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07-14-2022, 03:22 PM - 1 Like   #16
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QuoteOriginally posted by The Squirrel Mafia Quote
I was under the impression that the K-S1/S2 was using the same sensor that was beong used in the Sony a58. I coild be wrong, though.
There's conflicting information on the size of the sensor online, and the only actual Sony page that I found, that has the specifications is this one, I think from Indonesia: SLT-A58 Specifications | Sony IN

It states that the sensor is 23.2 x 15.4mm, which matches what I've seen from the A3000/A5000, and different from Samsung and Pentax...

07-14-2022, 07:12 PM   #17
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This says it is a Sony. https://www.ephotozine.com/article/pentax-k-s2-dslr-review-27269
07-14-2022, 08:06 PM - 2 Likes   #18
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It doesn't matter who made the sensors, at the end Pentax put its sauce via its processor, microlenses and lenses. I love all sensors as long they have at least 10mp 😊👍🏼I simply enjoy the experience of using Pentax cameras.
07-14-2022, 09:39 PM   #19
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QuoteOriginally posted by ChristianRock Quote
There's conflicting information on the size of the sensor online, and the only actual Sony page that I found, that has the specifications is this one, I think from Indonesia: SLT-A58 Specifications | Sony IN

It states that the sensor is 23.2 x 15.4mm, which matches what I've seen from the A3000/A5000, and different from Samsung and Pentax...
I think if you did a teardown, that part would be identified as the Sony.

Not only is there rounding of numbers in published specs, but each company doing its order does customize to one extent or another ... will all the pixels be used? (could be different for something with a moving sensor). Will there be a microlens layer on top, or something other than a Bayer filter, or does the aliasing filter stay or get removed? What's the gain structure for the DAC/amplifier (the original K-1 is very ISO invariant)?

The Fuji XT and Pentax X-3 III obviously have 26Mp cut from the same wafer underneath but the little mods mean perhaps we shouldn't call them the same sensor.

07-15-2022, 05:11 AM - 1 Like   #20
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QuoteOriginally posted by clackers Quote
I think if you did a teardown, that part would be identified as the Sony.
That is why I was hoping someone like @photogem would chime in. He's opened dozens of these cameras and if anyone would know that fact for sure I think it would be him...
07-17-2022, 02:28 AM - 1 Like   #21
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QuoteOriginally posted by ChristianRock Quote
That is why I was hoping someone like @photogem would chime in. He's opened dozens of these cameras and if anyone would know that fact for sure I think it would be him...
I'm afraid no K-S1 or K-S2 was that damaged that I tore them down to get to the sensor or mainboard.
I once had a K-S2 beyond repair (a filed solenoid brought the diaphragm control unit out of alignement and the spring of one of the wheels jumped out) but I was able to sell it for spare parts.

When John Riley from ephotozine writes that it's a Sony sensor, he might have just guessed, similar to the few others who wrote it's a Sony.
The Japanese website doesn't give a glue, but sensor-sizes for the Samsung 20.3 MP Sensor (NX30, NX300) aren't stable, I have found:
23,7 x 15,7mm
23,6 x 15,8mm
23,5 x 15,7mm
but all with ISO 100-25600 so here very different to the specs we have with the K-S1 and K-S2!

In 2018 there were rumors about Ricoh buying/using Samsung-sensors again but this was after the K-S1 and K-S2 (discontinued 2016)

Last edited by photogem; 07-17-2022 at 10:20 PM.
07-18-2022, 02:33 PM - 1 Like   #22
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QuoteOriginally posted by photogem Quote
I'm afraid no K-S1 or K-S2 was that damaged that I tore them down to get to the sensor or mainboard.
I once had a K-S2 beyond repair (a filed solenoid brought the diaphragm control unit out of alignement and the spring of one of the wheels jumped out) but I was able to sell it for spare parts.
Yeah I also had that messed up K-S2 but that was given away for parts a long time ago... it's laying in someone's drawer, without a back screen and lots of internals, so I'd love to find out if it

QuoteQuote:
When John Riley from ephotozine writes that it's a Sony sensor, he might have just guessed, similar to the few others who wrote it's a Sony.
QuoteQuote:
The Japanese website doesn't give a glue, but sensor-sizes for the Samsung 20.3 MP Sensor (NX30, NX300) aren't stable, I have found:
23,7 x 15,7mm
23,6 x 15,8mm
23,5 x 15,7mm
but all with ISO 100-25600 so here very different to the specs we have with the K-S1 and K-S2!
Not so worried about ISO, it seems like every manufacturer gets that bit from their onboard processor. Even Pentax has different ISOs for the same sensor (see K-30 vs K-50, same sensor, but they got a higher ISO from the K-50).

The size shown in most places for the Samsung sensor is 23.5 x 15.7mm. That's quite a lot closer to 23.5 x 15.6mm than 23.2 x 15.4mm... and the pixels also match. And most importantly to me, the look of the pictures is much closer between Pentax and Samsung, than between Pentax and Sony (A3000/A5000/A58).

QuoteQuote:
In 2018 there were rumors about Ricoh buying/using Samsung-sensors again but this was after the K-S1 and K-S2 (discontinued 2016)
I remember this. Now I wish that would have come true! That Samsung sensor was wonderful.

08-04-2022, 08:20 AM   #23
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Korean cameras are overcolored. Pentax K-S1 taking images with less color which is perfect and I love it. And a RAW noise is fantastic. Worst at all are Panasonic cameras {in same prices in the same time up to 2018}. K-S1 beating also with low noise EOS...you can compare here: Studio shot comparison: Digital Photography Review
You will be surprise as I was...
08-04-2022, 02:21 PM   #24
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QuoteOriginally posted by Michael Jaros Quote
Korean cameras are overcolored. Pentax K-S1 taking images with less color which is perfect and I love it. And a RAW noise is fantastic. Worst at all are Panasonic cameras {in same prices in the same time up to 2018}. K-S1 beating also with low noise EOS...you can compare here: Studio shot comparison: Digital Photography Review
You will be surprise as I was...
You mean the surprise is the lack of the K-S1?
08-08-2022, 07:43 AM   #25
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Yes, for example yes.
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