35mm film vs Digital..what is the difference?

Skip wrote:

"Paul Furman" wrote in message
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Skip wrote:


"Paul Furman" wrote in message
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jeremy wrote:



"Skip" wrote in message
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"Paul Furman" wrote in message
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"jeremy" wrote in message



"That_Rich" wrote in message



DOF scales on my lenses work flawlessly and I use them all the
time.
One of the parts of *upgrading* to digital that makes me shudder is
lack of DOF scales on the lenses.
I'll stick with film a while longer.

But, just think:

With the immediacy of digital, you can check your shots right after
taking them to see if they were in focus!

Isn't technology great?

My LCD on my 5D isn't really good enough to check critical focus, and
I doubt any other one is, either. "Good enough," maybe, but not
critical.

The D200 is quick to zoom in 100% or even 200%.

Oh, it zooms, quite quickly, but are you willing to trust such a low
resolution image to tell you that you are absolutely, with out a doubt,
in focus? I'm not.

I was being sarcastic when I suggested that DOF scales could be done
away with now that the photo could be viewed on the LCD screen.

I know you were joking but really I think it is good enough at 200%
inconvenient to scroll around to assess DOF but for checking shake you
can flip thru a set of shots at full zoom.


Well, yes, you can check for gross focus errors, but not critical focus.

I checked and the same file on my laptop at 100% zoom is a bit smaller
than the max zoom on the D200 LCD.


Hmm, interesting. I've not checked my laptop, since I don't do any PP on it
(angle of view issues.) But I wouldn't have thunk it...
I know the max zoom on my 5D is smaller than 100% on my desktop, but that's
a 20" monitor.

Laptop is 1280x800 destop is a 21" at 1280x960

In article ,
Graham Fountain wrote:
Their first practical day arrives, they are shooting portraits, and have
to use a wide aperture to reduce DOF.

So, day one is portraits, and everybody knows that the most important part
of portrait photography is shallow DOF. No, it is not about interacting with
the model, chosing the right light, etc. No it is all about shallow DOF.

I'd say, look for a real course.

Prac Day 2 arrives and they go into the studio to practice using the
studio flash. With the power of the lighting, the flash meter indicates
they need to use F8 at ISO 100. Johnny confidently sets his camera to M,
presses the buttons to change his shutter to 1/100, and starts to change
the aperture to F8 - damn, his camera only has 5.6 as the smallest
aperture.

And here is goes from bad to worse. We just had portraits with shallow
DOF but the studio flash requires f/8. I wonder what they used for the
portraits.

Anyhow, if you can't reduce the output of the flash, it is time to get a
new flash.

The next day they are photographing kids down at the kindy. To help them
develop their skills, autofocus is forbidden.

Yeah, right. People are encourged to buy el-cheapo SLRs (which are often
AF and have poor viewfinders) and then they have to practice manual focus
on moving targets. (And that with film, so there is no feedback until
after the shoot when they have the film developed).

Again, find a better course.


--
That was it. Done. The faulty Monk was turned out into the desert where it
could believe what it liked, including the idea that it had been hard done
by. It was allowed to keep its horse, since horses were so cheap to make.
-- Douglas Adams in Dirk Gently's Holistic Detective Agency

THO wrote:
In article coh.net,
(Philip Homburg) wrote:
In article ,
Graham Fountain wrote:
The next day they are photographing kids down at the kindy. To help them
develop their skills, autofocus is forbidden.

Yeah, right. People are encourged to buy el-cheapo SLRs (which are often
AF and have poor viewfinders) and then they have to practice manual focus
on moving targets. (And that with film, so there is no feedback until
after the shoot when they have the film developed).

Again, find a better course.

Once upon a time, we didn't have autofocus and the pictures mostly were
focused just fine.

As an educational exercise, it works fine. The instructor wants the
students to think about focus and not just rely on what the camera does
automatically.

One of the problems is that the cheap film SLRs seem to mostly be
missing the DOF preview button.

The focusing screen on the cheap SLRs are also about the same as on the
consumer level of DSLRs, yes you can focus with them but it takes
technique to do so. I shoot a lot of frames with the 20D practicing
this can have gotten pretty good but I would no expect someone to just
pickup a low end film SLR and be able to effectively focus it manually.


Then to the kit lenses that use to come with almost all SLRs were 50mm
at around f/1.4 or f/1.8, which is good if you are manually focusing,
now the kit lenses are all pretty much slower zooms, not so good for
manual focusing.

In short more has changed then just the shift from film - digital in
terms of what you get with an entry level SLR.

Scott

Scott