I own a Sigma EM140 Macro flash and have just bought the Nikon D200, however the flash does not fire with this camera – the rear display remains lit and flashes on and off. It works ok on my other Nikon cameras. What should I do?

Your flash requires an upgrade to fully function with the D200, we can carry out this modification. If your flash is under warranty we will carry out the service free of charge, if not, the cost will be either one of the following; If you bought the flash from new and you can provide proof …