The new Olympus E-M1 arrived yesterday. I picked it up on the way to the office
and charged the battery there. My first test of it after I got home from the
office was to stick a lens on it, and drag it out to the club.
With the Panasonic/Leica Summilux-DG 25mm lens, focusing for still snaps
I have no problems getting clear hand-held shots with ASA 400 film at f/2.8,
1/4-1/8 second, EV 3 on the chart you referenced. Without IS.
With my G1, I find quite a number of excellent shots, even of people moving, at
light levels which, according to your chart, is ISO -1. Heck, I have some
On 9/10/13, Godfrey DiGiorgi, discombobulated, unleashed:
(Psst: My new camera is on the way to me now, although I doubt anyone on
the PDML is interested to know that other than a couple of friends.
However, Cotty will gush over it when I carry it to the UK next year. It
is sexy. ];-)
Brute
--
On 09/10/2013, Bill anotherdrunken...@gmail.com wrote:
I just ordered a K3, as well as the battery grip, 35-135 lens, flu-card
and dongle from my local pusher.
I think I need help.
You seem to be managing quite well. Unless you mean that you need
help paying - in which case, I'll see you
Good point. No, I mean like wait a year (or eight months or so) for a real
drop and more used cameras on the market. Buy some used Canon gear until
then.
When it comes to cameras, I've learned to be patient.
Marnie aka Doe -- The Former Pentaxian ;-)
In a message dated 10/9/2013 10:37:40
It seems to me that if you had a rear illuminated sensor, with no space
between the pixels, and it had no bayer filter, then aliasing/moire would
not happen, because the light value would be averaged over the whole sample.
It's the discontinuous aspect of what is effectively three overlayed
Aliasing occurs regardless of how close together the cells are because the
cells are discrete. This kind of aliasing is a function of discrete
mathematics.
G
On Oct 9, 2013, at 9:08 AM, Larry Colen l...@red4est.com wrote:
It seems to me that if you had a rear illuminated sensor, with no
On Wed, Oct 09, 2013 at 09:53:52AM -0700, Godfrey DiGiorgi wrote:
Aliasing occurs regardless of how close together the cells are because the
cells are discrete. This kind of aliasing is a function of discrete
mathematics.
I'm afraid that I left my discrete math textbook at home,
and it has
On Wed, Oct 9, 2013 at 12:53 PM, Godfrey DiGiorgi godd...@me.com wrote:
Aliasing occurs regardless of how close together the cells are because the
cells are discrete. This kind of aliasing is a function of discrete
mathematics.
I think you're dismissing Larry's point too easily. When we
On Oct 9, 2013, at 10:52 AM, Matthew Hunt m...@pobox.com wrote:
It seems to me that if you had a rear illuminated sensor, with no space
between the pixels, and it had no bayer filter, then aliasing/moire would
not happen, because the light value would be averaged over the whole sample.
Larry Colen wrote:
It seems to me that if you had a rear illuminated sensor, with no space
between the pixels, and it had no bayer filter, then aliasing/moire would
not happen, because the light value would be averaged over the whole sample.
It's the discontinuous aspect of what is effectively
On 09/10/2013 1:00 PM, Postmaster wrote:
Larry Colen wrote:
It seems to me that if you had a rear illuminated sensor, with no space
between the pixels, and it had no bayer filter, then aliasing/moire would
not happen, because the light value would be averaged over the whole sample.
It's the
Bill wrote:
On 09/10/2013 1:00 PM, Postmaster wrote:
Larry Colen wrote:
It seems to me that if you had a rear illuminated sensor, with no space
between the pixels, and it had no bayer filter, then aliasing/moire would
not happen, because the light value would be averaged over the whole
On Wed, Oct 09, 2013 at 01:17:06PM -0600, Bill wrote:
On 09/10/2013 1:00 PM, Postmaster wrote:
Larry Colen wrote:
It seems to me that if you had a rear illuminated sensor, with no space
between the pixels, and it had no bayer filter, then aliasing/moire would
not happen, because the light
On Wed, Oct 9, 2013 at 3:17 PM, Bill anotherdrunken...@gmail.com wrote:
I just ordered a K3, as well as the battery grip, 35-135 lens, flu-card and
dongle from my local pusher.
I think I need help.
Bill, please line up a model or two to shoot in early November. I'm
relying on you to report
On Wed, Oct 09, 2013 at 03:00:10PM -0400, Postmaster wrote:
Larry Colen wrote:
It seems to me that if you had a rear illuminated sensor, with no space
between the pixels, and it had no bayer filter, then aliasing/moire would
not happen, because the light value would be averaged over the
On 2013-10-09 16:25, Larry Colen wrote:
Actually, what I think Doug should do is paint his racecar in a bayer filter
of 2mm squares, just to screw with the trackside photographers.
