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Search: Posts made by: Roger N. Clark (change username to rnclark)
Forum: Digital Photography December 19th 10, 05:48 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Dudley Hanks wrote:

Thanks, Roger, that gives me a fair bit to think about.


After a quick scan, I just have a couple of supplemental
questions:

1. When you refer to the Diffraction...
Forum: Digital Photography December 18th 10, 10:05 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

bobwilliams wrote:

Roger posts a lot of Quantitative data that are not available anywhere
else. I use them a lot.

Some of his photos are awesome.

Thanks Bob.

I don't enter many contests...
Forum: Digital Photography December 18th 10, 09:25 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Val Hallah wrote:
On Dec 6, 5:20 pm, "David J Taylor"david-
wrote:
A comparison of fixed focal length lenses& consumer zooms on DSLRs when
photographing...
Forum: Digital Photography December 18th 10, 07:43 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Paul Furman wrote:

Now some more abstract comparisons, I suspect the reason you don't see
super fast P&S lenses with shallow DOF is the exact same reason they
cost a lot in 35mm format. P&S...
Forum: Digital Photography December 18th 10, 07:40 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Dudley Hanks wrote:

To my reader, the Wikipedia article about the subject comes
across looking (sounding) like this:

The ability of an imaging system to resolve detail is
ultimately...
Forum: Digital Photography December 18th 10, 06:20 AM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:
On Fri, 17 Dec 2010 01:06:43 -0800, wrote:

I admire Roger's contributions to this newsgroup and take all his
data, images and...
Forum: Digital Photography December 18th 10, 06:12 AM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Dudley Hanks wrote:

Before all you purists post your kindly admonishments that I
am confusing diffraction and refraction, let me just poinht
out that the two concepts are, shall we say, at...
Forum: Digital Photography December 17th 10, 10:26 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Stacked teleconverters (was Telephoto Reach and Digital Cameras- lens comparison)

me wrote:
On Fri, 17 Dec 2010 07:43:54 -0700, "Roger N. Clark (change username
to wrote:


I have not seen any zoom ;ens that will work well with stacked...
Forum: Digital Photography December 17th 10, 04:00 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:
On Wed, 15 Dec 2010 08:39:38 -0700, "Roger N. Clark (change username to
wrote:

Superzooms Still Win wrote:
On Wed, 15 Dec 2010...
Forum: Digital Photography December 17th 10, 03:43 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Stacked teleconverters (was Telephoto Reach and Digital Cameras- lens comparison)

peter wrote:

I noticed on your site that you take images with stacked teleconverters.
It is my understanding that in addition to loss of light a teleconverter
also exaggerates any flaws in...
Forum: Digital Photography December 17th 10, 03:43 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Stacked teleconverters (was Telephoto Reach and Digital Cameras- lens comparison)

peter wrote:

I noticed on your site that you take images with stacked teleconverters.
It is my understanding that in addition to loss of light a teleconverter
also exaggerates any flaws in...
Forum: Digital Photography December 15th 10, 04:39 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:
On Wed, 15 Dec 2010 01:25:07 -0600, Dudley Hanks
wrote:

Now that Roger has debunked your claims about detail, LOL,

perhaps we...
Forum: Digital Photography December 15th 10, 04:38 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:
On Wed, 15 Dec 2010 01:25:07 -0600, Dudley Hanks
wrote:

Now that Roger has debunked your claims about detail, LOL,

perhaps we...
Forum: Digital Photography December 15th 10, 09:19 AM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:
On Tue, 14 Dec 2010 23:56:06 -0700, "Roger N. Clark (change username to
wrote:

Superzooms Still Win wrote:

I guess you want...
Forum: Digital Photography December 15th 10, 07:56 AM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:

I guess you want to get laughed out of the newsgroups again. Okay. If
that's what you want. Here's just a couple of posts from those many
discussion threads where...
Forum: Digital Photography December 15th 10, 06:19 AM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

David J Taylor wrote:

What is perhaps confusing is the effect of diffraction in object space
and sensor space. As I understand it, in object space - what the camera
sees - the effect of...
Forum: Digital Photography December 15th 10, 05:49 AM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:
On Tue, 14 Dec 2010 09:37:58 -0700, "Roger N. Clark (change username to
wrote:


It has not ever been shown that an image from a...
Forum: Digital Photography December 14th 10, 05:37 PM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

Superzooms Still Win wrote:
On Mon, 13 Dec 2010 23:20:21 -0700, "Roger N. Clark (change username to
wrote:


Any astronomer knows that resolution is...
Forum: Digital Photography December 14th 10, 07:20 AM Posted to rec.photo.digital
Replies: 68
Views: 2,687
Telephoto Reach and Digital Cameras - lens comparison

I was alerted to this thread by another.

Superzooms Still Win wrote:
On Mon, 6 Dec 2010 16:20:48 -0000, "David J Taylor"
wrote:

A comparison of...
Forum: Digital SLR Cameras August 16th 09, 03:22 PM Posted to rec.photo.digital.slr-systems
Replies: 49
Views: 2,997
Digital Dynamic Range and Exposure Latitude

How Lame Can He Get? wrote:
On Sun, 16 Aug 2009 07:28:14 -0600, "Roger N. Clark (change username to
rnclark)" wrote:

Too Funny wrote:
On Sat, 15 Aug 2009 22:58:48...
Forum: Digital SLR Cameras August 16th 09, 02:28 PM Posted to rec.photo.digital.slr-systems
Replies: 49
Views: 2,997
Digital Dynamic Range and Exposure Latitude

Too Funny wrote:
On Sat, 15 Aug 2009 22:58:48 -0600, "Roger N. Clark (change username to
rnclark)" wrote:

Some Clarity and Reason wrote:

p.s. You shouldn't be...
Forum: Digital SLR Cameras August 16th 09, 05:58 AM Posted to rec.photo.digital.slr-systems
Replies: 49
Views: 2,997
Digital Dynamic Range and Exposure Latitude

Some Clarity and Reason wrote:

p.s. You shouldn't be calling those calendars you print up that you hand
out to acquaintances and are quickly thrown in the trash as
"scientific-publications".
...
Forum: Digital SLR Cameras August 16th 09, 04:53 AM Posted to rec.photo.digital.slr-systems
Replies: 49
Views: 2,997
Digital Dynamic Range and Exposure Latitude

Floyd L. Davidson wrote:
The Believe Crap wrote:
And of course, that someone who has never tested these things for
themselves would find out that "x-spurt" Roger is in total...
Forum: Digital SLR Cameras August 10th 09, 05:32 AM Posted to rec.photo.digital.slr-systems
Replies: 49
Views: 2,997
Requirements for Good Photography -- Digital Dynamic Rangeand Exposure Latitude

Matt Clara wrote:

as far as trolls go,...

Same old, same old

He actually forgot the most important thing in photography:
It's the light.

I invite everyone to view my "crappy" photos at:
Forum: Digital Photography August 10th 09, 05:32 AM Posted to rec.photo.digital
Replies: 12
Views: 1,192
Requirements for Good Photography -- Digital Dynamic Rangeand Exposure Latitude

Matt Clara wrote:

as far as trolls go,...

Same old, same old

He actually forgot the most important thing in photography:
It's the light.

I invite everyone to view my "crappy" photos at:
Showing results 1 to 25 of 125

 
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