Metz flash for Pentax - is it 100% compatible with NX cameras?

Started Dec 17, 2011 | Discussions
Kirill_est
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Metz flash for Pentax - is it 100% compatible with NX cameras?
Dec 17, 2011

As simple as Metz (Mecablitz) 24 AF or 36 AF? Have been googling it and none the wiser I am afraid

Thing is, I have Pentax Q and Samsung NX100 and I want to buy just the one flash, with TTL compatibility, is this realistic?

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viking79
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Re: Metz flash for Pentax - is it 100% compatible with NX cameras?
In reply to Kirill_est, Dec 17, 2011

Kirill_est wrote:

As simple as Metz (Mecablitz) 24 AF or 36 AF? Have been googling it and none the wiser I am afraid

Thing is, I have Pentax Q and Samsung NX100 and I want to buy just the one flash, with TTL compatibility, is this realistic?

Samsung changed their flash from the Pentax, I don't think it is compatible at all now. Their old SLR cameras (which were rebadged Pentax cameras) would work, but the NX series uses something new.

Eric

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Auster Pilot
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Re: Metz flash for Pentax - is it 100% compatible with NX cameras?
In reply to viking79, Dec 17, 2011

I have a Pentax K100D and Samsung GX-10 (the Pentax K10D Clone) and can confirm that Pentax P-TTL flash systems do not work in TTL mode on the NX100.

If the flash has Manual mode then this can be used with exposure in M (manual) on the camera - although some versions of NX firmware seem to prevent this as well.

I have no problem use a 20 year old Chinon Auto-Thyristor flash (where the flash can be made to calculate the required flash power independantly of the camera). And that works well for me. My Pentax compatible Signa EF-530 DG ST works in manual mode only on the NX, but I can't control the zoom level on it so it always works in Wide-Angle.

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Kirill_est
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Re: Metz flash for Pentax - is it 100% compatible with NX cameras?
In reply to Auster Pilot, Dec 19, 2011

So I guess the opposite won't work either - if I buy a Samsung NX flash, it won't have TTL support when I use it with Pentax Q ??

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Auster Pilot
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Re: Metz flash for Pentax - is it 100% compatible with NX cameras?
In reply to Kirill_est, Dec 19, 2011

There has never been any standard of Flash connectivity since Flash technology started getting intelligent and using TTL features. And of course - like the move from M42 screw thread to Bayonets - the opportunity to lock you into one manufacturer or another's equipment range is clearly seen (by the manufacturers) as being of benefit to them.

Personally I think the benefits of a common technology standard benefit everyone
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sterretje
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You might be able to get it right
In reply to Kirill_est, Dec 19, 2011

You need a flash that uses SCA adapters to connect to the camera. Metz 54 and certain Metz hammerheads have this way of connecting to the camera. Quite sure Metz has SCA adapters for the Pentax system, not so sure if they have adapters for the Samsung NX.

Leave it up to you to do the research And those are not the cheapest flashes either

PS
It looks like the 54 is discontinued

http://www.metz.de/en/flash-units/product-ranges/sca-flash-units.html

PPS
You might be better of with a simple automatic flash; will work on all systems.

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Kirill_est
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Re: You might be able to get it right
In reply to sterretje, Dec 19, 2011

sterretje wrote:

You might be better of with a simple automatic flash; will work on all systems.

Erm, so what is the difference between TTL and simply automatic? If the latter works fine on all systems, why have the (different) TTL varieties at all? The more I research external flashes, the more confusing it becomes

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Thomas Wieser
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Re: You might be able to get it right
In reply to Kirill_est, Dec 20, 2011

Simply automatic means that a sensor in the flash controls the power output. You have to set the camera to manual control and choose f stop as suggest by flash.

TTL means that the camera can control the flash by metering the amount of flash reflected by subject. As metering is

Through The Lens this even does take care of filters on the lens that might cause loss of light.

Thomas

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sterretje
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TTL versus automatic
In reply to Kirill_est, Dec 20, 2011

With TTL, the camera determines when correct exposure is achieved and tells the flash to stop emitting light. With an automatic flash, the flash determines when correct exposure is achieved and stops emitting light.

With 'simple' automatic flashes, you need to match camera settings with flash settings (ISO and aperture) as they are not communicated like in TTL. On the camera you need to set the sync speed to X-sync speed or slower.

It's often a once-off exercise unless you play all the time with DOF and change the aperture. Determine the maximum reach that you need for a 'shoot' (read up on relationship between guidenumber, distance and aperture as well as on how ISO 'affects' guidenumber); I usually look at my environment and think "ah, 8 meters reach will do". Let's assume a flash with a guide number of 36. ISO 100 and f/4 will give a flash range from about 1 meter to 9 meters when using direct flash so a subject that is between 1 and 9 meters will be properly exposed. Need more reach (either direct flash or for bounce)? Crank up the ISO on both camera and flash or set a wider aperture on both. Want to use a narrower aperture with the same reach? Crank up the ISO on both and set both to the desired aperture.

There are things that can't be done without TTL (HSS comes to mind), but photographers have used even simpler flashes than the automatic ones for decades, so we should be able to do so as well

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Kirill_est
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Re: TTL versus automatic
In reply to sterretje, Dec 20, 2011

Thanks! As I understand, these "universal" flashes might have a problem called "trigger voltage" as it is different for different cameras and I have been reading that it can actually fry the camera. But to find the respective trigger voltages, you have to dig deeper, cannot see them in my NX 100 or Q specs for instance. Thinking of getting the Metz 20 C if I manage to determine the trigger voltage compatibility.

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Coldamus
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Re: TTL versus automatic
In reply to Kirill_est, Dec 20, 2011

This post on the Canon talk forum indicates the Metz trigger voltage is 5.3 volts.
http://forums.dpreview.com/forums/read.asp?forum=1010&message=26816885

On that basis, you should be right to go. I doubt there would be any camera unable to handle a trigger voltage that low.

I've measured the trigger voltage on my Samsung SEF20A flash as 5.5 volts. Samsung does not publish the maximum safe trigger voltage for the nx but obviously it must be 5.5 volts or more. The Pentax Q would certainly be able to handle anything in that range.

Only caution is that you may want to measure the trigger voltage of the Metz flash yourself rather than rely on third party evidence.

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Auster Pilot
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Re: TTL versus automatic
In reply to Coldamus, Dec 20, 2011

2 places I go to check out Trigger Voltages are:

http://www.botzilla.com/photo/strobeVolts.html

http://dpanswers.com/roztr/volt_finder.php

And there is also a useful article on checking the voltage yourself on the Dpanswers site: http://dpanswers.com/content/genrc_flash_measuretv.php

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