I can't use the AF360FGZ on the *istD to take pictures of my wife as the
preflash causes her to blink and then her eyes are shut for the main exposure.
I wish you could force it into TTL mode sometimes.
Don't recall it being a problem on the MZ-S, but then the results aren't
visible quite so
On Wed, 16 Feb 2005, John Francis wrote:
But you're still basing your agument on the (apparently unwarranted)
premise that the *ist-DS *does* disable TTL flash for all non-AF lenses.
According to other posters here, that simply isn't the case.
I am wrong and I apologise. Godfrey DiGiorgi set
Jens Bladt [EMAIL PROTECTED] wrote:
Matrix works with TTL: According to the EXIF ibfo avaliable in the INFO
menu, TTL flash will use matrix/pattern metering (*ist D), when an A or post
A lens is used at A-setting.
Yes, but the matrix metering will only affect the aperture/shutter speed
part of
. februar 2005 07:50
Til: pentax-discuss@pdml.net
Emne: RE: *istDS built-in flash overexposure problem
Matrix works with TTL: According to the EXIF ibfo avaliable in
the INFO
menu, TTL flash will use matrix/pattern metering (*ist D),
when an A or post
A lens is used at A-setting.
Jens
it for your
self.
All the best
Jens Bladt
mailto:[EMAIL PROTECTED]
http://hjem.get2net.dk/bladt
-Oprindelig meddelelse-
Fra: Godfrey DiGiorgi [mailto:[EMAIL PROTECTED]
Sendt: 17. februar 2005 17:55
Til: pentax-discuss@pdml.net
Emne: RE: *istDS built-in flash overexposure problem
Jens,
My
I don't own a dedicated external flash yet so it's hard to
compare P-TTL vs TTL results ... The DS' built-in flash ONLY
support P-TTL operation, so distance measurement when on full
Matrix/Evaluative metering is probably a given.
Do the A series manual focus lenses provide distance readout
to
On Thu, 17 Feb 2005, Godfrey DiGiorgi wrote:
Do the A series manual focus lenses provide distance readout
to the camera for Matrix/evaluative measurement purposes?
I don't think so:
http://kmp.bdimitrov.de/technology/K-mount/Ka.html
http://kmp.bdimitrov.de/technology/K-mount/Kaf.html
Godfrey DiGiorgi mused:
I don't own a dedicated external flash yet so it's hard to
compare P-TTL vs TTL results ... The DS' built-in flash ONLY
support P-TTL operation, so distance measurement when on full
Matrix/Evaluative metering is probably a given.
Do the A series manual focus
--- John Francis [EMAIL PROTECTED] wrote:
Do the A series manual focus lenses provide distance
readout
to the camera for Matrix/evaluative measurement purposes?
No. That information is only available over the digital
readout pin, which first appeared on the F-series lenses.
Thank you!
.
Jens Bladt
mailto:[EMAIL PROTECTED]
http://hjem.get2net.dk/bladt
-Oprindelig meddelelse-
Fra: Jens Bladt [mailto:[EMAIL PROTECTED]
Sendt: 17. februar 2005 07:50
Til: pentax-discuss@pdml.net
Emne: RE: *istDS built-in flash overexposure problem
Matrix works with TTL
Well, what I wrote is my understanding having read as much stuff
as I can find. If it's incorrect, I would be delighted to know.
Seems to me this is the primary theoretical advantage of P-TTL
... the ability to integrate a preflash plus ambient exposure
with all the information provided by the
2005 22:25
Til: pentax-discuss@pdml.net
Emne: Re: *istDS built-in flash overexposure problem
I thought the were no matrix when using flash?
On Thu, 17 Feb 2005 08:55:02 -0800 (PST), Godfrey DiGiorgi
[EMAIL PROTECTED] wrote:
Jens,
My understanding is that in TTL mode, the Matrix mode exposure
GD Seems to me this is the primary theoretical advantage of P-TTL
[...]
There is also a theoretical (and sometimes sadly real) disadvantage to
any pre-flash system, be it P-TTL, i-TTL E-TTL2, Minolta's one,
whatever... that is that it is slower than plain old TTL off-the-film
metering with film
Yup, I agree with that. The double-flash of 'anti-red eye'
modes, the preflash of P-TTL, etc, all have their downsides. TTL
flash metering itself is not always the best solution ... I
think I've gotten more good exposures with the Sunpak 383's
external auto-flash sensor than I have gotten with the
Missed the original post.
-Oprindelig meddelelse-
Fra: David Oswald [mailto:[EMAIL PROTECTED]
Sendt: 15. februar 2005 18:07
Til: pentax-discuss@pdml.net
Emne: *istDS built-in flash overexposure problem
Let's take, for example, the case of the SMC-Pentax FA 50mm f/1.4.
Shooting
-Oprindelig meddelelse-
Fra: Kostas Kavoussanakis [mailto:[EMAIL PROTECTED]
Sendt: 16. februar 2005 11:57
Til: pentax-discuss@pdml.net
Emne: RE: *istDS built-in flash overexposure problem
Missed the original post.
