Forum: Digital SLR Cameras
August 7th 10, 08:08 AM Posted to rec.photo.digital.slr-systems,rec.photo.digital
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Replies: 14
Views: 969
Back-illumination doesn't seem very effective
On 6-8-2010 23:49, John A. wrote:
Thanks. I think I know which of the two of you to ask which door has
the tiger behind it.
Neither.
One of them sees tigers behind every door.
The other thinks...
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Forum: Digital SLR Cameras
April 11th 09, 08:08 AM Posted to rec.photo.digital.slr-systems
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Replies: 5
Views: 484
prime for pentax
manyBobs wrote:
I looking to upgrade from my kit lens on my Pentax K100D. Something
around 35m -40m or so. The Pentax 43m 1.9 would probably do the trick,
but I'm on a budget. Are there...
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Forum: Digital SLR Cameras
March 9th 08, 10:22 AM Posted to rec.photo.digital.slr-systems,rec.photo.digital,rec.photo.equipment.35mm,alt.photography
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Replies: 61
Views: 2,390
Whatever happened to Pentax?
Doug Jewell wrote:
nospam wrote:
pentax sdm lenses won't work on earlier
cameras, such as the k100d.
They work, they won't autofocus. Which is the same situation you will
have with...
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Forum: Digital Photography
March 9th 08, 10:22 AM Posted to rec.photo.digital.slr-systems,rec.photo.digital,rec.photo.equipment.35mm,alt.photography
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Replies: 47
Views: 2,050
Whatever happened to Pentax?
Doug Jewell wrote:
nospam wrote:
pentax sdm lenses won't work on earlier
cameras, such as the k100d.
They work, they won't autofocus. Which is the same situation you will
have with...
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Forum: 35mm Photo Equipment
March 9th 08, 10:22 AM Posted to rec.photo.digital.slr-systems,rec.photo.digital,rec.photo.equipment.35mm,alt.photography
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Replies: 45
Views: 1,811
Whatever happened to Pentax?
Doug Jewell wrote:
nospam wrote:
pentax sdm lenses won't work on earlier
cameras, such as the k100d.
They work, they won't autofocus. Which is the same situation you will
have with...
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Forum: Digital Photography
December 22nd 07, 11:04 PM Posted to rec.photo.digital
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Replies: 9
Views: 713
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Forum: Digital Photography
December 13th 07, 01:53 PM Posted to rec.photo.digital
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Replies: 76
Views: 3,055
Read noise: get it 30x down?
David J Taylor wrote:
Sander,
If you consider the sensor to be delivering power into a resistive load,
rather than an open circuit voltage or a short circuit current, then
doubling the...
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Forum: Digital Photography
December 13th 07, 01:46 PM Posted to rec.photo.digital
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Replies: 76
Views: 3,055
Read noise: get it 30x down?
Don Stauffer in Minnesota wrote:
On Dec 12, 6:52 am, Sander wrote:
- a doubling of power is a 3dB change
- a doubling of voltage or current is a 6dB change (when measured at...
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Forum: Digital Photography
December 12th 07, 12:52 PM Posted to rec.photo.digital
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Replies: 76
Views: 3,055
Read noise: get it 30x down?
David J Taylor wrote:
- if you double the optical power, you would double the output voltage or
current from the typical sensor.
The word OR here is very important in this sentence.
- a...
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Forum: Digital Photography
November 2nd 07, 07:25 AM Posted to rec.photo.digital
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Replies: 89
Views: 3,294
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Forum: Digital Photography
November 2nd 07, 07:17 AM Posted to rec.photo.digital
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Replies: 89
Views: 3,294
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Forum: Digital Photography
October 22nd 07, 06:20 PM Posted to rec.photo.digital
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Replies: 70
Views: 2,001
Two questions in one Pentax - Canon - Nikon
SMS wrote:
Just avoid the K100D and D40/D40x at all costs. These are seriously
de-featured models, and you'll regret not moving up the product line one
step.
