[meteorite-list] Meteorite Photography (Must read!)

From: Dark Matter <freequarks_at_meteoritecentral.com>
Date: Wed, 27 Jan 2010 09:37:06 -0700
Message-ID: <822da19a1001270837o7a38cb98p4be9e086fb666762_at_mail.gmail.com>

Hi All,

Actually there is a further concern here. Although when a lens is
stopped down to its max it does have the greatest depth of field, but
it is also not at its sweet spot for sharpness. Usually a stop or two
less than max provides the sharpest image the lens is capable of. Here
is more about this:

http://www.bobatkins.com/photography/technical/diffraction.html

Best,

Martin



On Wed, Jan 27, 2010 at 7:27 AM, John Gwilliam <jkg2 at cox.net> wrote:
> Al is right on this one. ?The higher the F-stop number, the greater the
> depth of field is, i.e more of a three dimensional object will be in focus.
> ?The drawback to this is less light enters the lens thus requiring a longer
> shutter speed. ?And, if your not careful, a background that is too close can
> be in focus as well. ?There are many different ways to take good quality
> pictures of meteorites, ?experimentation is the key.
>
> Best,
>
> John Gwilliam
>
> At 06:50 AM 1/27/2010, al mitt wrote:
>>
>> 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" <erikfwebb at msn.com>
>> To: "meteorite-list" <meteorite-list at meteoritecentral.com>
>> 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.
>>
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>
> Regards,
>
> John Gwilliam
>
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> and go through life thinking they hit a triple.
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Received on Wed 27 Jan 2010 11:37:06 AM PST