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SCL Photo Podcast 43: M42 Lens Adapter and Long Exposure Assignment

SCL PodcastA short chat about the M42-Canon EF Lens Mount Adapter I got the other day, and all about our new May / June Assignment, "Long Exposure".

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Our Flickr Group.

Cheers, Rob.

Reader Comments (2)

Hiya Rob,

Good podcast as ever.

Be interesting to see your results with the M42 lenses, I shall keep an eye out.
(Oh, how did we ever manage with stop down metering in the past?!)

Just something to add to your long exposure discussion. You could always use 'shorter' exposures and average them together post production. If the slowest shutter speed you can manage stopped down and lowest ISO is say 1/25th of a second - this is usually slow enough to show moving water as a blur, but not enough to produce the 'candy floss' look. If you take several exposures however, (top 3 function or continuous shooting on the Fuji 5700, continuous shooting on a dSLR), you'll now have several exposures with the water in different 'movements'. Use the layer functions in photo/paintshop/gimp etc. and alter the opacity to show each of the images through or use something like CombineZM, (free software!), and utilise the 'image averaging' function. Because the water would be in different 'movements' on each of the 1/25th second example exposures, the averaged version would give that 'candy floss' look.

More than that, it's actually better than a typical long exposure. Noise is far less apparent on digital images and due to the averaged shorter exposures the 'candy floss' look is more pleasent than a typically long exposure.

I used to do the same with film - if 30 seconds would give me the desired 'look', I would use say three 10 second exposures or even fifteen 2 second exposures on one frame of film. (Accounting for reciprocity failure which thanks heavens you don't have to worry with on digital!)

The handy thing is that you could get away with whatever equipment you have to hand, (even none if your aperture and ISO can give a long enough exposure), and even circumvent technical issues such as the fuji's maximum shutter speed of 4 seconds.

You won't however be able to achieve true 'ghosting' effects and trails that a long exposure can give but is handy to know, (and just as apt for painting with light etc.)

Anyway, see you on flickr,


May 4, 2009 | Unregistered CommenterVictor

Hi Victor,

Great points, I'll have to have a go at that - brilliant stuff!

Cheers, Rob.

May 4, 2009 | Unregistered CommenterRob_Nunn

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