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Photo Forum / General Photo Topics / General Topics / May 2008

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Upgrading my digital camera

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rosamontes18@yahoo.ca - 14 May 2008 02:14 GMT
I currently have a Samsung Digital Camera that I purchased about 4
years ago.
However, now I'm thinking that I need an upgrade because although the
camera works during the day, any night time pictures that are taken
are blurry and dark.  Also from the time that I click on the shutter,
the camera actually takes a few seconds to take the picture.  Clearly
I need a new one.  Now the challenge is what camera should I
purchase.  I have been doing my research but I am not quite sure.
I've narrowed the search down to a Fuji, Nikon and Kodak...

If anyone out there has any better recommendations, I would truly
appreciate it as I am not quite sure what it is that I'm doing...

Thanks
Jeff - 14 May 2008 03:03 GMT
> I currently have a Samsung Digital Camera that I purchased about 4
> years ago.
> However, now I'm thinking that I need an upgrade because although the
> camera works during the day, any night time pictures that are taken
> are blurry and dark.

Er, did you miss the bit about light being needed for photography?

 Also from the time that I click on the shutter,
> the camera actually takes a few seconds to take the picture.

It's taking the amount of time it needs to gather sufficient light.

  Clearly
> I need a new one.  Now the challenge is what camera should I
> purchase.  I have been doing my research but I am not quite sure.
> I've narrowed the search down to a Fuji, Nikon and Kodak...

What do you know about exposures?

Do you know what an "f stop" is?

  If not, start Googling!

Exposures are determined by the "film speed", the exposure time, and the
aperture f stop. If you want a shorter exposure you either have to open
up the lens, or choose a faster "film speed".

 All cameras above the simplest point and shoot will give you control
over each of those. That and the related "exposure compensation".

An exposure taken at ASA 100 will take 8 times along as one taken at ASA
800.

 An exposure at f8 will take 8 times as long as one opened up to f 2.8.

  Now, a word about ASA film speed. and cameras. Faster "film" speed
means more "film" noise.

  Cameras with smaller sensors will be noisier than full sized SLR type
cameras. That's why pocket cameras have lower film speed settings. My
pocket A95 is as noisy at ASA 100 as my larger Rebel is at ASA 800.

  Now, I don't know this for a fact, but I suspect that higher
megapixel sensors will be noisier than lower ones. Anyone know more
about this?

  Some cameras in the same class will have less noise at the same film
speed setting. I found it curious that you left out the one manufacturer
known for low noise at higher film speeds. That would be Canon.

  Lastly, if you are shooting landscape type night pictures, consider
steadying the camera, that's what tripods are for.

 HTH,

  Jeff

> If anyone out there has any better recommendations, I would truly
> appreciate it as I am not quite sure what it is that I'm doing...
>
> Thanks
Alex Monro - 14 May 2008 11:53 GMT
<much useful advice snipped>

>    Now, I don't know this for a fact, but I suspect that higher
> megapixel sensors will be noisier than lower ones. Anyone know more
> about this?

Yes, all other things being equal.  More pixels on the same size sensor
means each individual pixel must be smaller, so gathers less light.
The electrical signals must therefore be amplified more, which leads to
more noise.  Also, each individual photon creates a bigger change in
the signal.

Most compact cameras use a 1/2.5" sensor (about 4.3 x 5.7mm).  A few,
such as the higher end Canons, and the Panasonic FZ50, use the larger
1/1.8" size (5.3 x 7.2mm).  Fuji seem to use the largest sensors, 1/1.7"
(5.7 x 7.6mm) in the S6000 and others, and 2/3" (6.6 x 8.8mm) in the new
S1000.

>    Some cameras in the same class will have less noise at the same
>    film
> speed setting. I found it curious that you left out the one
> manufacturer known for low noise at higher film speeds. That would be
> Canon.

