Digital SLR and P-TTL flash guide


trungduongca

Link Posted 16/01/2010 - 01:34
I just don't like to use P-TTL 'cause it sux
just fully manual control gives the best result, I only switch to P-TTL in wedding shots when there is so much movement
but thanks for the tips
K20D ,K10D, *ist DS, FA 50 f/1.4,F50 1.7,FA 28 f2.8, Tamron 17-50 f2.8, Tamron 90 f2.8, Tokina 28-70 f2.8,Sigma 70-200 HSM Macro II , DA*50-135 AF360FGZ, AF540FGZ

MattMatic

Link Posted 28/01/2010 - 13:02
Gareth,
Please re-read the sentence
It is the distance scale that will be incorrect, not the exposure.

Of course, if the flash says the maximum distance is 4m, your subject is at 3m and you are using a Stofen then you'll probably get an underexposed shot because the flash won't have the power to 'throw' the light that far

Does that make more sense? (Will send the e-book when I get home!)
Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)

eddyinga

Link Posted 02/02/2010 - 14:17
Alas! The 'P-TTL' information I've been looking for.

Thanks

Robin128

Link Posted 23/10/2010 - 10:03
Hi Matt,

Getting back into amateur photography and re-read your MattMatic Pentax dSLR Flash Guide. Version 1.00 last night.

Really good job, Matt.

Thanks.

Rob
K20D
MZ 50
Pentax lenses....DA* 55mm f1.4 SDM ....F 35-80 f4-5.6....DA 18-250 f3.5-6.3....F 100-300 f4.5-5.6, D FA Macro 100 WR f2.8.

Centon mirror lens 500mm.

Pentax Flash ....AF 360FGZ

JVC 3ccd GZ MC 500EK camcorder
Last Edited by Robin128 on 23/10/2010 - 10:04

royd63uk

Link Posted 04/06/2011 - 23:57
Is this guide relative to the K5? or will it need to be updated.....

I have the 360 and will get the guide if it is
regards
Roy

Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/

my pbase gallery

Mannesty

Link Posted 05/06/2011 - 07:15
Matt's guide is more relevant to the flashes and their features than the bodies, so yes, it's equally relevant to all Pentax DSLR bodies, including the K5 and probably the 645D as well.
Peter E Smith

My flickr Photostream

royd63uk

Link Posted 05/06/2011 - 12:08
Thanks Peter i have just purchased it...
regards
Roy

Pentax K3 gripped,and some lenses
https://www.flickr.com/photos/pentaxroy/

my pbase gallery

MattMatic

Link Posted 19/08/2011 - 15:24
Just thought I'd add an update to the exposure compensation...

(When using "Slow" flash mode, fiddling with a K5 + AF360)

* The regular +/- adjust affects the ambient light.

* The camera's flash +/- affects all flashes controlled by the camera.

* The flash's compensation (using "S" button) affects that flash

It gives quite a nice range of flexibility.
For example:

- Dial in +/- = -2 to reduce ambient by two stops

- Dial in flash menu +1 and flash's +1 to bring the flash exposure back to 'proper'

(But don't forget that you mustn't go closer than the minimum flash distance! Otherwise you'll get blown images!)


If you are using the pop-up flash as a controller then the camera's exposure system goes back to 'normal' There doesn't appear to be a way to use "Slow" in wireless (unless you use two flashes - one on the camera as a controller and a second slave).


It may also be that at least some of the Metz flash guns can throttle down to lower values (certainly my 50MZ5 can go down to less that 1/256 power!) and may offer a finer degree of control. (Need to check that). Of course you can always slug the flash with a diffuser/tissue/cloth to get closer anyway.

Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)
Last Edited by MattMatic on 19/08/2011 - 15:28

brodieshenton

Link Posted 09/04/2013 - 08:01
It's really a very nice post on flash guide in a detailed manner.
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