Hi, Y'all-
I don't know about this.
The original question was whether a 16mp full frame sensor would produce a
sharper or less sharp image than a 16mp m4/3 sensor. If the focal lengths, etc.
of the lenses are kept constant, and if the image circle of the lenses were
only slightly larger than the sensor size, then I would think that it would be
a wash. Each lens would funnel the same number of photons down to each pixel.
The full frame lens would funnel them down to a slightly wider area, but they
would be caught by a slightly wider pixel.
In this case it would come down to the quality of each lens.
Thanks,
Steve Goss
-----Original Message-----
From: olympus [mailto:olympus-bounces+sgoss=cerner.com@xxxxxxxxxxxxxxxxx] On
Behalf Of Frank
Sent: Friday, October 20, 2017 3:26 AM
To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
Subject: Re: [OM] Sharpness
In theory I'd say yes, based on the idea that sharpness in the end is about
contrast (the difference between one pixel and the adjacent), and since a FF
pixel would gather more light, it will have higher 'dynamic range', so with the
ability to process more contrast it should get you more sharpness.
However:
- When the dynamic range of the part of the scene which you want/ expect sharp
is adequate for the smaller sensor, I doubt the sharpness difference is visible
c.q. only measurable.
- With the same f-stop the smaller sensor will always have more DOF. It could
well be that the perceived sharpness of the resulting image is higher. If the
f-stop is two stops faster to compensate for DOF, you'll need a longer exposure
or higher ISO to compensate. Both could have a negative impact on sharpness. A
longer exposure is prone to include more movement, higher ISO reduces dynamic
range and introduces noise. Besides:
- There is no FF camera with comparable IBIS to the OM-D camera's.
Depending on your subject, if not or slow moving a large part of the FF
advantage is regained by this, and with many camera-lens combinations it will
actually be an advantage over FF.
- You will need top-of-the-bill FF lenses to equal sharpness of the M43 primes
at full opening. Most of the OM Zuiko's won't cut it (on topic ;-).
The m43 primes are really quite good (and the pro zooms too) at full opening.
Looking forward to other views on this topic.
2017-10-19 23:17 GMT+02:00 Bob Benson <bob.benson91@xxxxxxxxx>:
> I remain confused about the FF vs. M43 sensor comparisons ... I think
> I understand the some of the issues, e.g., DR, ISO/noise ... but my
> question:
>
> If the two sensors have the same pixel count (e.g., 16 meg) ... and
> all other factors are managed for creating the same image with each
> sensor (e.g., f stop) ... is there a basis for asserting the FF would
> render a sharper image ?
>
> Thanks.
>
> Bob
> --
> _________________________________________________________________
> Options:
> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.
> thomasclausen.net%2Fmailman%2Flistinfo%2Folympus&data=02%7C01%7Csgoss%
> 40cerner.com%7C436c1daae68b453321a508d51794449c%7Cfbc493a80d244454a815
> f4ca58e8c09d%7C0%7C0%7C636440847938155947&sdata=R0qH0CMgEBjRz4mNJL3sm8
> k1t79PWAXt2UyrJivBuQE%3D&reserved=0
> Archives:
> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.
> thomasclausen.net%2Fmailman%2Fprivate%2Folympus%2F&data=02%7C01%7Csgos
> s%40cerner.com%7C436c1daae68b453321a508d51794449c%7Cfbc493a80d244454a8
> 15f4ca58e8c09d%7C0%7C0%7C636440847938155947&sdata=kHPZX8MQ3wVZlkEPNfig
> WcPFDKOVMMagjPn7r%2BJipi4%3D&reserved=0
> Themed Olympus Photo Exhibition:
> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.to
> pe.nl%2F&data=02%7C01%7Csgoss%40cerner.com%7C436c1daae68b453321a508d51
> 794449c%7Cfbc493a80d244454a815f4ca58e8c09d%7C0%7C0%7C63644084793815594
> 7&sdata=%2BclZvFDaKNNZIg56rRm6mlM8S5VDwNHHMMzfZn3h7DY%3D&reserved=0
>
>
--
_________________________________________________________________
Options:
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.thomasclausen.net%2Fmailman%2Flistinfo%2Folympus&data=02%7C01%7Csgoss%40cerner.com%7C436c1daae68b453321a508d51794449c%7Cfbc493a80d244454a815f4ca58e8c09d%7C0%7C0%7C636440847938155947&sdata=R0qH0CMgEBjRz4mNJL3sm8k1t79PWAXt2UyrJivBuQE%3D&reserved=0
Archives:
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.thomasclausen.net%2Fmailman%2Fprivate%2Folympus%2F&data=02%7C01%7Csgoss%40cerner.com%7C436c1daae68b453321a508d51794449c%7Cfbc493a80d244454a815f4ca58e8c09d%7C0%7C0%7C636440847938155947&sdata=kHPZX8MQ3wVZlkEPNfigWcPFDKOVMMagjPn7r%2BJipi4%3D&reserved=0
Themed Olympus Photo Exhibition:
https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.tope.nl%2F&data=02%7C01%7Csgoss%40cerner.com%7C436c1daae68b453321a508d51794449c%7Cfbc493a80d244454a815f4ca58e8c09d%7C0%7C0%7C636440847938155947&sdata=%2BclZvFDaKNNZIg56rRm6mlM8S5VDwNHHMMzfZn3h7DY%3D&reserved=0
CONFIDENTIALITY NOTICE This message and any included attachments are from
Cerner Corporation and are intended only for the addressee. The information
contained in this message is confidential and may constitute inside or
non-public information under international, federal, or state securities laws.
Unauthorized forwarding, printing, copying, distribution, or use of such
information is strictly prohibited and may be unlawful. If you are not the
addressee, please promptly delete this message and notify the sender of the
delivery error by e-mail or you may call Cerner's corporate offices in Kansas
City, Missouri, U.S.A at (+1) (816)221-1024.
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|