cony25 wrote:
This is exactly what happened.... and I could only back up until I hit the wall.
So the question, how to synchronize the shutter speed with the flash?
Ok, the flash already seems to be synchronized or you would not get any light from the flash at all.
On most cameras 1/30 second exposure time is usually a workable shutter speed for synchronizing in an inside studio. Many cameras synchronize at faster speeds like 1/60, 1/125, or 1/250. These are quite useful when working outside and trying to mix sunlight with light from a flash, and might work on your camera.
Try them. You aren’t paying for film, so there is no cost. If you only see the light from your flash on just 1/2 of your picture, or less, the shutter speed is set too high.
With shutter speeds longer than 1/15 or 1/8 you can get roomlight adding to your exposure. This can change the color balance and contrast a bit, but is a technique to play with after you can dial-in your exposure. If your shutter is open a long time, you might be able to hear it.
All of your light control is going to come from opening or closing the lens aperture. These are the numbers known as f/stops. They may be marked on the lens or you may see them only through the viewfinder.
The sequence is usually something like 5.6, 8, 11, 16, 22. The numbers may go higher, or lower. The smallest number allows the most light to enter, the biggest number blocks the most light, so less gets in.
Whatever the number used on your overexposed pictures, you want to use one that is higher.
If you are at the highest number and still are getting overexposed pictures, then your camera is set to be too sensitive. You can change that.
The sensor in many digital cameras can be adjusted from a low number, like 100 to a higher number, like 25,000. These are called ISO numbers and are based on light sensitive films tested by the International Standards Organization many years ago.
Large strobe units such as you have were designed to work with film that was not as sensitive as modern electronic sensors can be. ISO 100 was common for films. Set your camera there to start. You’ll want to change it again ( for more sensitivity/higher ISO number) when you use the camera in roomlight. Some cameras ( like the one in my cell phone) automatically set the sensitivity. You need to turn this to manual and pick a number close to 100.
If the light has adjustable output, set it to 1/4 power or 1/8 power or less. If that is still too bright, move the light back.
If you can’t move the light back far enough you need to use a ‘light modifier’ which blocks some of the light. Two simple light modifications: 1) aim the light at a ceiling or wall and let the light ‘bounce’ off of that surface. 2) drape a white fabric between the light and the subject. A bed sheet works nicely.
In professional practice, using a bed sheet frankly looks tacky, so they make an umbrella frame with a piece of white fabric stretched on it. You can bounce the light off the inside of this photographic umbrella, or direct the light to go through it. Most studio strobe units have some way to mount to these umbrellas.
I toyed with the idea of buying a cheap (dollar store) umbrella and spraying the inside with white spray paint (also from the dollar store). I cut off the handle it fit on my strobe and bounced light as well as a photo umbrella. But the paint coating was stiff and cracked off of the fabric when I tried closing the umbrella—which made a mess.
In my studio I hung a curtain rod and bought cheap, sheer drapery liners. They served as partitions and privacy screens, as well as backgrounds, and (if I moved my lights) light modifiers.
Hope this helps.
Experiment a little more and let us know how it goes.
If you can attach a copy of one of your picture files ( good or bad) people here can give more directed advice.