Rear Curtain Flash Sync
Derek Smith • 11 August 2020
As promised, I’m writing this post on the subject of rear curtain flash sync.
The very first thing that needs to be borne in mind is that the use of flash in photography, and this applies to on-camera, or off-camera flash, is that the pulse of light from the flash will “freeze” movement, or action.
Normally in flash photography the light from the flash is synchronised to fire when the shutter first opens, this synchronisation is linked to the first, or sometimes called the front curtain opening to expose the sensor, or film, the shutter speed is normally relatively fast, typically 1/60 sec, and the second, or rear curtain closes after that time.
For creative photography purposes the flash can be synchronised to the second curtain shutter, or rear curtain, freezing any action, or movement as the shutter closes. The exposure time can be set much longer, and the aperture stopped down, with the ISO set to a fixed low value. In the case of the doll on a stool photo, the ISO was set at 200, aperture at f/7.1, and shutter speed of 4 seconds, by using a zoom lens, and zooming in, and out during the exposure creates the blurred effect, and the image of the doll is “frozen” superimposed on top of the movement.
Rear curtain sync, also known as “dragging the shutter” can be used creatively in a number of situations, using flash, street scenes at night as a vehicle passes, weddings, light trails, and dancing under lights are just some examples.
Setting the camera, and flash to rear curtain flash will vary greatly between different camera models, some Nikon cameras have a flash menu button to access the flash menu. Some camera manufacturers proprietary flash speedlights have the setting on the speedlight menu, and on other cameras you may have to delve into the menu, for Olympus cameras select “Slow 2” from the flash settings on the control panel to enable rear curtain sync.
Perhaps some of you may like to try this technique and share some photos on the blog page.
Enjoy your hobby and stay safe.
The very first thing that needs to be borne in mind is that the use of flash in photography, and this applies to on-camera, or off-camera flash, is that the pulse of light from the flash will “freeze” movement, or action.
Normally in flash photography the light from the flash is synchronised to fire when the shutter first opens, this synchronisation is linked to the first, or sometimes called the front curtain opening to expose the sensor, or film, the shutter speed is normally relatively fast, typically 1/60 sec, and the second, or rear curtain closes after that time.
For creative photography purposes the flash can be synchronised to the second curtain shutter, or rear curtain, freezing any action, or movement as the shutter closes. The exposure time can be set much longer, and the aperture stopped down, with the ISO set to a fixed low value. In the case of the doll on a stool photo, the ISO was set at 200, aperture at f/7.1, and shutter speed of 4 seconds, by using a zoom lens, and zooming in, and out during the exposure creates the blurred effect, and the image of the doll is “frozen” superimposed on top of the movement.
Rear curtain sync, also known as “dragging the shutter” can be used creatively in a number of situations, using flash, street scenes at night as a vehicle passes, weddings, light trails, and dancing under lights are just some examples.
Setting the camera, and flash to rear curtain flash will vary greatly between different camera models, some Nikon cameras have a flash menu button to access the flash menu. Some camera manufacturers proprietary flash speedlights have the setting on the speedlight menu, and on other cameras you may have to delve into the menu, for Olympus cameras select “Slow 2” from the flash settings on the control panel to enable rear curtain sync.
Perhaps some of you may like to try this technique and share some photos on the blog page.
Enjoy your hobby and stay safe.
Louth Photographic Society

At our meeting last night we held a PDI (printed digital image) competition, with the categories of "Local Unedited", and "Open". As this was a members competition one of our members judged the competition, Tony Gaskins was our first judge for the "Local Unedited" category, these were .jpg images taken straight from the camera, without any editing, apart from the resizing for projection. Presenting an image such as this in a competition is quite a difficult task, the photographer has to ensure that the correct exposure is chosen, the composition, and subject matter has to be precise, everything done in camera. Normally for competition entries, a degree of post processing would be involved, simple edits like toning down highlights, or even removing extraneous objects from a scene, emphasising a moody sky, all not allowed. Tony Gaskins did an excellent job with his judging, providing clear and concise critique of the images presented, he "held back" 8 images for further consideration, awarding higher points, and finally choosing the top three placements. After the break it was Robin Begley's turn to judge the "Open" category, as these were post process edited images the standard was higher than the unedited images, but surprisingly not markedly so. Robin is potentially hoping to become a N&EMPF approved judge, and he had a different style, able to suggest edits that could have improved an image, again his critique was clear and concise communicating well with members. Robin chose 8 images for further consideration, awarding higher points, and finally selecting the top three placements. It was a fabulous, and interesting competition with excellent images, many thanks to both our judges, it's not an easy job, probably nearly as bad as being a referee in a football match!! Many thanks to both our judges, well done.