What is it about the K100D that...
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Forum: Digital SLR Cameras
October 12th 07, 07:34 PM Posted to aus.photo,rec.photo.equipment.35mm,rec.photo.digital.slr-systems
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Replies: 24
Views: 1,427
pentax 40/2.8 vs 50/1.4?
Fred McKenzie wrote:
I have both. The 40mm f/2.8 "pancake" lens is not a KA lens, so is more
difficult to use with an AF body. My 50mm f/1.4 is a KA lens, so all I
have to worry about is...
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Forum: 35mm Photo Equipment
October 12th 07, 07:34 PM Posted to aus.photo,rec.photo.equipment.35mm,rec.photo.digital.slr-systems
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Replies: 24
Views: 1,137
pentax 40/2.8 vs 50/1.4?
Fred McKenzie wrote:
I have both. The 40mm f/2.8 "pancake" lens is not a KA lens, so is more
difficult to use with an AF body. My 50mm f/1.4 is a KA lens, so all I
have to worry about is...
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Forum: Digital Photography
September 15th 07, 08:57 AM Posted to rec.photo.digital
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Replies: 22
Views: 1,015
Lens choice recommendations
John Turco wrote:
The Pentax K100D - not the K10D - features SR (Shake Reduction).
John, both the K100D and K10D feature SR.
The K110D doesn't have SR.
SR.
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Forum: Other Photographic Equipment
September 4th 07, 08:59 AM Posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.misc,alt.photography,rec.photo.equipment.misc
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Replies: 18
Views: 3,797
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Forum: Digital Photography
September 4th 07, 08:59 AM Posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.misc,alt.photography,rec.photo.equipment.misc
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Replies: 18
Views: 1,216
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Forum: Digital Photography
July 25th 07, 05:02 PM Posted to rec.photo.digital
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Replies: 20
Views: 872
D40x or D80 camera
lerameur wrote:
I saw that the Pentax K10D has a problem getting crisp edge pictures,
at least for the jpeg format. The image quality is not as good as the
Nikon if I refer myself to the...
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Forum: Digital SLR Cameras
July 21st 07, 12:42 PM Posted to rec.photo.digital.slr-systems
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Replies: 9
Views: 670
Sigma and Tamron 18-200 for Pentax
gerrit wrote:
"Mark B." wrote in message
Nobody else mentioned this, but take a look at the new version of the
Sigma
which is optically stabilized. Assuming...
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Forum: Digital Photography
July 14th 07, 10:58 AM Posted to rec.photo.digital
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Replies: 60
Views: 1,852
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Forum: Digital SLR Cameras
April 11th 07, 10:44 PM Posted to rec.photo.digital.slr-systems
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Replies: 17
Views: 827
Lighting questions
Wolfgang Weisselberg wrote:
Alan Browne wrote:
This is done
via a transistor called a thyristor which opens the circuit to the
flash tube very...
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Forum: Digital SLR Cameras
March 22nd 07, 10:07 AM Posted to rec.photo.digital.slr-systems
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Replies: 6
Views: 559
Pentax K100D stabilizer
wrote:
I've seen at least one comment here about the Pentax K100D stabilizer
system producing modestly good results, but no better than that.
IME it produces excellent...
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Forum: Digital SLR Cameras
December 16th 06, 11:20 AM Posted to rec.photo.digital.slr-systems
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Replies: 4
Views: 403
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Forum: Digital SLR Cameras
December 16th 06, 12:00 AM Posted to rec.photo.digital.slr-systems
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Replies: 27
Views: 1,152
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Forum: Digital Photography
December 8th 06, 06:16 PM Posted to rec.photo.digital
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Replies: 25
Views: 1,269
Furture Shock! Pentax K100D
Paul Mitchum wrote:
Why can't it have aperture preview? (But somebody told me it's possible
to get aperture preview in the K100D, so I'll look into the manual for
that.)
The little...
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