B&W photographic films (2024-06)

135 (35mm) photographic films that I have, all are B&W negative:

From left to right:

Kentmere Pan ISO 100

Kentmere Pan ISO 400

Fomapan Classic ISO 100 

Ilford Pan F Plus ISO 50

Ilford Pan ISO 100

Image albums:

• Photographic film

Koozer XM1850 (622x27) wheelset

And this is the third step to 29x2.1 wheels for my Cannondale Cujo 1 (after tubes and tires).

Koozer XM1850 (622x27) wheelset, ready to mount.

My configuration:

Front hub (XM460): 15x110 Boost

Rear hub (XM460): 141 QR Boost (with caps and axle included)

Cassette splines: [Shimano] HG

Brake rotor mount: 6-bolt

Spokes: 32 per wheel

Strange rear hub design: the freehub body (with splines for a cassette) is mounted on the hub without any fasteners, so it can easily be removed by hand.

And not so easy to reinstall (I did it with a thin wire). Be careful when removing the rear wheel from a bike.

See also related notes:

• Cannondale Cujo 1: 29x2.1 wheels mounted (2024-07-13)

Image albums:

• Bicycle

Staeble-Kata E 45/2.8: Samples [1] - FF - f/2.8

Photos taken with the Sony a7c (FF, 24MP) and the Staeble-Kata E 45/2.8 at f/2.8.

See also related notes:

• Staeble-Kata E 45/2.8 (M39x1/44): Standard triplet for Braun Super Paxette II (2024-06-24)

Image albums:

• Staeble-Kata E 45/2.8

My lenses by mount (2024-06)

In 2023 I showed my lenses (grouped by focal length). But since then I sold some of them and bought some new ones. Here is the list, lenses grouped by mount.

    SLR lenses:

Pentax K

Pentax K 28/3.5

Pentax K 30/2.8

Mosler Photoguard 35/2.8 [T]

Pentax K 35/3.5

Pentax K 50/1.4

Pentax M 50/4 Macro

Pentax K 55/1.8

Riconar 55/2.2

Pentax M 100/4 Macro

Pentax M 135/3.5

Pentax M 200/4

Five star 500/8 [T]

Pentax K, AF

Pentax-DA L 18-55/3.5-5.6

M39x1/45.2

Industar-50 50/3.5

M40x1/44

Victar Anastigmat 50/2.9

Carl Zeiss Jena Tessar 50/3.5

M42x1/45.5

Meyer-Optik Helioplan 40/4.5

ISCO-Göttingen Iscovitar 50/2.8

Industar-50-2 50/3.5

Takumar 105/2.8 (II)

Auto-Takumar 105/2.8

Nikon F

Mitakon 85/2 (II)

    Rangefinder lenses:

M39x1/28.8

Industar-26M 50/2.8 - two copies

Industar-50 50/3.5

M39x1/44

Staeble-Lineogon 35/3.5

Staeble-Werk Choro R 35/4.5

Steable-Kata E 45/2.8

Steinheil Quinon 50/2

Staeble-Telexon E 85/5.6

Staeble-Telexon 135/3.8

    Mirrorless lenses:

Sony FE

Risespray 11/2.8 Fisheye

Cheecar 35/1.4

OEM/Vlogmagic 50/1.1

Sony FE, AF

Samyang AF 35/2.8 FE

Samsung NX, AF

Samsung NX 20/2.8

Samsung NX 30/2

M4/3, AF

Olympus 14-42/3.5-5.6

See also related notes:

• Viltrox AF 20/2.8 (FE): Ultra wide angle autofocus lens (2024-08-31)
• Leica M as universal mount (2024-08-01)

Shimano RD-M8000-GS adjustment screws

The adjustment screws/bolts of the Shimano RD-M8000-GS (11-speed Deore XT) rear derailleur:

H (High speed) - smallest cog/sprocket side limiter

L (Low speed) - largest cog/sprocket side limiter

B (B-tension) - so-called "end" screw/bolt

The hex size is 2mm.

Be careful not to confuse the B screw/bolt with the H screw/bolt. This rear derailleur has an unusual placement of them.

See also related notes:

• Cannondale Cujo 1: 29x2.1 wheels mounted (2024-07-13)

Image albums:

• Bicycle

Pentax K 50/1.4: Samples [2] - APS-C - f/1.4

Photos taken with the Pentax K-m (1.5x crop factor, 10MP), the Samsung NX300 (1.5x crop factor, 20MP), and the Pentax K 50/1.4 at f/1.4.

(Pentax K-m)

(Pentax K-m)

(Pentax K-m)

(Pentax K-m)

(Pentax K-m)

(Pentax K-m)

(Samsung NX300)

Image albums:

• Pentax K 50/1.4

Staeble-Kata E 45/2.8 (M39x1/44): Standard triplet for Braun Super Paxette II

Yet another triplet lens and yet another lens for a Braun [Super] Paxette II, with the M39x1/44 mount: the Staeble-Kate E 1:2,8/45.

Most likely the lens has 3 elements in 3 groups. Something like a Cooke triplet:

This lens was a standard lens for Braun Super Paxette II cameras. The letter -E- in the name (as in the Staeble-Telexon E 85/5.6) indicates support for coupled rangefinder present on Super Paxette II cameras, not just Paxette II. There was also an earlier R version (without rangefinder coupling) of the Kata 45/2.8.

The lens is fast (f/2.8) for a triplet.

The aperture has 10 blades:

The aperture ring has click stops at f/2.8, f/4, f/5.6, f/8, f/11, f/16.

The minimum focusing distance is about 1m.

The front part of the lens (with the filter thread) rotates during focusing and aperture changing.

