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SLRs - the unRF For those of you who must talk about SLRs, if only to confirm they are not RF.

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Old 11-10-2016   #2481
maryland_fotos
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No, at least I don't think so Did a bit more systematic test with the S2A earlier this week with focus and aperture, so will help verify if I have any issues. Wasn't at infinity though. I did post at least one picture in one of these threads a few weeks back; infinity focus seemed okay.

Now that I am a bit more comfortable loading and unloading film with the S2A I am beginning to enjoy it. The waist level finder is fun, my first experience with the concept. Although not a walk around camera, at least for me. More like a go somewhere, pull out the camera and tripod, take pictures, and then put it all back in the car.

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Originally Posted by unixrevolution View Post
That is a definite!

So since you have an S2a, did you have to replace your viewfinder foam? I did the Moleskin routine with mine, but I haven't developed my test roll yet to see how good the focus is. It still seems a tad soft at infinity but I don't know if that's natural or not.
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Old 11-11-2016   #2482
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Quote:
Originally Posted by maryland_fotos View Post
No, at least I don't think so Did a bit more systematic test with the S2A earlier this week with focus and aperture, so will help verify if I have any issues. Wasn't at infinity though. I did post at least one picture in one of these threads a few weeks back; infinity focus seemed okay.

Now that I am a bit more comfortable loading and unloading film with the S2A I am beginning to enjoy it. The waist level finder is fun, my first experience with the concept. Although not a walk around camera, at least for me. More like a go somewhere, pull out the camera and tripod, take pictures, and then put it all back in the car.
The problem with the S2's is that the foam rots and the screen moves, so the focus point apparent and focus point actual differ. The distance scale will work, but the image will tell you something else. It's easily recognized by racking the lens to infinity. If the infinity distance is soft, foam is shot.

I only noticed this on mine after a trip to the faire. Some of my wide-open shots that I nailed the focus on are back-focused to the point of non-usability. Infinity now looks sharp(er) but I don't totally trust it yet.
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Old 11-12-2016   #2483
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Shutter button
Old 11-14-2016   #2484
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Shutter button

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Originally Posted by Greyscale View Post
I have that shutter button accessory on both my F2's - it makes a big difference IMHO.
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Old 11-16-2016   #2485
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New glass. :-)


Nikon F2A with Nikkor 24/2.8 Ai by Mike Novak, on Flickr
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Old 11-16-2016   #2486
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$10 estate sale pickup


Pentax K1000 by Mike Novak, on Flickr
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Old 11-16-2016   #2487
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Quote:
Originally Posted by Greyscale View Post
$10 estate sale pickup
Pentax K1000 by Mike Novak, on Flickr
well done complete bargain
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Old 11-16-2016   #2488
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Rollei SL35 with HFT Planar 50/1.8 by Mike Novak, on Flickr
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Old 11-16-2016   #2489
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Quote:
Originally Posted by Greyscale View Post
$10 estate sale pickup


Pentax K1000 by Mike Novak, on Flickr
Great bargain, and a wonderful shooter. The 28/50/135 combo is underrated. And those CPC 28's are pretty good.
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Old 11-23-2016   #2490
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Old 11-27-2016   #2491
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Old 12-02-2016   #2492
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Here it is - my biggest, and most primitive SLR:
Ensign Roll Film Reflex. by Berang Berang, on Flickr

Shoots 6x9 on 120. One shutter speed. Max aperture f7.7 - mirror slap that causes land slides. I'll do a full report once I get the test roll back.
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Old 12-05-2016   #2493
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Old 12-05-2016   #2494
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Mike, my first SLR/serious camera was a Yashica TL-Super that I bought discounted as a demo model, in 1972, when I was a university student. Mine had the f1.7 Yashinon lens.

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My favorite combo
Old 12-06-2016   #2495
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My favorite combo

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Old 12-07-2016   #2496
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Current landscape setup – Mamiya RZ67 with 180mm f/4.5 – this is from last summer but planning to get out again soon for some shots around the city.
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File Type: jpg 15284888_1042227739237055_8004969677564287258_n.jpg (73.8 KB, 25 views)
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Old 12-12-2016   #2497
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Something a bit different for a change...and please tell me if I have got anything wrong!

IMG_2891 by dralowid, on Flickr

In the foreground is a Pentina M. This is a leaf shutter interchangeable lens SLR. In the background a Pentaflex 8 from roughly the same period. Though obviously different colours they both share the same body covering. The Pentaflex is a highly spec'd, fully featured, very heavy 8mm camera with what I am told is an Altissa mount?? (no idea how or about register).

The internet tells me that the reason for the existence of a leaf shutter SLR was to achieve higher speed flash sync for the electronic flashes that were then becoming more reasonably priced. I know not.

