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10-21-2014, 08:31 AM   #1
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Ricoh lens patent and new q sensor?

Via photo rumors Ricoh lens patent for a new 8.17mm f/1.4 lens for a 2/3 sensor. Could the next q have a 2/3 sensor? Possibly from Fuji?

with the link: http://photorumors.com/2014/10/20/the-latest-patents-from-canon-panasonic-tamron-and-ricoh/


Last edited by Belnan; 10-21-2014 at 08:36 AM. Reason: added link
10-21-2014, 08:53 AM   #2
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Well that is a large sensor: 8,8x6,6mm versus 7,6x5,7mm That is 1/3th bigger. I wonder if that still works with all lenses and still havinf SR.

Image sensor format - Wikipedia, the free encyclopedia
10-21-2014, 09:00 AM   #3
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I really wish those sensor dimensions would just be expressed as mm instead of fractions of inches.. but nvm that now.
That would be much bigger, does the Q mount (radius and register distance) even allow that?
But an f1.4 lens for the Q would be great. The Q lineup could use some really bright lenses.

QuoteOriginally posted by RonHendriks1966 Quote
I wonder if that still works with all lenses and still havinf SR.
Well the latest Q already has a crop mode for the older lenses.
10-21-2014, 09:00 AM - 2 Likes   #4
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Ah, I think I'm starting to understand Ricoh's FF strategy. They are going to sneak up on it with the Q while the K series stands around, whistles, and looks innocent. BOOM! Won't everyone be surprised?

10-21-2014, 09:24 AM   #5
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A 3.93 crop factor...

The 8.17 f/1.4 would be equivalent to 32mm or so, the 35mm f/1.4 would be ~138mm.

Assuming the older lenses would give us full coverage, we'd have a

~33.4mm prime with the 01 (perhaps this is why the 01 seems to have disappeared as an available kit lens?)
~19.7 - 59 mm kit lens with the 02
~12.6mm with the 03
~24.8mm with the 04
~70.7mm with the 05
~59 - 176.9mm with the 06
~45.2mm with the 07
~14.9 - 23.2mm with the 08

and somewhere, the macro that's been hanging around as a concept for a while.
10-21-2014, 10:21 AM   #6
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QuoteOriginally posted by Na Horuk Quote
I really wish those sensor dimensions would just be expressed as mm instead of fractions of inches
The fractions of inches have nothing to do with the dimensions (in any way you can make sense of) -- they are essentially meaningless...
10-21-2014, 10:47 AM   #7
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QuoteOriginally posted by Na Horuk Quote
I really wish those sensor dimensions would just be expressed as mm instead of fractions of inches.. but nvm that now.
That would be much bigger, does the Q mount (radius and register distance) even allow that?
But an f1.4 lens for the Q would be great. The Q lineup could use some really bright lenses.



Well the latest Q already has a crop mode for the older lenses.
Really? Could you give us any link or info from manual? Please...
10-21-2014, 11:00 AM   #8
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QuoteOriginally posted by vonBaloney Quote
(in any way you can make sense of)
It's the length of the diagonal - but that's only useful if you also know the aspect ratio of the sensor. I suppose it made more sense when it was the diameter of the vidicon tube - or maybe if you convert to the FFF (Furlong/Firkin/Fortnight) system.

10-21-2014, 11:21 AM   #9
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Fuji uses Sony sensors for their P&S now.
10-21-2014, 11:25 AM   #10
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QuoteOriginally posted by RonHendriks1966 Quote
Well that is a large sensor: 8,8x6,6mm versus 7,6x5,7mm That is 1/3th bigger. I wonder if that still works with all lenses and still havinf SR.

Image sensor format - Wikipedia, the free encyclopedia
It's not that bigger. The Q sensor is 1/1.7" and 2/3" is also 1/1.5". And 8.8 7.6 = 6.6 5.7 = less than 16% bigger.

But probably enough for the current lenses to show heavy vignetting.

The Q mount and its connectors could accommodate a 1" sensor (just).
10-21-2014, 11:28 AM   #11
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QuoteOriginally posted by THoog Quote
It's the length of the diagonal - but that's only useful if you also know the aspect ratio of the sensor. I suppose it made more sense when it was the diameter of the vidicon tube - or maybe if you convert to the FFF (Furlong/Firkin/Fortnight) system.
It is not the length of the diagonal. The diagonal of a 2/3 sensor is 11mm. 2/3" is about 17 mm...actually I think it gives you the diagonal if you take 2/3rds of that (which is 11mm).
10-21-2014, 11:33 AM   #12
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QuoteOriginally posted by vonBaloney Quote
It is not the length of the diagonal. The diagonal of a 2/3 sensor is 11mm. 2/3" is about 17 mm...
It's the length of the outer diagonal (glass envelope) of a video tube that would produce an image of the same size as said sensor.

In short, pure marketing inflated figures (roughly, by a 1.5 multiplicator) but, even inflated, they are coherent among themselves: 1/2.3" - 1/1.7" - 2/3" - 1" - 4/3" (4/3).
10-21-2014, 11:51 AM   #13
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QuoteOriginally posted by Mistral75 Quote
It's not that bigger. The Q sensor is 1/1.7" and 2/3" is also 1/1.5". And 8.8 7.6 = 6.6 5.7 = less than 16% bigger.
Less than 16% bigger in length and width - to get how much larger the area of the 2/3" sensor is over the 1/1.7" sensor you can multiply the ratios of the dimensions: (8.8/7.6) * (6.6/5.7) = 1.34; 34% more area. A third is correct.
10-21-2014, 11:54 AM   #14
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QuoteOriginally posted by goodnight Quote
Less than 16% bigger in length and width - to get how much larger the area of the 2/3" sensor is over the 1/1.7" sensor you can multiply the ratios of the dimensions: (8.8/7.6) * (6.6/5.7) = 1.34; 34% more area. A third is correct.
Indeed, but for the image circle it's the diameter that matters and it's +16%.

And that's the point when the question is:
QuoteOriginally posted by RonHendriks1966 Quote
Well that is a large sensor: 8,8x6,6mm versus 7,6x5,7mm That is 1/3th bigger. I wonder if that still works with all lenses and still having SR.
10-21-2014, 12:29 PM   #15
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How many lens patents never see the light of day.

No reason that lenses designed for a 2/3 sensor wouldnt work on 1/1.7 inch sensor though. The q system would definitely benefit from some fast lenses too.
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