stump4545 Posted March 21, 2012 Share #1 Â Posted March 21, 2012 Advertisement (gone after registration) I will be using the 24d flash with a 21mm lens for group indoor shots. Â any pitfalls to look for when using this combo since i know the flash does not accommodate 21mm lenses or will i be good to go? Link to post Share on other sites More sharing options...
Advertisement Posted March 21, 2012 Posted March 21, 2012 Hi stump4545, Take a look here Leica 24d flash and 21mm lens. I'm sure you'll find what you were looking for!
giordano Posted March 21, 2012 Share #2 Â Posted March 21, 2012 The SF24d with wide-angle diffuser is claimed to cover at widest a 24mm lens, and it's unlikely to provide perfectly even illumination across that field. So you can expect dark edges with the 21mm lens. Â Add to that the vignetting that is natural in a 21mm lens and you'll find that with direct flash your pictures have very dark corners. If that matters, you'll need to use bounce flash or an additional diffuser - for which I'd want to use a much more powerful flash unit. Â If the pictures are going to be important, there is no alternative to experimenting in advance until you find a technique that gives the results you need. Link to post Share on other sites More sharing options...
budrichard Posted March 21, 2012 Share #3 Â Posted March 21, 2012 Why would you ask this question when you know the answer? Hope will not make the combo work. I have 24D and 21mm f2.8 ASPH, I have to use a Metz unit on a handle flash bracket to make it work. How are you going to mount the 21mm finder and flash? There is no double hot shoe out there, only double cold shoe. You will have to purchase a Metz handle ubit that has 21mm coverage and then the combo works ver nicely, great for interior closups.-Dick Link to post Share on other sites More sharing options...
jpattison Posted March 21, 2012 Share #4 Â Posted March 21, 2012 We are assuming you are shooting on a full frame Leica? Â If not, it might illuminate enough on an M8. Â John Link to post Share on other sites More sharing options...
lars_bergquist Posted March 21, 2012 Share #5  Posted March 21, 2012 You will have to bounce the SF24D. And you can do it. There is a Nissin SC 001 extension cord that has a shoe – even a hot one, though this is irrelevant here – on top of the camera-side connector. Just right for the finder.  And in rooms of normal size the flash is powerful enough if you are willing to use an ISO of 500 or 640.  Flashpowder is unfortunately not available any more. Any attempt to use it would probably be seen as terrorism.  LB Link to post Share on other sites More sharing options...
stump4545 Posted March 22, 2012 Author Share #6 Â Posted March 22, 2012 thank you for the help Link to post Share on other sites More sharing options...
stump4545 Posted March 22, 2012 Author Share #7 Â Posted March 22, 2012 Advertisement (gone after registration) btw. is it ok to use f1.4 stop when using the 24d and the M9? Â thanks Link to post Share on other sites More sharing options...
lars_bergquist Posted March 23, 2012 Share #8  Posted March 23, 2012 btw. is it ok to use f1.4 stop when using the 24d and the M9? thanks  Why not? I can smell trouble only if you are using a very high ISO at close range, requiring a flash duration that is too short for the gun. But you are not burning irreplaceable Kodachromes anymore. You have a monitor and a histogram. Do the experiment, for chrissake! It won't cost you anything and you can do it tonight in front of your bookshelf.  It will reveal of course that the lens – any lens – vignettes more when wide open, less when stopped down. But that is true for continuous-light exposures too.  LB Link to post Share on other sites More sharing options...
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