The Pentina is somewhat fiendish within. The shutter is just behind the lens and therefore must be open for viewing. The sequence of events when the shutter is depressed is, I think, as follows.

When looking through the viewfinder, the shutter is open, the automatic aperture is open, the mirror is down and a light baffle is in front of the film.

Press the button and...as far as I can tell...in no particular order

The shutter closes
The aperture closes
The mirror goes up
The baffle goes up
A baffle goes up inside the viewfinder (to stop any stray light)

And then the shutter fires.

Wind on and...

The baffle comes down
The mirror comes down
The viewfinder baffle goes down
The aperture opens
The shutter opens

Well, that is what I think happens. Please correct me if I am wrong.

At the moment the thing is very stiff, we shall see if I can improve it...hmm.
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Old 12-16-2016   #2498
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Having got it to work I realise I have the Pentina sequence wrong...but haven't quite worked out what is really going on yet.
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Old 12-19-2016   #2499
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Quote:
Originally Posted by Dralowid View Post
Having got it to work I realise I have the Pentina sequence wrong...but haven't quite worked out what is really going on yet.
The Mamiya RB SLRs have a similar sequence with a baffle and what not, but no auto-return mirror.
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Old 12-28-2016   #2500
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Recent thrift store find . . .
Old 12-31-2016   #2501
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Recent thrift store find . . .

Man, I really like this one - maybe more than my AE-1 Program.


Canon AT-1 by Mike McGarty, on Flickr
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Old 01-01-2017   #2502
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Mingca S-201. A hard to find camera in this LN condition. The lens is a Biotar copy and with 3 lanthanum glass elements.



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Old 01-01-2017   #2503
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The Pearl River S-201M is a much rare camera than the above MINGCA S-201M. The 58/2 normal lens also has lanthanum elements.

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Old 01-04-2017   #2504
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A rare production gold-plated Pearl River S-201. Never used.




Last edited by zhang xk : 03-04-2017 at 18:43. Reason: added animage
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Old 01-04-2017   #2505
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Seagull DF-7, after the rare Shanghai DF-7. Not a common camera to find.

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Old 01-04-2017   #2506
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Black version Pearl River S-201 with a waist level finder. The most common S-201 cameras.

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Old 01-22-2017   #2507
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Those Chinese SLRs are cooool
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Old 01-22-2017   #2508
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F4 SLR by Narsuitus, on Flickr
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Old 01-23-2017   #2509
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What are lanthanum elements?
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Old 01-23-2017   #2510
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Quote:
Originally Posted by kshapero View Post
What are lanthanum elements?
I'm assuming this refers to the older "radioactive" lenses, where they added some rare earth compounds only to have the glass elements yellow with age.

I'm sure most of you have seen this method to "fix" the problem.

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Old 01-23-2017   #2511
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Quote:
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I'm assuming this refers to the older "radioactive" lenses, where they added some rare earth compounds only to have the glass elements yellow with age.

I'm sure most of you have seen this method to "fix" the problem.

Well, if it turns yellow, then I won't need a yellow filter for b/w wont I?
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Old 01-23-2017   #2512
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Quote:
Originally Posted by kshapero View Post
What are lanthanum elements?
Hi,

From memory they added Lanthanum Oxide to the glass to improve it a lot. Look it up using a search engine and you'll frighten yourself and re-assure yourself alternatively. From memory, again - so worry - Thorium Oxide was the one to worry about.

It's one of those great leaps forward that several people in different countries discovered, like lens coating.

Regards, David
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Old 01-25-2017   #2513
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Radioactive lenses are safe. I gave one Takumar 50 f/1.4 to one of my friends, physicist in a well know Scottish University to measure it and review it. He concluded that it was safe to use and that the metal camera backs are usually thick enough to stop the radiation from reaching your head or eyes.

I remember reading somewhere that what was a risk to health and safety, were the viewfinder eyepieces in certain cameras that contained thorium. Due to them being very close to the eye, they could pose a risk.
Oddly enough, i never found out which cameras had thorium based eye pieces...
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Old 01-25-2017   #2514
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Thought I'd feed my last roll of APX 100 to my Contax D. Little slow in use but rather elegant.

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Old 01-28-2017   #2516
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Canon EOS 6D - my newest camera

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Old 02-16-2017   #2518
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I would have put this in the Coffee & Camera thread but the cup is empty.

Bessaflex TM with Zeiss Distagon T* 35mm f2 ZS lens (M42 mount)

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Old 02-17-2017   #2519
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My F and my father's FM

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Old 02-21-2017   #2520
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I've got the same lens on my F presently

Nikon F with 2.8cm f/3.5 by Abram Goglanian, on Flickr
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