Actually, in my experience, Fuji's Super CCD sensors tend to have the
best noise performance at higher ISO sensitivities.  Not all Fuji
cameras use the Super CCD sensor though.

>    Lastly, if you are shooting landscape type night pictures, consider
> steadying the camera, that's what tripods are for.

Although, like image stabilisation, they're not so useful if the
subject is moving.
Signature

Alex Monro
Exeter, UK
Running on Linux (Kubuntu 7.1)

Blacktony - 16 May 2008 19:11 GMT
"Alex Monro"

[cut]
> Yes, all other things being equal.  More pixels on the same size sensor
> means each individual pixel must be smaller, so gathers less light.
> The electrical signals must therefore be amplified more, which leads to
> more noise.

More, increasing the number of sensors in the same area leads tio increase
the temperature of the sensor itself. More temperature = more noise.

       Antonio from Italy

P.S. : sorry for my English
gpsman - 14 May 2008 04:27 GMT
On May 13, 9:14 pm, rosamonte...@yahoo.ca wrote:

> I've narrowed the search down to a Fuji, Nikon and Kodak...
>
> If anyone out there has any better recommendations, I would truly
> appreciate it as I am not quite sure what it is that I'm doing...

Really...?
-----

- gpsman
ray - 14 May 2008 15:38 GMT
On Tue, 13 May 2008 18:14:39 -0700, rosamontes18 wrote:

> I currently have a Samsung Digital Camera that I purchased about 4 years
> ago.
[quoted text clipped - 10 lines]
>
> Thanks

FWIW - I've been very pleased with my Kodak P850. Unfortunately, the P
series has been discontinued but some are still available at very good
prices at the Kodak online store.
Frankster - 14 May 2008 16:05 GMT
>I currently have a Samsung Digital Camera that I purchased about 4
> years ago.
[quoted text clipped - 10 lines]
>
> Thanks

Regarding the time it takes to "take a picture". This delay has been the
Achilles heel of digital cameras since the early days in digital. This delay
(as compared to almost instant response with film cameras) is minimized,
generally, by the more money you spend on a camera.

There has been a great improvement in this delay time over the last few
years in all digital cameras. It would make sense that if you purchased
almost any new camera (compared to four years ago) that the response would
be better.

Having said that, I recently purchased a Nikon D60 as a companion to my
older Nikon D100. One thing I notice about these cameras is that they can
shoot very fast without much noticeable delay. Very nice for capturing
moving subjects.

One thing you should consider on your current camera to improve its response
time is to turn off red-eye reduction. Possibly turn off autofocus and focus
manually if your camera permits that. Also check into presetting White
Balance and turning off auto-WB. These things can drastically improve
response time.

About the blurry and dark images during night shots. Not much you can do
about that except use a tripod with longer exposures.

-Frank
Bill H - 16 May 2008 22:17 GMT
> I currently have a Samsung Digital Camera that I purchased about 4
> years ago.
[quoted text clipped - 10 lines]
>
> Thanks

Any of these mentioned will give good results.  I have a Fuji that I've
had for a few years and been very happy with it.  My daughter has a
Kodak and is very happy with that one.  We have both now moved on to
dSLRs (Nikons) for additional functionality but I find I still use my
old Fuji from time to time.
Cats - 18 May 2008 09:32 GMT
On May 14, 2:14 am, rosamonte...@yahoo.ca wrote:
> I currently have a Samsung Digital Camera that I purchased about 4
> years ago.
[quoted text clipped - 8 lines]
> If anyone out there has any better recommendations, I would truly
> appreciate it as I am not quite sure what it is that I'm doing...

FIrstly I think that to produce a list of makers before you know why
you are having the problems you are is a bit premature.

I'm also not clear if you are only having problems with night
photography, or if you are experiencing shutter delay on day photos.
For night photos you need to use a tripod.  Since there is a lot less
light the shutter had to be open a lot longer to gather enough to take
the photo, hence if the camera moves you get blurry images.  Whatever
camera you choose it will be the same for night photos, so a new
camera won't solve that problem.