-Oprindelig meddelelse-
Fra: David Oswald [mailto:[EMAIL PROTECTED
On Wed, 16 Feb 2005, Jens Bladt wrote:
Kostas wrote:
I believe it was
mentioned previously that on the -Ds it does not do TTL if you don't
have an AF lens. This is a limitation induced with extortion in mind,
and they may have introduced a bug as a result. Anyone with a -Ds and
FA50/1.4 to
Jens Bladt mused:
Kostas wrote:
I believe it was
mentioned previously that on the -Ds it does not do TTL if you don't
have an AF lens. This is a limitation induced with extortion in mind,
Why are people so fast to make unfounded accusations like this?
Is this really true! What would AF
David Oswald [mailto:[EMAIL PROTECTED]
Subject: *istDS built-in flash overexposure problem
Let's take, for example, the case of the SMC-Pentax FA 50mm
f/1.4. Shooting at a distance of five feet, at ISO equivilancy
of
200, in fully automatic (smart picture) mode, the frame will
come
out
John you're right and you're wrong. If the lens tells the body the
focus distance, that would be usefully for
helping calculate the flash duration, disabling TTL flash with lenses
that don't support sending distance
information to the body has two purposes, and one is the sale of new
lenses,
According to my test (with *ist D), distance (AF) using an FA lens does not
influense flash output AT ALL.
But linking AE to the Foucus point does.
Jens
Jens Bladt mused:
Kostas wrote:
I believe it was
mentioned previously that on the -Ds it does not do TTL if you don't
have an AF lens. This
But you're still basing your agument on the (apparently unwarranted)
premise that the *ist-DS *does* disable TTL flash for all non-AF lenses.
According to other posters here, that simply isn't the case.
As I said, people are far too fast to accuse Pentax of deliberately
disabling bodies for the
--- John Francis [EMAIL PROTECTED] wrote:
But you're still basing your agument on the (apparently
unwarranted)
premise that the *ist-DS *does* disable TTL flash for all
non-AF lenses.
According to other posters here, that simply isn't the case.
Right. The DS body's built-in flash does ONLY
It seems to me that so called advanced P-TTL is a cut down version of proper
TTL. It cuts the flash off a a predetermined time based on the preflash
exposure measurement, rather than cutting it off due to measuring it during the
actual flash exposure.
Or am I missing something?
Nick
As opposed to disabling features because people are too ignorant to
learn to use them correctly...
John Francis wrote:
But you're still basing your agument on the (apparently unwarranted)
premise that the *ist-DS *does* disable TTL flash for all non-AF lenses.
According to other posters here,
Nothing new there, though.
Look at the ME, for example. Auto-exposure only.
(Or, if you consider that just an intermediate model
until the ME Super came along, how about the MG or MV?)
Stripped-down models with features removed are common.
SP500, K1000, Program Plus, A3000, the whole P series
My understanding is that P-TTL allows the camera to take a flash
reading and use the full matrix exposure evaluation system,
including whether you've linked the AF point to the exposure
evaluation, where TTL flash only gives access to the CW
Averaging meter pattern's exposure setting.
I don't
DiGiorgi [mailto:[EMAIL PROTECTED]
Sendt: 17. februar 2005 00:43
Til: pentax-discuss@pdml.net
Emne: Re: *istDS built-in flash overexposure problem
My understanding is that P-TTL allows the camera to take a flash
reading and use the full matrix exposure evaluation system,
including whether you've linked
: RE: *istDS built-in flash overexposure problem
Matrix works with TTL: According to the EXIF ibfo avaliable in the INFO
menu, TTL flash will use matrix/pattern metering (*ist D), when an A or post
A lens is used at A-setting.
Jens Bladt
mailto:[EMAIL PROTECTED]
http://hjem.get2net.dk/bladt
Last week I decided it was finally time to move into the digital age
with respect to photography. My ZX-5n has served me well, but I found
that over the past few years I've been mostly just scanning my pictures
anyway, and it made sense to just eliminate that step.
Overall I'm more than pleased
-Oprindelig meddelelse-
Fra: David Oswald [mailto:[EMAIL PROTECTED]
Sendt: 15. februar 2005 18:07
Til: pentax-discuss@pdml.net
Emne: *istDS built-in flash overexposure problem
Last week I decided it was finally time to move into the digital age
with respect to photography. My ZX-5n has
Jens Bladt wrote:
Dave, I just made a similar test to yours - with the *ist D, though.
I get correctly exposed frames - even at 1/60 F. 2.8, useing P setting
at 200 ISO at 3-5 feet distance.
I also just tried 800 ISO and 3200 ISO. I still get correctly exposed
frames all the time!
Thanks for
meddelelse-
Fra: David Oswald [mailto:[EMAIL PROTECTED]
Sendt: 15. februar 2005 21:52
Til: pentax-discuss@pdml.net
Emne: Re: *istDS built-in flash overexposure problem
Jens Bladt wrote:
Dave, I just made a similar test to yours - with the *ist D, though.
I get correctly exposed frames - even
Jens Bladt wrote:
Yes, RTF = ReTractable Flash, I guess.
I'd go and see the dealer, if I were you, Dave. Show him what happens!
Did you do the test in a bright environment or in a dark place?
In a bright environment, the burn is not as significant, presumably
because the lens is further stopped
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