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2025-10-03

Angarsk: 7 views from 1956 (and 2025)

This is a small postcard titled "Виды Ангарска" (Views of Angarsk, 7 photos) from 1956. Also, see the postcard (11 photos) and the postcard (10 photos) from 1956.




The views themselves are tiny, about the size of a postage stamp, so the resolution is low.

I've also included similar views that I took in September 2025.

Disclaimer: My photographs are nothing more than a documentation of reality.

1.




2. Дворец культуры (a palace of culture).
.




3. Проспект Ленина (Lenin avenue).





4. Гостиница "Саяны" (Sayan hotel).





5. Иркутский техникум жидкого топлива (Irkutsk liquid fuel technical college); кинотеатр "Победа" (Pobeda/Victory сinema).





6. Улица Олега Кошевого (Oleg Koshevoy street).





7. Центральный проспект (Central avenue).






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Posted by malykh в 10:10 0 comments

2025-10-01

Shimano Deore XT BB-MT801

This is a Shimano Deore XT BB-MT801 (BSA Hollowtech II) bottom bracket.




It comes with three 2.5mm spacers. Note that one spacer must be installed on the right side anyway (68/73).




As far as I understand, the 2.5 mm place was originally intended for mounting specific types of front derailleurs. If you are using a different type of front derailleur, or none at all, the space must be filled with a spacer.



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Posted by malykh в 18:11 0 comments

2025-09-29

Staeble-Telexon E 85/5.6: Samples [3] - 135 film - f/5.6

Camera: Zenit-3M (with some limitations)
Film: Ilford Pan ISO 100 (135 B&W)

Since I don't have a Paxette camera, I tested the lens using a Zenit-3M instead. Unfortunately, this combination doesn't allow for focusing on distant objects.








Posted by malykh в 10:12 0 comments

2025-09-27

Audiotrak Prodigy Cube: Op-AMPs

These are the operational amplifiers (DIP8) for the Audiotrak Prodigy Cube:





Posted by malykh в 18:37 0 comments

2025-09-25

Angarsk Construction Department: 25th anniversary medal





The medal features an artistic rendering. It is inspired by a real-world fountain (see also).



Posted by malykh в 19:57 0 comments

2025-09-23

Pentax Q 01 8.5/1.9 Standard Prime

The Pentax Q 01 8.5/1.9 Standard Prime is the only AF prime lens for the Q series. I prefer prime lenses to zoom lenses, so I searched for this one. Fortunately, this (used) lens is neither too rare nor too expensive.




On the Pentax Q (1/2.3"), it is equivalent to a 47mm lens - a true standard lens. The f/1.9 aperture makes it the fastest lens in the Q series.

It is quite small, especially compared to the Pentax Q 02 Standard Zoom.




The filter thread is the 40.5x0.5 (like old lenses, not modern ones).




The lens has 8 elements in 5 groups. 




Like all AF Pentax Q lenses, it has a built-in leaf shutter, with speeds up to 1/2000. This is typical of a leaf shutter, but the speed is too slow for sunny weather. To address this, the lens has a built-in ND4 filter that can be controlled via the camera settings. Alternatively, you can switch to the electronic shutter.

The aperture (the leaf shutter) has 5 blades.



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Posted by malykh в 19:41 0 comments

2025-09-21

Kenko Soft 45/4.5: Samples [1] - FF - f/4.5

Camera: Sony a7c (FF, 24MP)
Lens: Kenko Soft 45/4.5 at f/4.5

It seemed to me that the lens likes sunny weather very much.










See also related notes:
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Posted by malykh в 16:14 0 comments

2025-09-19

Pentax Q "Unique Lenses"

I now have the entire so-called "Unique Lenses" series for Pentax Q cameras (earlier, I only had three of them).




From left to right:



My rating for how fun they are to use:

1. Pentax Q 07 11.5/9 Mount Shield Lens
2. Pentax Q 03 3.2/5.6 Fish-eye
3. Pentax Q 04 6.3/7.1 Toy Lens Wide
4. Pentax Q 05 18/8 Toy Lens Telephoto

But keep in mind that I prefer wide angles to long focal lengths.

Posted by malykh в 22:45 0 comments

2025-09-17

Toopre TL-221 bottom bracket wrench

Here's another bottom bracket wrench: the Toopre TL-221.




Unlike the Meroca wrench, this one is compatible with five types of bottom brackets.

FSA-386 (48.5-49.3/16), DUB16T (46/24), BB-9100 (39/16):



44MM (44/16), BBR-60 (40.5-41/16):




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Posted by malykh в 08:39 0 comments

2025-09-15

Kenko Soft 45/4.5: M42 adapter

The Kenko Soft 45/4.5 lens has a so-called P-mount. This simple mount has an M42x1 thread, and the flange focal distance is 55 mm. 

My lens did not come with an adapter. So, I had to find a suitable one. Initially, I planned to combine two adapters, a T2-M42 and an M42-NEX, to create a hybrid adapter. Unfortunately, the parts turned out to be incompatible.

A simpler solution is to use an M42x1 extension tube. The difference in flange focal distance is 9.5 mm (55-45.5). Of course, a shorter tube can be used, but that affects the minimum focusing distance (and focusing will be above the infinity).

I found a 9mm M42x1 extension tube and added a 0.5mm shim.




It works well.




There are two drawbacks. First, the scales of the lens are oriented incorrectly in this case. Second, the outer diameter of the extension tube is small, so it's impossible to hold the tube to screw the lens in and out. Holding the lens to screw it in and out is also inconvenient due to the aperture and focusing rings.

Posted by malykh в 19:30 0 comments

2025-09-13

Mir-26B 45/3.5: Samples [1] - FF - f/3.5

Camera: Sony a7c (FF, 24MP)
Lens: Mir-26B 45/3.5 at f/3.5

The blur of the out-of-focus area is interesting. However, as a 45/3.5 lens, the Mir-26B is heavy and bulky (82mm filter thread!) for an FF camera, let alone one with a smaller sensor.








Posted by malykh в 10:31 0 comments
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