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Is it possible to get perfect focus with autofocus in the dark (not pitch black) but not enough for the autofocus to work perfect to get the sharpest focus? I've done a experimental shoot on this a month or two ago and didn't come out as I wanted on sharpness but I assume it was because I was at the widest aperture levels 1.8 on my 50mm and learned later if I close my aperture a bit more like 2 or 2.8 which will ten force me to shoot in a higher ISO sadly.
Besides what I've mentioned above, is there other techniques I could try and keep my ISO lowest (100 is always my goal, shooting portraiture, still not moving subject), and shoot in the dark? Here's the series set on my flickr - http://www.flickr.com/photos/chrisad...7627536169408/ ![]() Ash Amore - "Night" 10 by Chris Adval, on Flickr
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Chris Adval: Learning Model Photography Website & Blog | Facebook Fanpage | Facebook | Twitter | Flickr | 500px | Gear Page | Model Mayhem Profile | Like my portrait/model photography critiques? Want more or one of your own? Submit some photos to me here and it will be featured on my blog! | Want your photos get Honest Constructive Critiques in Model Photography? Check out my Flickr Group here! |
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Also keep in mind that if you are using the Canon 50mm F1.8 it is not all that sharp around wide open.
These guys use the torch technique to both illuminate the subjects for focussing and the image capture (long exposures). ![]() Why not mount a tourch on a stand (cheap tripod?) or held by another person, and use it just for focussing. The as soon as you get focus just shoot. The relatively small amount of light put out by the torch will not make any difference.
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Flickr stream. http://www.flickr.com/photos/34094515@N00/ 500pics stream http://500px.com/Richard_Taylor |
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Chris Adval: Learning Model Photography Website & Blog | Facebook Fanpage | Facebook | Twitter | Flickr | 500px | Gear Page | Model Mayhem Profile | Like my portrait/model photography critiques? Want more or one of your own? Submit some photos to me here and it will be featured on my blog! | Want your photos get Honest Constructive Critiques in Model Photography? Check out my Flickr Group here! |
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Obviously, when shooting wide open, or near wide open, your DOF is extremely thin. Any slight movement by you, or your subject, even if you were able to autofocus using some light source to help will result in an unacceptably focused image. I know this doesn't answer your question, but shooting with wide apertures is probably adding to your problem. How about use of an assistant? They use a flash light on the subject off to the side, you quickly autofocus, they turn off the light, and you quickly grab the shot, but it must be clear that there can be no movement by you or the subject in that brief period.
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Vince "...the law of unintended consequences, sometimes, you get a truly memorable photograph" Gear: Canon G2, Canon 20D, Nikon D300...bunch of lenses http://www.flickr.com/photos/20127329@N06/ www.montalbanophotography.com Last edited by autofocus; 11-16-2011 at 12:54 PM. |
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