All Forum Comments
Comment by MattMatic posted on Studio Lighting at 23/03/2009 - 16:35
You may find it easier if you map the ISO to one of the wheels in Tv mode (and Av mode). This enables instant access to the ISO. Pressing the Green button puts it into Auto ISO and adjusting the wheel puts straight into manual ISO
(Alternatively you can access ISO directly by holding down the OK button and moving the front edial. Again, holding down OK and pressing the green button will engage Auto ISO).
HTH!
Stefan,
Going slightly OT...
It depends on what type of sensor is being used as to whether a shutter (yes, with curtains) is needed. The sensors used in dSLRs (like the K10D, and most other makes too) need a physical shutter.
IIRC, they differ in the way the pixel values are read out. The dSLR reads out a column (or row) at a time, and because of this time lag needs a physical shutter. The compact digicam electronics can "freeze" the image and read it out when needed - and therefore do not need a physical shutter (it's done in electronics instead).
Wish I could find the web page describing it...
Matt
Comment by MattMatic posted on HS flash in Tv with K10D and AF360 at 22/03/2009 - 11:39
EDIT: Changed the title: https://www.pentaxuser.com/forum/topic/Cannot-find-Jpeg-on-my-CS3-10910
Comment by MattMatic posted on Thread Oddity at 21/03/2009 - 11:07
Matt
Comment by MattMatic posted on Matt Matic's Pentax dSLR Flash Guide at 20/03/2009 - 22:12
It is confusing isn't it!
Normally when using flash you should be mostly interested in the aperture - because it's the aperture that controls the amount of flash lighting applied (the shutter speed is more or less irrelevant).
If you use P mode on the camera and adjust the Av setting then everything is logical.
If you want to adjust Tv then the Tv mode makes perfect sense - and that works logically too.
Try this: Put down the flash, use P mode, point to a bright object and manually override the shutter speed to a high value. Now point to a dark object and adjust the Tv again. You'll find that it's limited in the way you describe.
However, the difference is that without flash the camera blinks the aperture value (i.e. "I can't open the lens any wider than f/4!!"), but when you engage the flash the camera turns off this flashing warning
(There is a similar issue with bright objects too - when using flash there are situations where you'd expect the meter to blink to indicate out-of-range, but because flash is enabled this blink operation seems to be disabled.)
In general I'd suggest Av mode or M for flash
Hope that helps explain!
Matt
Comment by MattMatic posted on A K20D anomaly when using flash? at 20/03/2009 - 16:22
If you're wanting to use old flashguns as slaves then you MUST use the 54PZF on "A" or "M" mode only - which really means having the camera in "M" mode. That'll be ideal for night landscapes.
The P-TTL "intelligent" mode will fire two short bursts of flash and "dumb" slaves will fire on the pretrigger.
So, the "A" and "M" modes on the flash will fire a single burst of light. You can then use ANY flashgun you like with a suitable slave cube. Ideally get a flash that has control over manual mode - the smaller flashes often don't have "M" mode, or M-mode-power settings.
e.g. flash cube: http://www.7dayshop.com/catalog/product_info.php?manufacturers_id=&products_id=7...
or
http://www.7dayshop.com/catalog/product_info.php?manufacturers_id=&products_id=7...
My advice - search out the bargain buckets of local photography shops and second hand shops. You should be able to pick up a reasonably powered Sunpak, old Pentax, or Vivitar for around £20
HTH!
Matt
P.S. And there is, as Tel says, my e-book
EDIT: Just seen your payment arrive Simon... I'll email it back to you when I get home this evening!
Comment by MattMatic posted on Samsung SEF-54PZF and cheap slave/satellite at 20/03/2009 - 11:29
It is down to the physics of the shutter that makes the limit.
All cameras have a shutter speed limit for external flash. Some other brands may go as high as 1/250s - but they all have a limit!
If you're having problems with the amount of light, then turn the light heads down until you get under 1/125s! Aim for around f/5.6 to f/11, and use the lowest ISO rating (ISO100 on the K200D?) Definitely use a fixed ISO - not Auto ISO (otherwise the camera will push up the ISO to handle the ambient light, not "knowing" that you've got huge flash heads to fill in the light!
HTH!
Matt
Comment by MattMatic posted on External flash will not engage over 125/sec exposure at 20/03/2009 - 09:21
There's also Bryan Peterson's books - "Learning to see creatively" and "Understanding Exposure" that are also helpful.
No PP in any of those
HTH!
Matt
Comment by MattMatic posted on Recommended books? (Not PP!!) at 18/03/2009 - 14:33
http://www.topazlabs.com/topazlabs/03products/topaz_adjust/
This is tonemapping... which is separate from HDR assimilation
...but it looks an interesting plugin though
Matt
Comment by MattMatic posted on Guidance on HDR setup on k10d at 17/03/2009 - 17:23
Matt
Comment by MattMatic posted on Lens Align By Rawworkflow. at 17/03/2009 - 14:08


* Use sheets of packing polystyrene for reflectors (if your teeth can stand the squeaking noise! :lol
* A sheet of aluminium kitchen foil can be used as a silver reflector
* Use old white sheets for diffusers
* Use old dark sheets for backdrops
It's all about controlling the light It's best to learn this without spending too much money... when you've sussed out your skill levels and the possible returns, then (perhaps) invest in pro-lighting.
You can also experiment with cheap lighting - halogens etc. Or cheap, old flashguns.
Oh, yes, and practise, practise, practise.... and more practise
HTH!
Matt