If you are holding the camera at arm's length to use the LCD on the
back to frame the shot that will make the problem even worse.  I
always use the viewfinder, and one problem for me with most modern
compact cameras is that there is either no viewfinder, or it's very
hard to use.  My old Canon A70 has an excellent large bright optical
view finder and if only it had more pixels I would still be using it,
but 3.2 is not enough to produce quality A4 prints from given that I
frequenty crop the image, plus I want to be able to produce A3
prints.  My newer Fuji has a horrible electronic one which is much
harder to use.  My next camera will be a D-SLR and the quality of the
viewfinder will be part of how I choose which one to get.

Most digital cameras (D-SLRs are the exception) suffer from some
degree of shutter lag e.g. you press the button and there is a pause
before it actually takes the exposure.  However some are better/worse
than others.  It also takes time from pressing the power button to the
camera being ready to take photos - again this is shorter with D-SLRs
than with compact cameras, and both I imagine are a case of getting
what you pay for.

I'd be interested in how you narrowed your choice of brands down,
especially since you don't seem to know what the problem is and you
seem to have eliminated the makers of some very fine camers - I would
expect to see Canon and Olympus on the list.

BTW the image quality from my Fuji is pretty grim if I save JPGs - it
oversharpens leading to halos where there is a junction between bright
and dark areas.  It is probably only a problem for me as I enter
camera club competitions and most judges have eagle eyes when it comes
to that kind of problem.  It's a camera with a 10x zoom as well, and
is prone to 'purple fringes' (caused by chromatic aberation) which
again is a case of getting what I paid for - it was a cheap camera.
With a D-SLR the first is down to the quality of the image processing
in the camera (and how it's setup), but the second is down the the
quality of the lens(es).
ransley - 19 May 2008 16:29 GMT
On May 13, 8:14 pm, rosamonte...@yahoo.ca wrote:
> I currently have a Samsung Digital Camera that I purchased about 4
> years ago.
[quoted text clipped - 10 lines]
>
> Thanks

Anything under about 60/ sec needs a tripod, or set it on a solid
surface and use the timer. did you try that first. Night photography
can enter alot of noise, an old sony I have has special noise
reduction for night work. You should test what ever you want before
you buy it or you might be unhappy.
Philip Procter - 20 May 2008 06:08 GMT
>On May 13, 8:14 pm, rosamonte...@yahoo.ca wrote:
>> I currently have a Samsung Digital Camera that I purchased about 4
[quoted text clipped - 11 lines]
>>
>> Thanks
Yeah, you do. There's a hugh crop of new digital SLR's that are
capable of incredible results at reasonable prices. Superzoom cameras
seem to do as much for far less money, but be careful, the pictures
are not as good as a dSLR (for many reasons).

If you do allot of pictures in low light, consider a camera with
antishake. Some (ie: Sony) have antishake in the body so it works with
all lenses. Others (Nikon and Canon) have it in individual lenses,
which is a bit more expensive, but can be a stop more effective. I've
got an old Minolta and can hand hold to 1/8 sec with very good
results.

2p
The One - 20 May 2008 12:18 GMT
I am not quite sure what it is that I'm doing...

> Thanks

You have a DSLR which cost many hundreds of £/$.

You come out with the above statement.

I have to laugh at digital users.
ransley - 20 May 2008 23:09 GMT
> I am not quite sure what it is that I'm doing...
>
[quoted text clipped - 5 lines]
>
> I have to laugh at digital users.

I laugh at film users, there is no comparison anymore to 35mm film, in
all ways I can think of its superior, even cheap 150$ cameras
Robert Coe - 25 May 2008 01:28 GMT
: I am not quite sure what it is that I'm doing...
: >
[quoted text clipped - 5 lines]
:
: I have to laugh at digital users.

Well, we laugh at you, sirrah, so everybody wins.  :^)
 
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