Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., "mkravit" 
<michael.kravit@w...> wrote:
> Larry,
> 
> I am not sure what the point is?
> 
> BTW, the new Canon digital to be released in Orlando next month is 
> said to be a 6 megapixel camera with a 1:1 chip. So the focal 
length 
> of a 50mm lens is the same whether it is digital or 35mm film.
> 
> Mike

i  guess what i was saying is that the chip is much smaller than the 
image area of a 35mm piece of film,in most consumer level digital 
cameras. of course if the new cannon has a 1:1 chip then it will have 
the same depth of field as a 35 mm film cam.  but, lets say that the 
digital camera has a 9 mm lense and its angle of view is the same as 
a 50mm  lense on a 35 mm cam due to the smaller image area of the 
digital cam . the 9mm lense is going to have greater depth of field. 
the blur circle at the film plane is going to be smaller than the 
50mm lense at the same aperature. i guess the original question was 
how does someone get good depth of field from a digital camear with a 
relatively large aperature. the answer is that the digital cam does 
not need as small an aperature because its lenses are of shorter 
focal length than 35 mm cameras. just trying to explain why you can 
use a relatively large aperature without having to resort to camera 
movements. larry --- In 
DigitalBlackandWhiteThePrint@y..., "riskdr8138" 
> <L.PIRRONE@A...> wrote:
> > --- In DigitalBlackandWhiteThePrint@y..., Pics4U@e... wrote:
> > > Whenever I shoot something that requires that kind of DOF, I'm 
> > > normally shooting wide angle and the DOF just takes care of 
> itself. 
> > > Besides, I'm a believer is staying away from the first two and 
> last 
> > two 
> > > stops of any lens. IMHO? The extra sharpness of a middle upper 
> > > f/stop such as f/8 or f/11 seems to give the results I need.
> > > 
> > > I'm also primarily a people shooter so such things as 6 second 
> > > shutter speeds aren't possible in many situations.
> > > 
> > > Greg
> > > 
> > > > How do you get adequate DOF in a 35mm digital camera at f/8 
w/o 
> > the
> > > > use of movements?  As a LF shooter, I get into the near/far
> > > > relationships of DOF and find that f/8 does not come close to 
> > giving
> > > > me what I need.
> > 
> > the lenses in a digital camera are of a much shorter focal length 
> > than in a 35 mm camera for the same angle of view. f8 in these 
> lenses 
> > has much greater depth of field than in a 35mm camera. the same 
> > principal holds true for the 4x5. a 150mm lense has the same 
angle 
> of 
> > view (approximately) as a 50 mm lense in a 35mm cam. hense the 
need 
> > for some movements on the 4x5.  larry pirrone > 
> > > > Movement? If the wind is blowing, I am at home sleeping. 
> > > > 
> > > > Mike