As one of said trackside photographers, I don't think I want to give
anyone else any ideas. :)
--
Doug Lefty
On Wed, Oct 09, 2013 at 04:53:51PM -0400, Doug Franklin wrote:
On 2013-10-09 16:25, Larry Colen wrote:
Actually, what I think Doug should do is paint his racecar in a bayer filter
of 2mm squares, just to screw with the trackside photographers.
As one of said trackside photographers, I
On 2013-10-09 17:04, Larry Colen wrote:
When the halftones get shot
and the results aren't so hot
that's a moire.
Eek! :)
Woo hoo! Next week is Petit le Mans! Flagging a day or two, and
supporting the flaggers and other volunteers for the rest of the event.
When I'm not flagging, I'll
On Wed, Oct 9, 2013 at 3:25 PM, Mark Roberts postmas...@robertstech.com wrote:
It isn't because of the space between pixels, which has no effect on
aliasing.
I disagree; see the references in my email. A high pixel fill factor
acts essentially as a lowpass filter, substantially reducing
On 09/10/2013 2:13 PM, Bruce Walker wrote:
On Wed, Oct 9, 2013 at 3:17 PM, Bill anotherdrunken...@gmail.com wrote:
I just ordered a K3, as well as the battery grip, 35-135 lens, flu-card and
dongle from my local pusher.
I think I need help.
Bill, please line up a model or two to shoot in early
To show the effects of pixel fill factor on aliasing, I coded up a
small simulation. This 1000x1000 starting image:
https://dl.dropboxusercontent.com/u/20239870/Aliasing/micro-auto-focus-test-2.png
(from http://www.komar.org/faq/camera/auto-focus-test/ )
represents the image falling onto a
On Wed, Oct 09, 2013 at 08:16:41PM -0400, Matthew Hunt wrote:
To show the effects of pixel fill factor on aliasing, I coded up a
small simulation. This 1000x1000 starting image:
Awesome!
https://dl.dropboxusercontent.com/u/20239870/Aliasing/micro-auto-focus-test-2.png
(from
On Wed, Oct 9, 2013 at 8:35 PM, Larry Colen l...@red4est.com wrote:
It would be a lot easier to see if you could have each point of your output
be 9x9
pixels, then the resulting image would be the same size as the original
(which is
giving me aliasing on my display BTW).
Fair enough, but
On Wed, Oct 09, 2013 at 08:16:41PM -0400, Matthew Hunt wrote:
To show the effects of pixel fill factor on aliasing, I coded up a
small simulation. This 1000x1000 starting image:
I don't speak python, but to have an output array of the same size, would I
want something like:
def
I'm fairly new to Python, but that looks about right. It might be
possible to avoid the two innermost loops (x9, y9) by assigning
directly to a slice:
outbig[x*9:x*9+9, y*9:y*9+9] = value
Not sure if that works.
There's another shortcut you can use at the beginning:
outbig =
You know, someone asked me the other day because I have been a computer
programmer, if I had ever been a geek. I said no, not really. I think that is
confirmed now.
Marnie aka Doe ;-)
In a message dated 10/9/2013 5:17:39 P.M. Pacific Daylight Time,
m...@pobox.com writes:
To show the
Don't feel bad, Marnie. They're significantly geekier than I am, and that's
saying a lot.
I'd rather be geeky making photographs, however.
(Psst: My new camera is on the way to me now, although I doubt anyone on the
PDML is interested to know that other than a couple of friends. However, Cotty
On Wed, Oct 09, 2013 at 06:49:13PM -0700, Godfrey DiGiorgi wrote:
Don't feel bad, Marnie. They're significantly geekier than I am, and that's
saying a lot.
I'd rather be geeky making photographs, however.
(Psst: My new camera is on the way to me now, although I doubt anyone on the
PDML
Pssst. I am still seriously interested in the Olympus EM-5. BUT... going
to wait until I can get it used.
Marnie aka Doe :-) I don't know, Godfrey, you seem pretty geeky to me.
;-) Re camera: cool.
In a message dated 10/9/2013 6:50:01 P.M. Pacific Daylight Time,
godd...@me.com writes:
Please define low light vs dim light for me. EV values would be useful as a
basis of comparison.
G
On Oct 9, 2013, at 7:02 PM, Larry Colen l...@red4est.com wrote:
... My only complaint with u4/3 has been with their sensor performance in low
light conditions. It seems as if the u4/3 sensors
On Wed, Oct 09, 2013 at 08:03:42PM -0700, Godfrey DiGiorgi wrote:
Please define low light vs dim light for me. EV values would be useful as
a basis of comparison.
I guess I'd say that low light is in the range where it is
challenging to get a clear photo, hand held, even with a K-5.
Looking
On Wed, Oct 09, 2013, eactiv...@aol.com wrote:
Pssst. I am still seriously interested in the Olympus EM-5. BUT... going
to wait until I can get it used.
keh.com currently has them for $695/LN- or $665/EX+ (I'd probably go
ahead and spend the extra $30 for LN- but it really doesn't matter
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