I like triplet lenses, and the Kata is my fourth triplet lens (and second for a Braun [Super] Paxette II after the Staeble-Werk Choro R 35/4.5).

See also related notes:

• My triplet lenses (2024-08) (2024-08-27)
• Staeble-Kata E 45/2.8 and Staeble-Telexon E 85/5.6: Lens cap replacement (2024-08-15)
• Staeble-Kata E 45/2.8 and Staeble-Telexon E 85/5.6 (2024-07-11)
• Staeble-Kata E 45/2.8: Samples [1] - FF - f/2.8 (2024-06-28)

Image albums:

• ISCO-Göttingen Iscovitar 50/2.8
• Staeble-Werk Choro R 35/4.5
• Staeble-Kata E 45/2.8
• Victar 50/2.9

Kenda Small Block Eight 29x2.1 tires

This is the second step to 29x2.1 wheels for my Cannondale Cujo 1 (after inner tubes).

Kenda Small Block Eight 29x2.1 (54-622) K1047 tires, folding bead. A specialty of this product for the Chinese market is 60 TPI (instead of 120 TPI).

I know this model (in 26x2.1 size). And I liked it overall. When I started thinking about 29" wheels, this was one of the tire candidates.

It is claimed that the weight range is 568-628g. But my tires weigh 641g and 651g. Both without packaging.

See also related notes:

• Kenda Small Block Eight 27.5x2.1 tires (2025-07-31)
• 29x2.1 wheels: First puncture (2024-08-07)
• Cannondale Cujo 1: 29x2.1 wheels mounted (2024-07-13)
• Koozer XM1850 (622x27) wheelset (2024-06-29)

Image albums:

• Bicycle

Samyang AF 35/2.8 FE: Samples [1] - FF - f/2.8

Photos taken with the Sony a7c (FF, 24MP) and the Samyang 35/2.8 FE at f/2.8. The profiled lens (distortion/vignetting) correction is disabled.

It is the only Sony FE autofocus lens I own now. I am used to focusing manually. The main advantage of the Samyang is that it is electronically linked to the camera, so the lens model and aperture are automatically in EXIF.

See also related notes:

• Samyang AF 35/2.8 FE: My first AF lens for Sony (2023-09-08)

Image albums:

• Samyang AF 35/2.8 FE

Pentax M 50/4 Macro + 26mm extension tube

My main purpose for the 26mm extension tube is to use it with the Pentax M 50/4 Macro.

This is a combination of the Pentax M 50/4 Macro lens + the 26mm Pentax K extension tube + the Pentax K-Sony FE adapter.

Without an extension tube, the Pentax M 50/2 Macro has a maximum magnification of 0.5x (1:2). With the 26mm extension tube, the magnification ranges from 0.5x (1:2) to 1x (1:1) depending on the rotation of the focus ring. This is sufficient for my tasks.

At f/8, the depth of field is quite shallow:

(Lilac/Syringa)

See also related notes:

• JJC FDA-S1: Digitizing 135 film (2024-07-22)

Image albums:

• Lens accessories
• Pentax M 50/4 Macro

Pentax 17: Brand new half-frame film camera

Ricoh has announced the Pentax 17, a half-frame film camera. So unexpected for 2024!

(source)

The camera uses standard 135 (35mm) film, but the frame size is 17x24mm instead of 36x24mm:

(source)

And the frame has a vertical (portrait) orientation by default.

(source)

The Pentax camera is called 17 because the frame size is 17mm. The frame diagonal is about 29mm, so the crop factor is about 1.5x.

The lens is a fixed prime 25mm f/3.5 (37mm f/5 equivalent). The lens has 3 elements in 3 groups (a triplet). The aperture (f/3.5-f/16) has 9 blades. The filter thread size is 40.5mm (classic for small lenses).

The lens has only manual focus with coarse (6 zones) scale: 0.24-0.26m, 0.47-0.54m, 1-1.4m, 1.4-2.2m, 2.1-5.3m, 5.1m-∞.

(source)

The viewfinder is vertical, as expected.

(source)

The film is manually advanced and rewound, and I like that.

(source)

The electronics control the shutter, automatic exposure, a flash, and the movement of the optical elements (according to the manual focus). However, the ISO value is set manually (50-3200), allowing the use of film cassettes without a DX code. This is important today.

A CR2 non-rechargeable battery is used.

(source)

I would prefer something cheaper, but the flash uses a lot of power.

The fastest shutter speed is 1/350. At f/3.5 it is too slow for outdoor use. Manual scale focusing implies a closed aperture.

As far as I know, there is no aperture priority mode where you can choose an aperture. However, you can use the "Bokeh" mode, which tries to use the widest suitable aperture. Anyway, no aperture is displayed anywhere.

Image albums:

• Pentax 17

Industar-26M 50/2.8: Samples [1] - FF - f/2.8

Photos taken with the Sony a7c (FF, 24MP) and the Industar-26M 50/2.8 at f/2.8.

The front optical element of the lens is chipped. So there is a lot of flare in some conditions.

See also related notes:

• Lenses from USSR (2024) (2024-06-08)

Image albums:

• Industar-26M 50/2.8

Vivitar V3800N: Film memo holder

This is a box of photographic film.

You can cut off part of the box:

And insert it into a square window on the back of the Vivitar V3800N (to remember ISO and the number of frames):

This window is a film memo holder for a part of a box or for some other memo information.

Warning: A memo can only be inserted or removed when the back is open. When the back is closed, the eyepiece blocks access to the memo.

See also related notes:

• Vivitar V3800N: Film SLR camera with Pentax K mount (2024-04-20)

Image albums:

• Photographic film
• Vivitar V3800N