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2024-08-15

Staeble-Kata E 45/2.8 and Staeble-Telexon E 85/5.6: Lens cap replacement

The Staeble-Kata E 45/2.8 and the Staeble-Telexon E 85/5.6 not only look similar, but also use the same size caps.

I already have experience with universal caps, so this time I bought other ones: FH-34/F34 (34mm inner diameter).




The caps fit both Staeble-Kata and Staeble-Telexon lenses.



2024-08-14

Jeep Cherokee KJ: OEM front ABS sensor and Iljin hub

After reading DTCs from the ABS control module on my Jeep Cherokee KJ, I found that the front right ABS sensor has failed. I decided to replace it with a used OEM ABS sensor.

Overall, it is a fairly simple job. But there were some tasks to solve.

1. Both Iljin ABS sensors are mounted with pentagon bolts (instead of the usual hex bolts):




To remove the bolt, I used a T30 Torx bit.




To mount a sensor after that, I used the OEM hex bolt (with H5 hex head).


2.  An ABS sensor was stuck. It was difficult to remove. And I broke its plastic body:




To remove the broken remaining part, I used a screw. Sometimes it is better to heat a screw before screwing it into the plastic fragment to be extracted.



The plastic fragment was completely removed with pliers.
 

Since I added this ABS control module support to SZ Viewer, it was nice to check the OEM sensor right away.

The sensor obviously reacts to metal:




But when I mounted the sensor and tried to drive, there was no data from the sensor:




At least the C1015 DTC was gone. This means that the ABS sensor circuit is fine.

Later I found claims that the OEM front sensors (52128694AF and 52128695AF) don't work with the Iljin front hubs (IJ123040, IJ123093) because of the different body shape of the sensors! This seems to be true.

Of course it is impossible to find Iljin sensors as dedicated parts. Looks like I have to replace the front right hub assembly. Once again (after about 80000 km).



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2024-08-13

Pentax M 200/4: Samples [2] - FF - f/4

Photos taken with the Sony a7c (FF, 24MP) and the Pentax M 200/4 at f/4.










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2024-08-11

APS-C vs Micro 4/3: FOV

Two digital cameras: the Samsung NX2000 (APS-C, crop factor 1.5x) and the Olympus E-PL1 (Micro 4/3, crop factor 2x).

Using the same lens, the Olympus E-PL1 has a smaller field of view. I took a picture with the Samsung NX2000 (and the Pentax K 35/3.5) and drew the boundaries of the field of view of the Olympus E-PL1:




Note that the aspect ratio is different: 3:2 on the NX2000 and 4:3 on the E-PL1.

Also a fun fact, the E-PL1 has fewer pixels (12MP vs 20MP), the sensor size is also smaller. And these two cameras have very close pixel densities of about 230 pixels per mm (~5900 ppi, for the FF sensor it would be about 46MP) . So it makes sense to compare their resolutions with the same lens.

2024-08-09

Jeep Cherokee KJ: ABS control module and SZ Viewer

It is possible to connect to the ABS control module of my Jeep Cherokee KJ with CASCADE (see 1, 2, and 3). But I wanted to use my SZ Viewer application. So I added this module support to SZ Viewer.

SZ Viewer can read DTCs (the main objective):




And some values (for 52129438AC):




This SZ Viewer edition is for my personal use only (SZ Viewer is of course aimed at Suzuki). Maybe in a next update this support will be kept.

2024-08-08

Angarsk: Set of 10 photo cards from around 1966 (incomplete)

A rare set of Angarsk photos from around 1966 (or later): 10 photos. Unfortunately I don't have 4 photos from this set.

And there are also my photos of the same places (August 2024).

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

1. Горсовет. Gorsovet/The city council

No photo


2. Дворец культуры. A palace of culture.

No photo


3. Площадь им. Ленина. The Lenin square.

No photo


4. Кинотеатр "Победа". The "Победа" (Pobeda/Victory) movie theater.




There is a movie poster:




I think it is the movie "Необыкновенный класс": Neobycejná trída/An Unusual Class (Czechoslovakia, 1964/1965). The movie was released in the USSR in 1966. So these photos are from 1966 or later.




5. Детский мир. A "Children's world" shop.




