Megapixels – Are they important?

[treeve]

Kind of you Don ...
My other gallery is at
http://treeve.250free.com/hoo.htm
It includes pictures of around 1Mb on the Fishing Vessel side.
Raymond

[jamieZ740]

a Turntable plays records at 33rpm +/-8% and 45rpm +/-8% but if you can use it, it can do so much more...

[treeve]

Even then the final effect of what is transferred to the audio pre-amplification and amplifiers, let alone the speaker assembly depends on the relationship of the disc to the turntable, the uniformity of speed, the drive method (direct or band), and especially the "needle" and its assembly.
Which one is the Weakest Link?

[jamieZ740]

now we are just getting off the camera subject! a crap built needle is as a crap built lens, low quality not due to camera/turntable

[treeve]

Now, further question on the megapixel front ... Fuji Finepix S9500.
The Finepix has a setting for "F"ine which produces a 4.4Mb picture.
As opposed to the "N"ormal 2.2Mb, yet the number of pixels is
the same, so why is the file (jpeg) bigger, and what is the extra
information being stored in order for it to be called "Fine"?

[Don Hoey]

treeve,

I have not forgotten your other question its just that I am a bit busy at the mo but I have not forgotten.

Re this question. Image size remains the same at 3488 x 2616 but 2.2mb of image info has been discarded through compression. If the image was a ship with a lot of sky then you may not notice. If the pic was of detail in say a marine engine then you may well.

Don

[Don Hoey]

Originally Posted by treeve

....... the drive method (direct or band)..........
Which one is the Weakest Link?

I have had direct drive and belt drive. For me belt drive wins hands down.

So in digital photography is that the sensor or the processing engine.

Oh I nearly forgot. Clive, I see the LP12 is still in production. Cost ....

Don

[treeve]

Hi Don and thank you; I see, half the image has been
thrown out, rather than the Fine setting adding info.
No probs - I am an extremely patient bloke, busy myself,
but my problem is that my mind dances around all the
time and when the question pops - out it comes, despite
the fact I am researching 22 ships for someone, and offering
what I have on a bit of local history to someone else.
I don't know what it is to be un-busy!!
Best Wishes, Raymond

[Don Hoey]

Raymond,

Luckily Rob has picked up on this in his ' Data Compression ' thread and will do a lot better than me in explaining it.

Don

[Don Hoey]

Doing a bit of catch up on whats happening in the Canon and Nikon announcements it seems for some people MP is everything. Already posters looking for 26mp in a DSLR.
Kind of makes you wonder how large these guys generally print to. I remember seeing some brilliant exhibition prints 20 x 16 from a 6mp D100 a few years ago.

It would be interesting to see the sales figures for the new 1DS mk III at 21mp in the amateur market. If I was a pro in advertising therefore requiring mega sized prints I would be going the Hassleblad route, 39mp, for the larger pixels. Also the huge advantage of a bigger focussing area.

Don