M42 adaptor will guide the bit, but accurately centering/leveling and correcting any bit run-out is imperative. Don't want bit cutting into camera mount hole at all, enlarging it. As, my other lenses have larger diameter against camera mount then the 300, this will be an actual hole not a groove. Probably buy M42 cheap extensions on ebay to drill first, to make sure of correct register.

Camrea Macro Extension Tube Ring for M42 42mm Screw Mount 3 Ring Adapter L8D | eBay

P.S. Just bought my very first modern auto lens for my K70, a Sigma, 17-50mm F 2.8. And, noticed the "hole" in lens mount for pin lock is not round but a oblong, "racetrack", shape. I quess now I understand comments about using a "router". I suppose this is something to do with some kind of slightly different register with some camera mounts? Have to study this a little more before machining my Taks.

[PenPusher]

Takumar fans here in the UK might want to have a look at the London Camera Exchange website today. They've got quite a selection available in their secondhand section for prices that look very reasonable to me, and I would have snapped up a couple myself if I wasn't so broke right now.

I really hope that somebody here grabs that 18mm/f11 so that we can get to see how good or bad it really is.


Usual disclaimer: I have no personal links to seller, etc. . .

I remember the London Camera Exchange from when I was in London during the 1950's/60's, I would have thought they went under years ago.

By the way I think I remember reading about Brixham in Arthur Ransome's Swallows and Amazons books as a child but never actually seen it until your post.

[Knock]

I was out today with my seldom used Super Tak 50/1.4 wide open. PP was done using nik color efex.

[gifthorse]

Super Tak 200 f4

[Canada_Rockies]

EXIF might show 400mm because the last lens I was using before the Tak was the M 400. I changed it after a while. All shots at f/8, ISO 100 or 200 on Av. A couple of shots (not included here, nor uploaded) had "Interesting" shutter speeds when I forgot to set the lens to Man to stop down. Claire, the lady hiding behind the mirror on the Tundra will have been my wife for 53 years July 24th coming.
Any visible age lines are, of course, my fault entirely.

[Cabessius]

Super Takumar 50mm f/1.4



S-M-C Takumar 135mm f/3.5