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Flash FL-related discussions can be found here.

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Old 13th April 2019
Internaut Internaut is offline
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Help me understand Flash....

So, I stuck the old FL-36R on the Pen F, last night, and did a few quick tests. Getting the flash into TTL Auto (baby steps, please), and setting the camera up to fire it to brighten up the room (flash pointed at the ceiling, angled to the left) was fairly easy. I made a couple of observations I donít get.
  • Sure, the flash does what I expect and very briefly lifts the light level of the room.
  • Aperture Priority says ďIím going to be 1/30, whatever you do, so tough!Ē.
  • Yet in Manual exposure I can, for example, set the shutter to 1/200 and get a bright photo, with accurate looking colours.
  • The cameraís light meter seems to report metering sans flash (e.g. shows a very negative exposure).

So it seems to be working albeit in a ďJason blundered in and for it working by accidentĒ kind of a way, and I donít know why.
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Old 13th April 2019
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Re: Help me understand Flash....

Quote:
Originally Posted by Internaut View Post
So, I stuck the old FL-36R on the Pen F, last night, and did a few quick tests. Getting the flash into TTL Auto (baby steps, please), and setting the camera up to fire it to brighten up the room (flash pointed at the ceiling, angled to the left) was fairly easy. I made a couple of observations I don’t get.
  • Sure, the flash does what I expect and very briefly lifts the light level of the room.
  • Aperture Priority says “I’m going to be 1/30, whatever you do, so tough!”.
  • Yet in Manual exposure I can, for example, set the shutter to 1/200 and get a bright photo, with accurate looking colours.
  • The camera’s light meter seems to report metering sans flash (e.g. shows a very negative exposure).

So it seems to be working albeit in a “Jason blundered in and for it working by accident” kind of a way, and I don’t know why.
Have you set the flash menu settings for both Manual and Aperture priority? (I don't know the camera but based on mine and have never used Auto).

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Old 13th April 2019
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Re: Help me understand Flash....

I have two of those flashes (1 from new) & one of them started playing up from a certain range of settings, so I assume your flash is working without fault then?
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I fiddle with violins (when I'm not fiddling with a camera).
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Cameras: OM-D E-M1 & Mk II, Olympus Stylus 1, OM-D E-M5.
Lenses: M.ZD12-40mm f2.8 PRO Lens, M.ZD40-150mm f2.8 PRO Lens with MC-14, M.ZD12-50, M.ZD60 Macro, M.ZD75-300 Mk II, MMF-3, ZD14-54 II, Sigma 150mm F2.8 APO Macro DG HSM.
Flashes: FL36R X2, FL50R, FL50.
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Re: Help me understand Flash....

In manual setting, you can set both the aperture and the shutter speed (up to the maximum). The flash will then determine the exposure. You may have to increase the ISO if the flash is not powerful enough e.g. in a large hall.

In aperture priority you may get only fill flash.

Harold
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Re: Help me understand Flash....

Thanks. Yes, the flash does appear to be working. Note that at the moment, I’m playing with on camera flash. Off camera comes when I’m fairly certain I reasonably understand this.
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Re: Help me understand Flash....

A good way to get to understand flash is to do it all manually, using the old technique of Guide Number.

Also worth remembering is the inverse square law. If you move a fixed power flash away to twice the distance, you get a quarter of the light intensity at the subject.

http://www.digital-slr-guide.com/fla...de-number.html
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Re: Help me understand Flash....

Some years ago 'English Bob' did a definitive set-up for the FL36 and FL50 flashes. Here's a link to a pdf of his instructions:

https://dwehner.zenfolio.com/flashphotography.pdf

The original thread is here:

https://www.dpreview.com/forums/thread/1440403

Jim
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Re: Help me understand Flash....

There was talk a while ago for some Olympus supported tutorials and workshops. They seem to have evaporated...

I've never quite understood how the flash and camera work together and often end up frustrated with the whole setup.

As an example of this you can set a minimum and maximum flash synchronisation up in the menus, but mounting the flash on top of the camera forces a shutter speed up to 1/50th, this is with the STF-8, The FL36R and the FL600R, and I never get the compulsory flash fire logo enabled, it's always greyed out... At the moment with the camera in manual exposure mode I can't set higher then 1/50th, and the full flash logo and the red eye reduction logos are both greyed out...

The TTL only really seems to operate as expected when the flash is directly mounted on the camera, with remote flash units it never seems to do the right thing!

I'm using the camera and flash in manual more and more to get around the flash system, as it never does what I expect automatically.
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Re: Help me understand Flash....

Quote:
Originally Posted by Walti View Post
The TTL only really seems to operate as expected when the flash is directly mounted on the camera, with remote flash units it never seems to do the right thing!
Do you have the command unit flash on the hot shoe when you have the flsh off camera? (I can't think how it would work at all if not).

If so is it "on" i.e. popped up if it is the pop-up version.

Is RC switched on in the camera menu?

Harold
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Re: Help me understand Flash....

Quote:
Originally Posted by Harold Gough View Post
Do you have the command unit flash on the hot shoe when you have the flsh off camera? (I can't think how it would work at all if not).

If so is it "on" i.e. popped up if it is the pop-up version.

Is RC switched on in the camera menu?

Harold
All is set up as it should be but the output never quite does whatís written in the manuals.... Iíll keep plodding on with it and will understand it one day!
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Re: Help me understand Flash....

Quote:
Originally Posted by Jim Ford View Post
Some years ago 'English Bob' did a definitive set-up for the FL36 and FL50 flashes. Here's a link to a pdf of his instructions:

https://dwehner.zenfolio.com/flashphotography.pdf

The original thread is here:

https://www.dpreview.com/forums/thread/1440403

Jim
Now thereís a blast from the last. Iíve heard of if him, but see heís not posted on dpreview since 2006!
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Re: Help me understand Flash....

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Originally Posted by Internaut View Post
Now thereís a blast from the last. Iíve heard of if him, but see heís not posted on dpreview since 2006!
I've still got a print-out of his excellent flash set-up instructions.

Jim
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Old 14th April 2019
Harold Gough Harold Gough is online now
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Re: Help me understand Flash....

Quote:
Originally Posted by Walti View Post
All is set up as it should be but the output never quite does whatís written in the manuals.... Iíll keep plodding on with it and will understand it one day!
The output indicated will be for indoors where the light bounces around.

Harold
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Old 14th April 2019
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Re: Help me understand Flash....

In the teaching of Granny category of tips the mechanicall shutter has to be used to get flash sync at higher shutter speeds.
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Re: Help me understand Flash....

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Originally Posted by DerekW View Post
In the teaching of Granny category of tips the mechanicall shutter has to be used to get flash sync at higher shutter speeds.
So it does! I'd forgotten that!

Anyway about these eggs?
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