I contacted Amazon regarding the problem with my flash and they were very accommodating. They issued a return authorization. I decided to give the Yongnuo another try. Maybe the one I got was just on the extreme end of the bell curve.

Amazon even picked up the tab for next day shipping on the unit I ordered.

That was the chance I took. I did see many positive Yongnuo reviews and that is why I took the plunge.

I've started working the return/repair/replace process through the seller I purchased the flash from on Amazon. I'll see how that goes.

When I first encountered the problem I made sure the batteries were fully charged and re-ran the tests.

I did get a response from Yongnuo this morning. Here is what they wrote.

"Dear uSER，

Thanks for contacting us!
According to your description, we kindly suggest you to set your speed-lite to M mode, flash output power from 1/128 to 1/1 and take pictures. Check if the flash intensity changes. If not, it indicates that the speed-lite is defective, please contact the seller for refund/replacement or ask the seller to help you to send it back to YONGNUO for maintenance.
Thank you very much for your great support for YONGNUO products! If you have any other questions, please feel free to contact us again.

Best regards,

YONGNUO"

That doesn't sound very promising to me. If I can't send it back for a repair, refund, or replacement then I guess I'll be stuck with it. I should have saved my pennies and bought a Nikon Flash.

I've attached some shots I took about five minutes ago. The first shot was taken with the camera in aperture priority mode. The second shot was taken with the camera in auto mode.

For comparison I attaches a third shot I took in May at my daughters wedding shower when the camera/flash was working fine. In all cases the flash was set to i-TTL mode.

After you asked the question I took a look at the exif data and I noticed that the attribute 'light source' was present in the good shot but was absent in the problem shots. I don't know what that means.

This is my first attempt to upload some pictures. Let me know if there is any problems.

Thanks
Joel

Problem shot in aperture

(Download)

Problem shot in auto

(Download)

Good shot

(Download)

I thought the same thing. I played with those setting also and it didn't make any difference. The flash will work good in manual mode, but sometimes I just want the automatic.

I sent an email to Yongnuo service explaining the problem. I'll wait a while and see if they respond.

Hey everyone.

Lately I have been experiencing a problem with my YN-568EX Flash on my Nikon D7000.

I purchased the flash in April of this year and for a while the combination was working great. Back in May I was taking pictures with the flash mounted on camera. The flash set to i-TTL mode and the camera in aperture priority mode. I was getting good results indoors and out. Last week I wanted to take some pictures indoors with the same camera and flash configuration and the pictures were coming out dark. It appears that the flash is firing before the shutter opens. I tried changing settings on the flash and camera but it made no difference, the pictures were still coming out dark.

For some tests I used the cameras built in flash, which worked fine, then I mounted my Nikon SB-400 flash and that worked just fine. I've come to the conclusion that something went wrong with the YN-568EX, but before I try send it back I want to ask if anyone in this forum has some other suggestions or thoughts about my flash problem.

Thanks
Joel

Correct!

Gene, that is correct.

I’m not qualified to say what the perfect system would be for you, but I can say that I do the things you say you want to do, storing, organizing photos and light post-processing, on a Dell Inspiron 3520 with 6GB of RAM, an external 20 inch HP 2009 monitor and a Toshiba Canvio Connect !TB Portable External Hard Drive.

I've used them quite a bit and they worked fine, but sometimes the little locking lever is a pain. I'll have it in the un-locked position then as I'm inserting the card/adapter into the device the lever slides to the locked position.

Never say 'Hi Jack' in an airport.

I've read mixed reviews of his 'Understanding Exposure' book. A couple of weeks ago I was looking around on Amazon and was able to get a new paperback third edition for under $7.00 with shipping. So I figured why not. I've only read through the first couple of chapters, but I found it useful. So far it has covered the very basics, but there are a few things I picked up that I either for got about or chose to ignore many years ago.

Really nice shot, good luck with your new camera.

Such precious pictures.

Very cool