Jump to content
Sign in to follow this  
Meloco14

SP350 settings for use with Inon S-TTL

Recommended Posts

I just bought an Inon Z-240 to use with my SP350, intending to use their S-TTL setting. I thought it was going to be as simple as point and shoot, as long as my camera used its pre flash. I dove with it yesterday and all of the pictures were very underexposed. I am thinking somehow the S-TTL must not be working properly, due to some settings on the camera that aren't right. Does anyone use this combination and know what settings I need to use in order to get the S-TTL to work? Right now I use the camera in My Mode so I can manually set film speed and f stop, and the flash is set to internal plus external. Is there something that prevents S-TTL from working when the camera is in a manual exposure mode? Will it only work on Auto? Or is my flash setting in the camera wrong? When I fire the camera it does use a pre flash, but still S-TTL doesn't appear to be working properly. Any help is appreciated. Thanks,

Loren

Share this post


Link to post
Share on other sites

wow, if you are in grand cayman, go see Cathy Church at Sunset House. That's her favorite P&S and she knows it inside out. Scott

Share this post


Link to post
Share on other sites

It might be best to post a photo for analysis. resize it to 800x600 and post it here. Just off the top of my head I would probably set the flash for internal only if you're shooting wirelessly. Finally, if you can tell us a little more about your setup. IE..are you using a fiber optic cable?

Share this post


Link to post
Share on other sites

Yeah I can go to cathy church's and find out. I just figured someone on here should have the same setup and know what the settings should be. I will resize a few of the pics and post them. My setup is the olympus sp350 in a pt-030 housing, connected to the Z-240 type 3 via fiber optic cable. This is my first time using the S-TTL feature with the Inon strobe. I have previously used an older model Inon, set to Auto, and it worked perfectly. I decided to go with S-TTL because of it's very simple point and shoot abilities. As far as I understand it, the S-TTL uses the camera's preflash to determine the proper strobe output. So the camera needs to force flash, acting as it normally would without an external strobe. So the internal only, or internal plus external settings should work, I assume. The only thing I am not quite sure about is if this whole system will work with the camera in My Mode, where I am controlling the speed and f stop. Maybe in this mode I am indirectly controlling the output of the camera's internal flash, thereby controlling the strobe, and rendering ineffective the S-TTL. But I'm not sure, so if someone familiar with this setup could confirm/deny it, it would help.

Edited by Meloco14

Share this post


Link to post
Share on other sites

Here are some examples of pictures taken while in S-TTL and My Mode on the camera. The speed and f stop's varied, but should have been pretty close to ideal, and I think it's apparent that the strobe isn't firing enough regardless of the exact settings on the camera. These were all close shots. The royal gramma was in macro mode and about a foot away. The anemone was also in macro and about 6 inches away. The grouper was in normal mode and about a foot and a half away. Also I should mention that later in the dive I went back to what I was used to. I put the strobe in Auto and the pictures turned out fine. So there is definitely something with the S-TTL and not the strobe or camera. I just don't know if I have it set up to work properly.

post-22775-1234332394.jpg

post-22775-1234332412.jpg

post-22775-1234332425.jpg

Edited by Meloco14

Share this post


Link to post
Share on other sites
Here are some examples of pictures taken while in S-TTL and My Mode on the camera. The speed and f stop's varied, but should have been pretty close to ideal, and I think it's apparent that the strobe isn't firing enough regardless of the exact settings on the camera. These were all close shots. The royal gramma was in macro mode and about a foot away. The anemone was also in macro and about 6 inches away. The grouper was in normal mode and about a foot and a half away. Also I should mention that later in the dive I went back to what I was used to. I put the strobe in Auto and the pictures turned out fine. So there is definitely something with the S-TTL and not the strobe or camera. I just don't know if I have it set up to work properly.

 

Hi Meloco14,

 

I have pretty much an identical setup to yours - same camera, strobe and macro conversion lens.

 

My experience with S-TTL was similar to yours but so I just gave up on it fairly quickly. I now use both the camera and the strobe in manual mode with pretty good results. If you are interested in experimenting with this, read the advanced manual for the strobe, it has an Olympus compact camera settings example, which also applies to SP350.

 

If you want images examples let me know.

 

thx

 

DK

Share this post


Link to post
Share on other sites
Sign in to follow this  

Sponsors

Advertisements



×
×
  • Create New...