Best apertures 67?

Abbazz · 08-23-2022, 06:00 PM

Originally posted by TDvN57

If Pentax is as smart as they think they are, they'll skip the 645FF and go for the 6x7 digital instead.

Now we talk!!!

Cheers!

Abbazz

**kaseki** · 08-23-2022, 06:28 PM

168 million 5-micron pixels in a 6 x 7 cm array. I wonder if that can be built without stitching using present or near-term technology.

Abbazz · 08-23-2022, 06:34 PM

Originally posted by kaseki

168 million 5-micron pixels in a 6 x 7 cm array. I wonder if that can be built without stitching using present or near-term technology.

Sorry to nitpick but 6x7 is more like 5.6x7cm

Cheers!
Abbazz

**kaseki** · 08-24-2022, 07:17 AM

Originally posted by Abbazz

Sorry to nitpick but 6x7 is more like 5.6x7cm

Cheers!
Abbazz

Thanks. I need to keep the focal plane sizes at hand for these recurring pixel discussions. 157 million 5-micron pixels, or 150 million 5.1-micron pixels.

tuco · 08-24-2022, 07:42 PM - **1 Like**

Originally posted by Abbazz

Sorry to nitpick but 6x7 is more like 5.6x7cm

Cheers!
Abbazz

Even more nitpick is to mention the camera brand/model. A negative from my Pentax 67 measures 55.2mm x 69.5mm (definitely not 70.0mm) and from my Mamiya 7II is 56.0mm x 70.5mm all plus/minus approx 0.1mm with a vernier caliper (+/- 0.005 mm). And I imagine there is variation among the same camera/brand due to manufacturing tolerances.

08-24-2022, 07:42 PM - 1 Like	#20
tuco Pentaxian Join Date: Jul 2009 Location: Pugetopolis Posts: 11,025	Originally posted by Abbazz Sorry to nitpick but 6x7 is more like 5.6x7cm Cheers! Abbazz Even more nitpick is to mention the camera brand/model. A negative from my Pentax 67 measures 55.2mm x 69.5mm (definitely not 70.0mm) and from my Mamiya 7II is 56.0mm x 70.5mm all plus/minus approx 0.1mm with a vernier caliper (+/- 0.005 mm). And I imagine there is variation among the same camera/brand due to manufacturing tolerances. Last edited by tuco; 08-24-2022 at 07:59 PM.

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08-23-2022, 06:00 PM	#16
Abbazz Pentaxian Join Date: Nov 2006 Location: Jakarta Posts: 667	Originally posted by TDvN57 If Pentax is as smart as they think they are, they'll skip the 645FF and go for the 6x7 digital instead. Now we talk!!! Cheers! Abbazz

08-23-2022, 06:28 PM	#17
kaseki Loyal Site Supporter Join Date: Dec 2017 Photos: Gallery \| Albums Posts: 1,138	168 million 5-micron pixels in a 6 x 7 cm array. I wonder if that can be built without stitching using present or near-term technology.

08-23-2022, 06:34 PM	#18
Abbazz Pentaxian Join Date: Nov 2006 Location: Jakarta Posts: 667	Originally posted by kaseki 168 million 5-micron pixels in a 6 x 7 cm array. I wonder if that can be built without stitching using present or near-term technology. Sorry to nitpick but 6x7 is more like 5.6x7cm Cheers! Abbazz

08-24-2022, 07:17 AM	#19
kaseki Loyal Site Supporter Join Date: Dec 2017 Photos: Gallery \| Albums Posts: 1,138	Originally posted by Abbazz Sorry to nitpick but 6x7 is more like 5.6x7cm Cheers! Abbazz Thanks. I need to keep the focal plane sizes at hand for these recurring pixel discussions. 157 million 5-micron pixels, or 150 million 5.1-micron pixels.