Re: WA on Pocket Camera vs DSLR

[Kostas Papakotas <clenchedteethphotography@xxxxxxxx>]

hmmm

Roy it seems you are refering to the case of using 35mm lenses wiht the APS sized sensors. In this case you are right.

 

But what the article said was that using the APS censor (with an equivalent (focal disctance) to the 35mm format lens) does make of a grater field of view. It is pure mathematics and it has been covered in this list some years ago.

 

in effect DOF is related to focal disctance, subject distance and format diagonal in pure mathematicla terms. And I have made a table for various combinations that I still keep in my cmaera bag.

 

But I no longer have the time to make an on-line answer for you, but you can

1. make a search to the yahoogroups list miror (or the archved posts) for a post of mine on the mathematics of DOF

2. Wait for a more knoweldgeble member to chip in

 

all the best, Kostas

--- Στις Δευτ., 22/09/08, ο/η PhotoRoy6@xxxxxxx <PhotoRoy6@xxxxxxx> έγραψε:

Από: PhotoRoy6@xxxxxxx <PhotoRoy6@xxxxxxx>
Θέμα: Re: WA on Pocket Camera vs DSLR
Προς: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxx>
Ημερομηνία: Δευτέρα, 22 Σεπτέμβριος 2008, 23:05

Pop Photo in an article stated that the pocket cameras have more depth of field due to the smaller size sensor. Is this a physic fact or a practical fact?   I.E. A practical fact is that a wide angle lens has more DOF than a telephoto lens in use but he physic fact is that both the wide angle and the telephoto have the same DOF if you blow up the center of the wide angle picture to the same image size as the telephoto in its print.

 

Roy

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