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The Rule of Thumb
"When using flash, to change the exposure you adjust aperture. Adjusting shutter speed will change ambient light exposure."
Changing Shutter Speed
Your camera’s max flash sync speed is probably somewhere around 1/250th of a second (check your manual for yours). This means that to sync up with the flash correctly, you can’t go any faster. Now compare that with the duration of a flash burst, which depending on the power you’ve chosen, could be somewhere in the 1/4000th of a second range.
So just stop and think about this for a second. Unlike ambient light that builds up on the sensor the whole time the shutter is open, flash light is constant no matter what the shutter speed. The only way to grab less light out of that flash burst would be to choose a speed faster than the burst. But you’re constrained by the max sync speed. So you could change the shutter speed all day, speeding it up, but you’ll always grab the same amount of light from that flash.
The bottom line is that the shutter speed will have no affect on the exposure of the area of your image that’s lit by the flash. Consider the image below. The flash power wasn’t changed, and the aperture was kept constant. I only changed the shutter speed. As you can see, the images all have the same exposure. Had I gone slow enough, I would start to pick up ambient light from the room.
Changing Aperture
Just as a refresher, when you change the aperture, you’re changing the size of the hole in the lens that allows light through. A lower aperture number means the hole is bigger, letting more light in.
So now that we know you can change the shutter speed all day long with no effect, the only other setting to play with is the aperture. If you want to change the exposure of a flash lit photo, simply adjust the aperture setting. A lower number makes your image brighter and a higher number makes your image darker. Take a look at this next series of images, all shot at the same shutter speed, but the aperture was changed.
Simple huh? Just remember that when you change aperture, you’re also changing the depth of field. So if your intention was to get a shot with someone’s face in focus and their body further away out of focus, changing the aperture to a higher number will bring their body more into focus. In this case, you’re better off adjusting your ISO setting, adjusting your flash power, or moving your flash further away.
Info found on Sublime-light.com
Here's with a gel attached, and you can also see how I keep my gels. Those are a bunch of extras, just various colors and scrims. I keep the CTO and plusgreens and other often-used ones in my camera bag. They're all on individual clip-rings you can find at any office store.
Photo of side flashing for GSE Roof integrated system with Sunrise 250W all black panels on a slate roof by Graham Litchfield of Charbel Renewables www.charbel.co.uk
Pentacon 50 f1.8. Used my nissin i60a and some HSS. Took a few tries before I was satisfied. Also I had to stretch to get my camera close enough!
Flash Gordon / Heft-Reihe (Piccolo-Format)
> Das Wunderhorn von Pasturia
Zeichner: Dan Barry
Zeitungsstrip der Hamburger Morgenpost
(Streifen vom 3.11. - 6.12. 1952)
Verlag Gabriele Reuß (Würzburg / Deutschland; 1988-1994)
Copyright: 1988 by King Features Syndicate
ex libris MTP
After looking at the first edit a few times I was'nt happy with the contrast in the wall behind her, so in this edit i've upped the contrast and clarity in the wall.
For the origional shot i used the onboard flash defused with kitchen roll, a trick my college tutor taught me. I'm buying an sb900 in the next week or two so i'm learning allot about off camera flash at the min.
I was going to replace the pic but could'nt bring myself to do it for some reason.??
Speed notches at the top, Charging Lever at 2:00, Flash Terminal at 4:00, and Cable Release at 10:00. The problem is with the Cam Follower at the 6:00 position. I love simple construction. If not for taking photos, and a slightly recalcitrant lens element, I wouldn't have had ten minutes into this job yet.
Camera: Pentax K1000
Film: FujiFilm Superia X-tra 400 ASA
September 2011
Flash! in a completely dark room. I guessed the focal length and aperture and shot it on bulb with my new favourite bulb flash technique: click-flash-release all in about a quarter of a second.
I had a bit of a battle with my scanner which tried to colour correct the image away from red.
I got o-flash(ringflash adaptor) to test from my work buddy. This adaptor was originally made for 430ex(??) but the size of sb-600 is quite same.
...My first intrest was to test how enormous light loss this adaptor has.... quite big as you can see... even +4 ev in lr didn't help(not shown) . Maybe the grey cardboard reflector inside the adapter doesn't work so well :)
Camera: iso 100, f22, ca.35mm
Flash: 1/1, 35mm manual setting(sb-600)
distance from wall ca. 2m
This switch is used to put the microcontroller in flash mode, so a new version of OnStep can be uploaded to the controller. It is now in run mode (switch to the right).
Canon rangefinder with IR flash bulb. Canon was my first passion for vintage flash photography. This is the first picture in a row of 10, showing Canon cameras with all sorts of flash bulbs.
The background is a 5cm-graduated cutting board. Hopefully you can work out the approximate sizes in Imperial from that.
The most difficult bit is getting the "tail" to have a tight fit in the hotshoe because this is what ensures it stays on the camera. Experiment on some scrap binder plastic first.
This FTR is in an ATSI MST 700 tester.
www.atsi-tester.com/index.php/products/load-switches-rela...
When you hear the click, the contacts switch, and the LED turns on and off.
from left to right Vivitar 3900, Nikon SB80-dx, Sunpak 611, Sunpak 522. At top Vivitar 5000
strobist info... electrons shot at nearly the speed of light into a rotating disk of heavy metal which creates photons of x radiation passed through the objects showing up the various densities within as various shades of black and white.
Picturesque Sprotbrough Flash is one of the richest wildlife sites in South Yorkshire. A mosaic of open water, wetland, woodland and limestone grassland, the site offers a year-round treat for wildlife enthusiasts.
Last Sunday I spent the day with master flash man Adam Bronkhorst, mastering the art of creative flash lighting.
Time lapse photo, I was bored so i messed around with a flashing light thingy majigger, this is the product hahaha :)
[Flash Work] Hold
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© Donfer Lu (Taiwan) All rights reserved.
You may not use my photographs on any web page, publishing, storing, commercial or non-commercial, for profit or non-profit, without my written permission.
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"Friends uke nited" flash mob in Gloucester city centre this afternoon. They were introduced by Gloucester's Town Crier (and world's loudest town crier!) Alan Myatt and started off by playing 'Jingle Bells', getting everyone in the Christmas spirit.
Camera: Sony a55-sltv
Lens: Tamron 28-75mm f/2.8
Light source: Two Nissin Di866 Mk II flashes, one behind fishtank bare w/ folder as a "gobo", one in a beautydish above the tank and slightly camera right.
Fishtank: $15 on craigslist
Lightbulb: $1.67 at Walmart
Food coloring: Don't remember, don't care. :)
Kickass photo: Priceless.