For those interested, and to close out this post with an update. This is the same car, camera, lens, flash, but the result of post-processing 6 images with CombineZP. However, as I have discovered, one virtually requires a supercomputer to do this kind of work. It took some three hours on an older computer, but still not a wimp of a machine. Can't imagine the processing time for a dozen 5MB or so images! Hope one of our assignments includes macro work, a whole new world of photography! Amazing, this was not even possible before the days of digital images....
Group, need technical help! This is a flash photo of a (obviously!) model car. There must be something I am doing wrong, as I cannot get a quick shutter speed when in Av (aperture priorty) mode. The flash goes off, but the camera acts as if it doesn't know the flash is the lighting source, and takes a long exposure. So, I put the camera on P (semi-auto), all works correctly, except the camera decides my aperture (f 4.0) and alas, poor depth-of-field. Of course if I backed way away and cropped, could probably do the trick, but no cropping here, and not desired. Most likely some dumb operator error. Adam, I believe you are a Canon person. Any ideas? Also, has anybody worked with CombineZP or Zerene? Both are software to combine multiple images shot at slightly different focus distances to solve such problems as this.
Jim I feel your frustration. I had the same thing happen to me tonight. What I did was switch to manual, and then set the aperture and shutter speed. What aperture are trying to use? I have noticed that in aperture or shutter priority the camera doesn't seem to factor the flash into the equation.
ReplyDeleteGood suggestion. Will try manual, albeit not tonight, sleep beckons and the gear is put to bed also. To answer your question regarding aperture, f16 or even f22 within Av mode to obtain at least a smidgen of DOF with these close shots. Will probably also play with CombineZP, as it is a free download.
ReplyDeleteI am curious to hear how this turned out for you. My guess is at f16 you will need a fairly slow shutter speed. I would start about 1/50 and adjust from there.
ReplyDeleteI was reading a Canon book and may have found something that might help but I can't explain it so I will copy the page and bring it by.
ReplyDeleteAdam, have downloaded CombineZP, so hope to over the weekend set up a tripod and take multiple exposures (10 or so) at very slightly different focus distances and combine. If successful, will post the photo on this site. As far as the camera refusing to do what I wish, possibly Shawn has found the answer? It is as if the camera ignores the presence of the flash in Av or Tv mode. Have tried two different Canon flash units.
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