All Forum Comments
Comment by MattMatic posted on BUying a new flash for *istds help!!!!! at 10/11/2005 - 14:25
A-SAH-HEE
http://www.mail-archive.com/pentax-discuss@pdml.net">target="blank">http://www.mail-archive.com/pentax-discuss@pdml.net/msg109969.html
But, you'll find this humerous:
http://www.mail-archive.com/pentax-discuss@pdml.net">target="blank">http://www.mail-archive.com/pentax-discuss@pdml.net/msg110002.html
Check this Japanese guide out:
http://www.suzakuseishi.com/FushigiYuugi/Dictionary/
A . . . . pronounced "ah" as in "Yaht"
I . . . pronounced "ee" as in "Tree
E . . . pronounced "eh" as in "Bet"
O . . . pronounced "oh" as in "Go"
U . . . pronounced "ooh" as in "boot"
Comment by MattMatic posted on Dr. Asahi's Name at 10/11/2005 - 16:28
http://www.mail-archive.com/pentax-discuss@pdml.net">target="blank">http://www.mail-archive.com/pentax-discuss@pdml.net/msg109943.html
I say AH-SAY-HIGH
But then I'm probably wrong too. I have some Japanese friends - maybe I'll ask them
Matt
Comment by MattMatic posted on Dr. Asahi's Name at 10/11/2005 - 16:27
Yes, I know there's that way... and the Expodisc frame will give me an absolutely accurate grey point, but it means taking another RAW image.
Maybe I'm not using the Expodisc 100% correctly and introducing a slight colour cast when manually setting the WB. I'll look into it...
Matt
Comment by MattMatic posted on White balance on the *ist-D at 09/11/2005 - 12:30
I took WB settings in AdobeRGB and sRGB at +0eV and +1.5eV (just in case there was an exposure issue).
This time they all are correct...
Now I am completely baffled. Sometimes the manual WB gives bizarre results, sometimes accurate.
Time for some scientific experiments...
Comment by MattMatic posted on White balance on the *ist-D at 08/11/2005 - 09:47
I am experiencing some horrible white balance issues with the *ist-D. Namely that the manual white balance just doesn't seem right. If you've been following along, I have an Expodisc, an Agfa IT-8 target, and a QPcard 201 colour target (though a QPcard 101 grey card would suffice).
Here's my process:
* Manually set the WB with the Expodisc
* Take a frame in RAW with the Expodisc on (perfect grey)
* Shoot the IT8 & QP201 under sunlight in RAW and JPG
* Bring into Capture One
What I've noticed is the camera reported WB is whacky! 12400/30 (temp/tint).
If I eyedrop off the Expodisc frame I get 6900/21 and the image looks much better.
If I eyedrop off the QP201 grey patch I get 6600/21 and the image looks better.
Even more strangely the JPG images (in AdobeRGB) are still way off - not enough blue, and too much red. I am completely puzzled by what's going on (except that someone else with an *ist-D had posted a similar observation).
To put your mind at rest: C1LE, Adobe Camera RAW (CS2), and Raw Shooter Premium all do the same kind of thing (with variations in figures etc).
Has anyone else got a decent grey card and the *ist-D? If so, maybe you could try the same sequence and post your RAW software & temp/tint values here...
Thanks
Comment by MattMatic posted on White balance on the *ist-D at 07/11/2005 - 16:19
The dyes they use are flat spectrum. They don't suffer from metamerism (where the colour appears to be different under varying lighting conditions). This is also important in a decent grey card because you want it to be true grey under all lighting conditions (read this link for more info: http://www.extremetech.com/article2/0,3973,13764,00.asp )
I have the QP201 which has colour patches on too, and you can use their software to correct JPGs and TIFFs. Quite nifty, and not very expensive either
Matt
Comment by MattMatic posted on Three humped camel??? at 07/11/2005 - 12:59
It appears to be internal in the *ist-DL and could be one of three things:
1. Lithium cell (unlikely as these run out)
2. Rechargeable NiMH/Nicad that's trickle charged from the main AAs
3. Supercap (extremely large capacitor that's used for keeping SRAM & real time clocks running). Trickle charged from the main AAs.
I'd guess it's probably 3. The supercaps can run for up to a couple of weeks and are more reliable that internal rechargeables
Matt
Comment by MattMatic posted on Possibly a dumb question at 07/11/2005 - 11:32
It requires fixing, and may be similar to an experience we had with an S40 that got dropped. Read this link:
https://www.pentaxuser.com/forum/viewtopic.php?t=1577&highlight=optio+s40+fo...
This is not a "user fix" by any means. But if you know anyone who's good at fixing things, it's not that difficult.
And yes, it will cost a lot from Pentax (nearly the cost of a new camera). If you have a local "traditional" camera shop they may be able to help (along with the information in the thread I referred to).
Hope that help,
Matt
Comment by MattMatic posted on s40-optical lens dont retract bak in afta switchin of camera at 07/11/2005 - 09:46
Circ polariser, a few ND grads, and an ND0.6.
There are also third party filters available (I bought some of mine from www.srbfilm.co.uk )
Matt
Comment by MattMatic posted on confusion about filters... at 04/11/2005 - 22:07


I have absolutely no experience with the Sigma flashes, but personally I would stick to Pentax
The other thing you should consider getting is a Stofen Omnibounce. It's available for the AF360 (and will eventually be available for the AF540). It softens the light and is great for portraits etc. I usually keep the AF360 with the Omnibounce on, unless I need to cover a great distance.
I've seen the AF360 for around £160 if you shop around on the Internet.
(For the record, I also have a hefty Metz 50MZ5 which is a superb flash, but definitely not as portable as the AF360 - which I wouldn't be without )
Matt