have to use butt crack spackle on this one, or just the plug in for
> it.
>
> Dave
>
> On Fri, Apr 25, 2008 at 1:54 PM, P. J. Alling <[EMAIL PROTECTED]> wrote:
>
>> The continuing discussion of back focus has gotten to me. I've spent
>> way too much time
Did you have to use butt crack spackle on this one, or just the plug in for it.
Dave
On Fri, Apr 25, 2008 at 1:54 PM, P. J. Alling <[EMAIL PROTECTED]> wrote:
> The continuing discussion of back focus has gotten to me. I've spent
> way too much time on this shot already,
The continuing discussion of back focus has gotten to me. I've spent
way too much time on this shot already, however I have an excellent
example of back focus. Taken in a smoky club last night.
http://www.mindspring.com/~distilfink/PESO%20--%20backfocus.html
Equipment: Pentax *ist-D
On Feb 25, 2008, at 6:29 PM, William Robb wrote:
>
> - Original Message -
> From: "Steve Desjardins"
> Subject: Re: K20D & back focus
>
>
>> I've never really noticed any back/front focusing issues, but you
>> folks
>> are making
Anthony Farr escribió:
> The early Pentax DSLRs had IR cutoff filters in front of their imaging
> sensors that nevertheless transmitted enough near IR light to make a useful
> IR exposure with an R-72 or similar filter. Can you assert that the IR
> cutoff filter over the AF sensor is more absolute
- Original Message -
From: "Steve Desjardins"
Subject: Re: K20D & back focus
> I've never really noticed any back/front focusing issues, but you folks
> are making me paranoid. Is there a good kind of shot for testing this?
> I'm thinking of using the
be
a good indicator or would other conditions be better?
>>> mike wilson <[EMAIL PROTECTED]> 2/25/2008 3:53 PM >>>
A better way of saying what I was trying to
>
> From: Paul Stenquist <[EMAIL PROTECTED]>
> Date: 2008/02/25 Mon AM 11:26:58 GMT
> To: Pentax
A better way of saying what I was trying to
>
> From: Paul Stenquist <[EMAIL PROTECTED]>
> Date: 2008/02/25 Mon AM 11:26:58 GMT
> To: Pentax-Discuss Mail List
> Subject: Re: K20D & back focus
>
> I think it's more likely that the sensor's focus plane
I'm most positive that Izumi Taniguchi who contributed allot to
explaining tips and tricks of K10D shall cover back focus adjustments
issue for K20D as soon as camera shall get on production lines.
See Digiichi website here ->
http://www.digital.pentax.co.jp/en/special/digiic
I think it's more likely that the sensor's focus plane is more
accurate rather than tighter than that of film. The focal point is
the focal point. And since film is somewhat curved, it can never be
totally accurate.
Paul
On Feb 25, 2008, at 3:58 AM, mike wilson wrote:
>
>>
>> From: "Bob Sull
The early Pentax DSLRs had IR cutoff filters in front of their imaging
sensors that nevertheless transmitted enough near IR light to make a useful
IR exposure with an R-72 or similar filter. Can you assert that the IR
cutoff filter over the AF sensor is more absolute in its prohibition of IR
light
Anthony Farr escribió:
> The difference between IR focus and visible wavelength focus is not constant
> from lens to lens. Different designs of the same focal length can have
> different IR focus corrections, and the correction is not necessarily
> proportional when comparing lenses of different f
>
> From: "Bob Sullivan" <[EMAIL PROTECTED]>
> Reading the promo literature on the K20D, I noticed a new feature.
> The camera has the ability to store adjustments for backfocus (or
> forward) for 20 lenses.
> The claim is that all the DA lenses are fine, but others may need adjusting.
>
> Any
-Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
> Bob Sullivan
> Sent: Monday, 25 February 2008 4:21 PM
> To: PDML
> Subject: K20D & back focus
>
> Reading the promo literature on the K20D, I noticed a new feature.
> The camera
At 02:38 PM 25/02/2008, William Robb wrote:
>- Original Message -
>From: "Bob Sullivan"
>Subject: K20D & back focus
>
>
> > Reading the promo literature on the K20D, I noticed a new feature.
> > The camera has the ability to store adjustments for
- Original Message -
From: "Bob Sullivan"
Subject: K20D & back focus
> Reading the promo literature on the K20D, I noticed a new feature.
> The camera has the ability to store adjustments for backfocus (or
> forward) for 20 lenses.
> The claim is that all t
Reading the promo literature on the K20D, I noticed a new feature.
The camera has the ability to store adjustments for backfocus (or
forward) for 20 lenses.
The claim is that all the DA lenses are fine, but others may need adjusting.
Any ideas on why this might be?
Do some lenses transmit more of
[mailto:[EMAIL PROTECTED]
Sendt: 5. december 2005 18:01
Til: pentax-discuss@pdml.net
Emne: Re: Back Focus
On Dec 5, 2005, at 8:41 AM, Christian wrote:
> There was a lot of whinging on Canon forums about the 20D
> backfocusing When I bought mine, Tom VanVeen mentioned one of
> h
On Dec 5, 2005, at 8:41 AM, Christian wrote:
There was a lot of whinging on Canon forums about the 20D
backfocusing When I bought mine, Tom VanVeen mentioned one of
his collegue had a problem and he asked if it was an issue on my
camera. Canon still (I believe) has not acknowledged the
- Original Message -
From: "Dave Brooks" <[EMAIL PROTECTED]>
The back focus problem a LOT of D1's suffered(as mine does) seems to be
linked to a ~slightly~ out of aligned centre sensor,acording to
Nikon.Although they have never officially admitted to this,will
ecember 2005 01:10
Til: PDML
Emne: Back Focus
Date: Sun, 4 Dec 2005 23:31:00 +
From: Cotty <[EMAIL PROTECTED]>
To: "pentax list"
Subject: Re: A better 70-200mm F. 2.8
Message-Id: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-E
d, unleashed:
>All of them seem to suffer from Back Focus.
Sorry to be a pain Jens, but the only back focus I have ever heard of in
optical hardware terms is to do with manually adjusting the rear element
(s) of a lens to achieve correct focus depending on what camera (video)
a particular l
.4 on the MZ-S and the F 70-210 (long focal lengths around
> 135-210mm only) on the *istD.
> You (I?) see in focus objects a lot closer than the one you focused on.
>
> Dario
>
> - Original Message -
> From: "Jens Bladt" <[EMAIL PROTECTED]>
> T
From: "Jens Bladt" <[EMAIL PROTECTED]>
To:
Sent: Friday, December 02, 2005 6:19 AM
Subject: SV: Back Focus!
Thnaks, Dave.
I will pass your information on.
Regards
Jens
Jens Bladt
http://www.jensbladt.dk
-Oprindelig meddelelse-
Fra: [EMAIL PROTECTED] [mailto:
Thnaks, Dave.
I will pass your information on.
Regards
Jens
Jens Bladt
http://www.jensbladt.dk
-Oprindelig meddelelse-
Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sendt: 1. december 2005 08:57
Til: pentax-discuss@pdml.net
Emne: Re: Back Focus!
Jens
I have never had a problem with
Jens
I have never had a problem with "back focus" with my istD, however in low light
situations
with my D1
it does happen.
Camera tends to focus on an object further that what you really want. The
finder in the D1
is very
good, and i can usually tell if i'm off,then i just ref
Hello list
What is "back focos"?
Does the camera focus closer to or further away from where it should?
Which lenses are especially prone to back focus on a *ist D?
Only "analog" lenses?
Please
A friend asked me. I don't know, so I ask where I expect people (you
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