6. Дом спорта. A sports house.




7. Главпочтамт. The main post office.

No photo


8. Телеателье. A TV repair shop.




A very similar photo was in another set.


9. Плавательный бассейн. A swimming pool.




10. Проспект им. Ленина. Lenin Avenue.






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2024-08-07

29x2.1 wheels: First puncture

Just a after few days after mounting new 29x2.1 wheels I got a flat rear tire.




A small piece of glass punctured the tire and tube.

Maybe this is just a coincidence. But now I pay more attention to tires and try not to ride over glass and other dangerous objects on the road.

And I went years without a flat on WTB 27.5x2.8 and 27.5x3.0 tires.



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2024-08-06

Accuracy of light meter apps [Android, Nokia 5.3]

I have noticed that light meter apps on my Nokia 5.3 phone display incorrect exposure values.

For example, Light Meter by Luminis Labs (I like the simplicity of this app).

Sunny day, no clouds in the sky, outdoors. The Sunny 16 rule in action: I set ISO 100 and f/16.




I was expecting a shutter speed of 1/100 (or even faster). But the app showed a much slower 1/20. That is at least +2EV overexposure.

Maybe the main camera is reporting wrong values. Maybe the real sensitivity is much lower than stated.

Maybe a negative film allows such overexposure, but I want to control the degree of overexposure myself.

So, after the disappointment, I decide to use a good old dedicated light meter. A model without a digital display, with only a dial you should turn and then choose a pair of the aperture and the shutter speed. And the model should be powered by a cheap modern battery.



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2024-08-05

Auto-Takumar 105/2.8: Samples [1] - FF - f/2.8

Photos taken with the Sony a7c (FF, 24MP) and the Auto-Takumar 105/2.8 at f/2.8.











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2024-08-04

Uvex Pheos One (9192370): After one year

The Uvex Pheos One (9192370) safety glasses are cheap and their quality is not so good. There is some film coating on the inside of the lenses. And after one year, this coating started to peel off.




Then the coating came off even more after just washing with water. So I removed the coating completely.

As far as I understand, the coating is not an anti-reflective coating. It looks like an anti-fog coating. The glasses can still be used in the summer. Anyway, I have another pair.



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2024-08-03

Angarsk, abandoned tram tracks (August 2005)

Angarsk, abandoned tram tracks, August 2005. Later these tracks were completely removed.




Pentax *ist Ds (1.5x crop factor, 6MP) + unknown manual focus lens



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2024-08-02

Pentax DA 14/2.8: Samples [2] - APS-C

Photos taken with the Pentax *ist Ds (1.5x crop factor, 6MP), the Pentax K10D (1.5x crop factor, 10MP), and the Pentax DA 14/2.8 at f/8-11. The profiled lens (distortion/vignetting) correction is disabled.

I like the Pentax sunstars.

(Pentax *ist Ds, f/11)

(Pentax K10D, f/9)

(Pentax *ist Ds, f/8)

(Pentax K10D, f/8)

(Pentax *ist Ds, f/8)

(Pentax K10D, f/9)

(Pentax K10D, f/9)



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2024-08-01

Leica M as universal mount

For the Olympus E-PL1 I bought an adapter for Leica M lenses, although I do not own such lenses. One reason is the very short flange focal distance for a film camera mount. With an additional adapter I can mount almost all my film lenses.





It is possible to mount M39x1 lenses.





It is possible to mount Pentax K lenses.


There are two options to mount M42x1 lenses:

3. Using a Pentax K - Leica M adapter and an M42x1 - Pentax K adapter:




4. Using an M39x1 - Leica M adapter and an M42x1 - M39x1 adapter:




5. Some lens mounts can also be used with appropriate adapters for an M39x1 - Leica M adapter.

6. I could also use a Nikon F - Leica M adapter, but I only have one lens with this mount, so I don't really need it.

2024-07-31

"Pay to not update"

This is a way to monetize free software.

Free copies of software receive updates for free. These automatic updates are first in line, with no way to revert to an earlier version. The software soon stops working if it is not the latest version.

Meanwhile, paid copies of the software install updates last in line, or update installation can be turned off. It is also possible to revert to a previous version.

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