AL & John- More depth of field at higher F-stops yes, but you loose sharpness with each f-stop. Therfore, combining a series of F2.8 shots into one picture will be sharper then shooting at F22. This is proven and published in several canon and nikon articles. Especially when you have a 10-24mega pixel camera with highlight tone priority on with a good processor.
Rob- An interesting fact that ties in with when you say "a good lens" is that lenses with the wider minimum apertures are sharper at higher f-stops than lenses that don't as wide of a minimum aperture. For example: An F1.4 lens at F3.5 is sharper then a F2.8 lens is at F3.5. Chris is very right! I use my F1.8 50mm at a minimum of F2.2-F2.8 for that very reason. It's often in Vincent Laforet's Blogs. Martin is right about extension tubes! I also have the Sigma 70-300mm which, with the flip of a switch, can be used for macro between 200mm and 300mm. That is the sharpest F3.5-5.6 lens I've ever seen or used. I can't believe I only payed $200 for it! It's a challenge to flip it to macro, then put both of my extension tubes on it. It's almost a microscope! Matteo, dont mention Zeiss lenses. I'll burst with jealousy! You are spoiled! [Erik] > From: [email protected] > To: [email protected] > Date: Wed, 27 Jan 2010 08:50:27 -0500 > Subject: Re: [meteorite-list] Meteorite Photography (Must read!) > > Hi Erik and all, > > I'd think just the opposite would be correct. A higher f-stop (f 22, 18 > etc.) would create a better depth of field and the more open your iris is on > your camera (lower f stop, 1.8, 2.0 etc.) the less focused your items would > be. I think you just stated it backwards. Best! > > --AL Mitterling > Mitterling Meteorites > > ----- Original Message ----- > From: "Erik Fisler" <[email protected]> > To: "meteorite-list" <[email protected]> > Sent: Tuesday, January 26, 2010 3:51 PM > Subject: [meteorite-list] Meteorite Photography (Must read!) > > > > The third thing is auto-blending. For those of you who have SLR's you will > notice that shooting at a higher F-stop like F1.8 or F2.8 is a lot sharper > than shooting at a lower F-stop like F22. The problem is, you might have to > drop your F-stop to make sure the whole meteorite is in focus. > > > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
