OK I did a bit more testing. BTW the Flash sync is 1/200s on D90/80 and 1/250s on the D300, this might explain the difference

Anyway with a Nikon flash attached on both cameras you can in normal mode only go as high as the Flash sync speed, but with my Vivitar 285 I can go one stop higher, 1/250s D80 and 1/320s on my D300. So the wireless triggers most have a delay of app one stop

Pete

jonnyapple said:
That's interesting about the different sides. Do the shutter curtains go in opposite directions on those models? On the D90, the bottom of the frame is dark when you shoot too fast.

The same on the D80, but on the D300 it's the top and 1/250s is OK

Pete

BTW Jonny I am going to mode them a bit, I will add an antenna to the transmitter, I will post when it is done, some people claim you can double the distance, it will also be on my Flickr site

That's interesting about the different sides. Do the shutter curtains go in opposite directions on those models? On the D90, the bottom of the frame is dark when you shoot too fast.

You know Jonny I thought for sure that I was OK at 1/250s sync speed. So I tried again and for some reason on my D300 I OK at 1/250s but 1/320s is to fast. But then on my D80 there is a difference and what you have found I found too, now 1/160s is OK but 1/250s is to fast. Funny thing is that black out is also a different end of the exposure. The D300 blacks out at the top and the D80 at the bottom

Pete

I have a little update on these ishoot triggers. Like I say, I bought the ones with receivers that have a hotshoe (well, two each actually) and then a 3.5mm jack. The instruction manual says something like "1/500s sync speed (depends on camera)." I tested where the cutoff is for my D90, and it looks like the best you can do is about 1/160s—anything faster and you get catch the shutter half open with the flash. Switching to rear curtain sync didn't change anything, either (does that only control the in-camera flash?).

I thought it might be a delay in my studio lights (alien bees B400), so I tried firing an SB-600 set to manual on the ishoot's hotshoe and got exactly the same results.

This isn't a limitation for me since I won't need shutter speeds faster than that, but I thought I'd share just in case anyone is planning on using these things to overpower sunlight or something. These are great little triggers!

Yes it is a little screw on a Flash shoe from an old flash bracket

Pete

heartyfisher said:
Picture worth a 1000 words ! whats that little red bit at the bottom of the flash. did you make that ?

It is a flash shoe from another flash bracket, and like Niko kindly explained the red thing is the screw that holds the flash in place.

The bracket was made from from a metal plate, bolt, and couple broken flash mounts that fits on studio light stands, the idea is to get extra power or have each flash run at less power and to have the flashes aim at the middle of the umbrella

Pete

That's a little screw that secures the flash to the hot shoe and keeps it from falling off.

Picture worth a 1000 words ! whats that little red bit at the bottom of the flash. did you make that ?

Here is how I use the IShoot receiver on my Studio Lights and Regular Flashes:

Studio Light with pc to 3.5mm sync cord:

Two Flashes on home made flash bracket with pc to pc sync cord, I have other brackets for just one flash with or without the use of umbrella

Hope this help if you want to figure out how to use wireless flash triggers

Pete

They are all none TTL incl the regular pockrtwizard, but pocketwizard does have a TTL mdel almost ready for sale for Nikon, had one for Canon since last year. The pocketwizrds are $200 per unit, so to control 2 flashes is $600.

I you can afford it, I would wait for the TTL model, this will also give you highspeed sync to your Nikon Flash

Pete

To be clear, all of these are non-ttl right?

is the main difference between these and pocket wizards the lack of TTL, or am i missing another factor.

I was looking at these on ebay and the number of choices surprised me. thanks for the info!

But I was saying you won't need PC anywhere, chancetlu.

The ones you have pictured have PC out, Pete, but the ones I bought (same brand) have 3.5mm out and come with a 3.5mm-3.5mm dual-sided plug. I'm just doing my part to kill the PC connection like strobist.com suggested. ;-)

Now this trigger can be used both for studio lights and regular flashes

Pete

I use these PC to 3.5mm sync cords, can be bought on Ebay for $3.00

Pete

Oops, like I said, I am new at this studio stuff. Is there a way to convert the 3.5mm to PC or is there a specific trigger set that uses 3.5mm that are relatively cheap. Its an extra 100 USD for the IR transmitter to use with the strobes.

chancetlu, those MultiBlitz lights don't have a PC input, and neither do the alien bees. It looks like it's 3.5mm like the bees have (see my comment above).

nevermind, answered my own questions. http://www.adorama.com/NKAS15.html The hotshoe to pc adapter.

Question from a noob...how would the IShoot work on a D90 since I do not think the D90 has a PC Sync port.

Your style of cactus are better by far than the V2 that I had to begin with, they look a bit like the Ishoot that I just purchased
Thanks for sharing and I hope that you have fun with your Triggers, I actual think they a blast to use and always thinking of neat ways to use them

Pete

I have been using the cactus V4 Trigger and receivers for about a year now, they have never failed however I can say they are not the best build quality so you have to be a little careful with them, they battery door on the receivers is not the best. I have used them indoors and outdoors and they have preformed each time.

haha, poor poor assistant.

Yes the flash inside it's custom housing is just outside the frame to the left.

Thanks for the review, Pete. I ordered some of the ones with a hotshoe and a 3.5mm out today because I've been looking for a non-optical way to trigger my studio lights (3.5mm input) now that I don't have a PC out on my camera. I also looked at pocketwizard but I wasn't going to pay that much money. I love this forum.

Wow Niko neat stuff, where did you find that, is there a link to more information

Pete

BTW do you agree that the flash is the light source that looks like a sun from the left