Last night Lee Dixon from Cleethorpes Camera Club gave his first ever presentation to a camera club, which we were privileged to view. His presentation consisted of portraiture, creative, and his genre of choice; wildlife. Lee is an extremely talented photographer, with a highly creative portfolio, his portraits are quite atmospheric, unusual, and capture the essence of the model, and scene. For Lee’s creative work, he buys props from charity shops, often very cheaply, reusing those props in various scenes. For his composite work he will often take one of his photos of a room, and blend it with a subject in Photoshop using “blend” modes. For wildlife he visited Lake Kerkini in Greece to photograph the Pelicans, if the sky is a little on the bland side, Lee will often over expose the image resulting in a striking white background to the subject. On safari in Africa Lee showed us some amazing images of the wildlife, the close-up images of elephants, the wildebeest migration, and this stunning image of a cheetah. Lee was ably assisted by Mike Bennett. More of Lee’s work can be found on his website: https://leedixonphoto.co.uk/ Lee his kindly given permission for his images to be used in this post. Many thanks to Lee, and Mike for an amazing evening.

Good Morning All Last week at the club we held our monthly PDI competition, with the categories of "Objects in the Air" and "Open", there was a very high-quality entry in both competitions and judge Mike Bennett had quite a job on his hands scoring the entries. Well, done to Dave Turner for first place in the Objects in the Air and Tony Gaskins for first place in the Open. All the results are on our website. This week, Wednesday 30th September, our speaker will be Lee Dixon from Cleethorpes Camera Club showing us his natural history, Creative and many other photographs he has taken. It will be the first time Lee has shown his photographs at our club. If anyone else wants to enter PDI's in the 2027 N&EMPF Exhibition, the deadline is this Wednesday at midnight. Harry is still taking entries for the PDI competition, with the categories of "Local Straight from Camera" (unedited .jpg), and "Open", to be held on Wednesday 7th October. Regards Graham

At the meeting last night Mike Bennett judged our competition with the categories of “Objects in the Air”, and “Open”. The standard of entries was excellent, and it gave Mike a tough task of judging the images, Mike gave some very good critique of the images displayed, the feedback helps members to develop compositional skills. Dave Turner was awarded first place for his image of the “Tiger Club Display Team” in the “Objects in the Air” category. Tony Gaskins was awarded first place for his image of the “Spectacular Rustgill” in the “Open” category.

Good Morning All, Last week at the club we watched the N&EMPF PDI Exhibition for 2026, it was a very good evening viewing very high standard images from all over the East Midlands. Dave Turner and I did manage to get images accepted; there is a full report on our website. This week, Wednesday 23rd September, we will hold our monthly PDI competition, with the categories of "Objects in the Air" and "Open", please send entries to Harry by midnight tonight. Harry is also accepting images for the PDI competition, with the categories of "Local Straight out of the Camera (only resizing permitted)" and "Open". Regards Graham

Members were shown the 2026 N&EMPF PDI Exhibition video last night with all of the accepted PDI images in the first part, and after the break the awarded PDI images. There were some stunning images on view, and Louth was successful in having 3 PDI images accepted, Graham Harrison with his image of a Stonechat, and Dave Turner with his portrait of Paul Rudd, and his monochrome image of Kings Cross railway station "Going Down". Overall it was a good inspirational evening.

Good Morning All Last week at the club members had 15 minutes to show what they had done over the summer. It was a very interesting evening with eight members taking part. There were many locations on show and as usual some excellent photography. There is a full report on our blog. This week, Wednesday 16th September, we will be showing the N&EMPF exhibition, this is part one showing all the PDI's that were accepted. This is the highest standard of photography we as individuals take part in as a club. Members sent around 50 entries but only 3 were accepted. If you are inspired to enter the 2027 Exhibition after seeing the show, I send the clubs entries and I can give you more information. Closing date is the end of September. The Maximum size for N&EMPF is 1600 x 1200 3MB sRGB Harry is still taking entries for the monthly PDI competition, with the categories of "Objects in the Air" and "Open". Harry did ask about what can be accepted, and we couldn't really say as long as it's an object in the Air. The best way is to look up the definition of an object first. Harry is also accepting entries for the Local and Open competition in October. Robin is going to judge the Open competition, does anyone fancy judging the "Straight from the camera" category? Regards Graham

The Louth Photographic Society has returned after the summer break. It was an incredible return, with members providing us with some stunning images from over the summer break. A full, and varied smorgasbord of well executed photos, many of us visited Whitby, the North Yorkshire Moors Railway, and further north images from Staithes, and Sandbanks. Tony showed us his long exposure minimalist calming coastal scenes, from the Lincolnshire coast, and Whitby.. Chris brought us some beautiful photos taken of local churches, many of which many of us have never seen. Now I’ve never really seen the attraction of an expensive Leica camera, but when Mark showed his photos from his visit to the German Leica factory in Wetzlar, I now understand, camera bodies, and lenses milled from solid blocks of aluminium, hand polished, hand finished lens glass, and textured leather applied to the camera body, not a robot in sight, just craftsmen, and women making a superb photographic instrument. Sue brought us “pink” ladies driving tractors to raise money for cancer research. Last but definitely not least Richard showed his monochrome, and infrared images of trees, his compositions, and photographic eye bring these tree studies to life, we appreciate them even if some judges don’t understand. Many thanks to all of those members who contributed.






