interchangeable lenses and my Olympus C-2100UZ

Archived from groups: rec.photo.digital.slr-systems (More info?)

This is still about my Olympus c-2100uz. If anyone can figure out why I
cannot reply to a post I would dearly appreciate it.

Now, I have several different lenses, filters etc for this camera. Are you
saying that the lenses I have are not considered 'interchangeable'? If
they aren't , would someone please tell me what an interchangeable lens
is? Thank you for your patience.

Archived from groups: rec.photo.digital.slr-systems (More info?)

Dave Fouchey <dfouchey@sc.rr.com> writes:

> An interchangeable lens means the lens dismounts completely from the
> Camera Body to be replaced by another with the same mounting. On the
> C2100Z you are using an ACCESSORY lens to compliment the FIXED lens on
> the camera body to give you some of the flexibility of the
> interchangeable lens cameras. It is a simple distinction often
> confused by ambiguous advertising.
>
> The basic lens on the C-2100 is NOT removable you can only ADD
> supplementary lenses to it. A dSLR on the other hand has a lens mount
> on the BODY of the Camera that permits the lens to be removed
> completely and replaced by another.

So on the very early kodak digital cameras where there was a relay
lens inside the camera to make better use of the early tiny
sensors. Despite being based on, say, a nikon F90 camera, they weren't
really interchangeable lens cameras?

B>

Archived from groups: rec.photo.digital.slr-systems (More info?)

Dave Fouchey <dfouchey@sc.rr.com> writes:

> On 28 Nov 2004 11:31:45 +0800, Bruce Murphy <pack-news@rattus.net>
> wrote:
>
> >So on the very early kodak digital cameras where there was a relay
> >lens inside the camera to make better use of the early tiny
> >sensors. Despite being based on, say, a nikon F90 camera, they weren't
> >really interchangeable lens cameras?
> >

> Interesting question, if it was simply a corrector in the light path
> INSIDE the Camera body but permitting the use of existing Nikon Mount
> Lenses I would tend to class it as interchangeable.

But it's an imaging lens with possibly multiple elements!

> I was trying to
> give a fairly simple answer in a gross manner not too tight on the
> fine points. It would Still be an SLR in any event since it used a
> movable flip up mirror and used the shooting lens as the view finder.

Ah, so the pellicle mirror SLRs aren't really SLRs. Damn.

> Don't ya love how terms get mushy?

Personally, I think the people who came up with these ridiculous group
definitions should be taken out and beaten repeatedly about the head
with a difficult-to-classify camera of your choice. Particularly the
ones with the expensive point and shoot "ZLR" cameras and their raging
insecurity issues.

B>

Archived from groups: rec.photo.digital.slr-systems (More info?)

Puzzled wrote:
> This is still about my Olympus c-2100uz. If anyone can figure out why
> I cannot reply to a post I would dearly appreciate it.
>
> Now, I have several different lenses, filters etc for this camera.
> Are you saying that the lenses I have are not considered
> 'interchangeable'? If they aren't , would someone please tell me
> what an interchangeable lens is? Thank you for your patience.

On possible distinction is that if you change the lens on an SLR or DSLR
you can actually get access to the sensor (or film), and hence changing
the lens can let dust into the system and give you marks on all your
subsequent pictures. The c-2100uz is a "sealed" system optically where
this cannot happen - a plus point!

Cheers,
David

Archived from groups: rec.photo.digital.slr-systems (More info?)

Bruce Murphy wrote:
> "David J Taylor" <david-taylor@invalid.com> writes:
>
>> Puzzled wrote:
>>> This is still about my Olympus c-2100uz. If anyone can figure out
>>> why I cannot reply to a post I would dearly appreciate it.
>>>
>>> Now, I have several different lenses, filters etc for this camera.
>>> Are you saying that the lenses I have are not considered
>>> 'interchangeable'? If they aren't , would someone please tell me
>>> what an interchangeable lens is? Thank you for your patience.
>>
>> On possible distinction is that if you change the lens on an SLR or
>> DSLR you can actually get access to the sensor (or film), and hence
>> changing the lens can let dust into the system and give you marks on
>> all your subsequent pictures. The c-2100uz is a "sealed" system
>> optically where this cannot happen - a plus point!
>
> Actaully most sensors have a glass plate in front of them. On the
> other hand, if you're consideringthe c2100uz as a sealed system it
> shouldn't be possible for dust to get in between the primary and
> secondary lenses, but it is.

Yes, I was considering the sensor and any filter as a single unit which is
susceptible to dust. Note the use of quotes around sealed! It's unlikely
to be completely sealed as in vacuum-tight.

Cheers,
David

Archived from groups: rec.photo.digital.slr-systems (More info?)

Bruce Murphy <pack-news@rattus.net> writes:

> So on the very early kodak digital cameras where there was a relay
> lens inside the camera to make better use of the early tiny
> sensors. Despite being based on, say, a nikon F90 camera, they
> weren't really interchangeable lens cameras?

What are you talking about?

I own one of those (a Kodak DCS-460, based on the Nikon N90s):
http://heim.ifi.uio.no/~gisle/photo/dcs460.html
It has a 6 Mpx sensor that which is 28 x 19 mm. There is no
"relay lens" of any kind inside the body - nor am I aware of
any other design using a "relay lens" (whatever that is).

I can't understand what you refer to, unless you are talking of
"microlenses" - which is a feature you find on the /newer/ dSLR
cameras. They are attached to the sensor to gather light for the
photon wells.
--
- gisle hannemyr [ gisle{at}hannemyr.no - http://folk.uio.no/gisle/ ]
========================================================================
When you say you live in the real world, which one are you referring to?