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May 22, 2012
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Error on your site
by: Anonymous

Error on your site:

On page http://www.dptips-central.com/creative-camera-controls.html

You have a depth-pf-field chart about half-way down.

This chart says:

GREATEST Depth of Field given when:
* SMALL aperture size (f2, f4)
* CLOSER to subject
* SHORTER focal length of lens

LEAST Dept of Field given when:
* WIDE aperture size (f16, f22)
* FURTHER AWAY from subject
* LONGER focal length of lens

You have the f-stop examples backwards (f2, f4 are WIDE not SMALL; f16, f22 are SMALL not WIDE)

Also closer to the subject *decreases* depth of field, further away from subject *increases* depth of field. You have these backwards as well.

The text in the article looks correct, only the chart is incorrect.

Answer:

Hi and thank you for spotting and pointing out the error in the table! I have now amended the details in the table to match the text in the article.

All the best and good luck in your photography,
Gianfranco

DPTips-Central.com

Nov 04, 2011
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Shutter Speed Question
by: Bill

First of all, thanks for your great tips and well written articles. I am new to photography so I may be completely wrong here but wanted to verify so I can better understand the concepts.

On your shutter speed page (http://www.dptips-central.com/shutter-speed.html), you mentioned the following statement: "Please note that as the number of the denominator grows larger -
2, 4, 8, 15 etc, the speed actually decreases. This means that less light is allowed to pass through leading to decreased exposure."

Did you mean to say "the speed actually increases" or "the exposure actually decreases"? I understood everything you have said up to that sentence and I got confused so I was just looking for some clarification.

Thanks again,
Bill

Answer:

Hi Bill,

And thank you for getting in touch. Your understanding is in fact correct - (as the number of the denominator in the shutter speed grows larger - 2, 4, 8, 15 etc, the speed of the shutter actually increases which leads to decreased exposureas the number of the denominator in the shutter speed grows larger - 2, 4, 8, 15 etc, the speed of the shutter actually increases which leads to decreased exposure. Thank you for spotting and pointing out the error in the article.

All the best and good luck in your photography,
Gianfranco

DPTips-Central.com

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