Author Topic: Sony a900 Reviews and information - links  (Read 15253 times)

0 Members and 1 Guest are viewing this topic.

DonSchap

  • Guest
Re: Sony a900 Reviews and information - links
« Reply #30 on: September 30, 2008, 03:59:44 PM »
Just looking from the inside, the A900 (w/o lenses) is easily a $5000-$7000 investment, because of the required improvements you will also have to make in supporting the camera, unless you are planning to go straight to printer from the camera.  The file sizes and maniipulating them will require easily 4GB of RAM.  You probably should have a 1 TB hard drive, to be realistic ... or some method of quickly offloading your RAW files from your smaller drive.  One way or another, that's easily $500-$1000 to improve the PC.  Also, you really need hyperthreading to make this a less time consuming process.  The faster the processor, the better.  Again ... more $$$.

So, swallow hard when you do make the move ... because in for a penny ... in for four or five thousand pounds!

Offline Simon [aka springtide]

  • Article Contributor
  • Friend of DynaxDigital
  • *****
  • Posts: 2445
  • Gender: Male
Re: Sony a900 Reviews and information - links
« Reply #31 on: September 30, 2008, 05:08:39 PM »

For me file sizes wouldn't really be an issue.  I'm currently using uncompressed RAW, so could just switch to cRAW so the size wouldn't be that much different.

For filesizes, maybe Sony will release a firmware that will allow reduced resolution RAW files, like you get on the new Canon 5Dmark2

As for processing, my PC is already up for it - and CS4 looks like it might hold the key to processing those large images (see my post on GPGPU within CS4 @ http://www.dynaxdigital.com/index.php/topic,6878.0.html)
I have 128 streaming processors on my graphics card just waiting to be used on those large A900 files, and it would make me feel much better to put them to good use  :)
It appears that CS3 and CS4 is already 64bit on Windows platforms which is great news, RAM is just so cheap nowadays. There still appears to be no word from Adobe on 64bit support for Mac, which seems odd as I thought Mac was the primary platform.

I think it's like all upgrades, the A900 will show some weaknesses in some of your lenses just like the A700 did, but just like the A700 you don't have to fix all of those at once.

I don't need 24MP, but probably didn't need 12MP either most of the time.  There are two drivers for me to go FF, one is that BIG viewfinder (just looking though my Dynax 7 film camera makes me want to go FF), as well as the DOF.

It's a shame there's no pop-flash and the price is high and I can't afford it, but hey maybe my wife will get me one for my 40th next year ???  I can only ask :)
NEX-7

flickr

Offline Stef.

  • Past Moderator
  • Friend of DynaxDigital
  • *****
  • Posts: 11520
    • Stef's photographs
Re: Sony a900 Reviews and information - links
« Reply #32 on: September 30, 2008, 05:31:13 PM »
The A900 for me is not a camera that I would use on a daily basis- the same as with my medium format cameras. I would use it not for snapping shots on the way but for either studio work or if I really want to take an image for specific purposes i.e. exhibitions. I would not want to have to deal with these huge file sizes on a daily basis. So in short- for me the A900 will sit comfortably next to my A700 but I would consider it more as a specialist camera. I don't see why I would want to use the A900 with the capture set to smaller filesizes. Then I can as well take the A700 or in fact any other camera with lower resolution.
Stef.
Stef.'s photographs

[url=http://www.flickr.com/photos/15931938@N05/]flickr


"Dream as if you'll live forever- live as if you'll die today"

Offline fother

  • Past Moderator
  • Friend of DynaxDigital
  • *****
  • Posts: 7846
  • Gender: Male
  • Michael
    • MichaelFoth
    • au.linkedin.com/in/fother
    • fother
    • MichaelFoth
    • my index site
Re: Sony a900 Reviews and information - links
« Reply #33 on: October 04, 2008, 07:47:21 AM »
British Journal of Photography have published a review of the a900

Quote from: British Journal of Photography
Sony's first full-format camera is designed to meet the needs of ambitious amateurs and semi-professionals. JPEG compression is perfectly balanced, and input dynamic range at high ISO speeds is excellent. Tonal reproduction focuses on instant image appeal (rather than something more neutral, which you see with more pro oriented cameras), and the sharpening is OK.

Noise is a little unnatural, which was to be expected by this enormous pixel count. The very fine salt-and-pepper character of noise will often virtually vanish, as just a few pictures will need to be enlarged to 100% or more. This should be kept in mind when these results are put side-by-side against a test of a 12 million pixel camera, for example.

Offline Dr.Theo

  • Friend of DynaxDigital
  • *****
  • Posts: 1196
  • Your Vietnam Connection
Re: Sony a900 Reviews and information - links
« Reply #34 on: October 04, 2008, 09:52:42 AM »
so are they saying there is very little noise or what?
The first step is admitting you have a problem.
A700/7d/A100 sony 50/1.4|70-200 ssm|70-300G|CZ 16-80|Min 17-35G|
28-70G|28/2|35/2|85/1.4GD|100/2|100/2.8D|135/2.8|200/2.8HSG|300/2.8G|Sigma 10-20

Offline fother

  • Past Moderator
  • Friend of DynaxDigital
  • *****
  • Posts: 7846
  • Gender: Male
  • Michael
    • MichaelFoth
    • au.linkedin.com/in/fother
    • fother
    • MichaelFoth
    • my index site
Re: Sony a900 Reviews and information - links
« Reply #35 on: October 04, 2008, 11:44:30 AM »

My read was that they were impressed. Worth reading the whole article :)
Oh they also review a couple of lenses in the same piece

Offline 1mjordan

  • Regular Member
  • ***
  • Posts: 282
  • Gender: Male
    • Images of Ulster
Re: Sony a900 Reviews and information - links
« Reply #36 on: October 04, 2008, 12:53:09 PM »
This camera just gets more and more interesting...

all my lenses are from full frame other than the one that came with the a100 and is never used anyway...

so no extra costs that way...

mmmnn....

mmmmnn...

No No No! Repeat after me...No No No, I do not need a third camera...;)

wether I want it or not I don't need and can't justify it...

so I'll probably get one next year...lol
Michael [1mjordan]
_______________________________________________________
Gear List: A700+Grip, A100, Minolta 7000i./ Lenses  Minolta-400mm F4.5 HS APO G, 80-200 f2.8 HSG, 100mm F2.8 macro, 500mm F8 reflex, 50mm F1.7, 70-210 F4 macro, 35-105mm F3.5-4.5 macro, 35-70mm F4 macro, 135 f2.8, Sony 18-70mm f3.5-5.6./ Jessops ext tubes, kood/cokin filters, grip, angle viewfinder.

Offline Simon [aka springtide]

  • Article Contributor
  • Friend of DynaxDigital
  • *****
  • Posts: 2445
  • Gender: Male
Re: Sony a900 Reviews and information - links
« Reply #37 on: October 04, 2008, 08:21:07 PM »
British Journal of Photography have published a review of the a900


Doesn't David Kilpatrick work for Photoclubalpha work for the 'British Journal of Photography' or was that a different company?

From what I've read, it appears that it does get noisy at high ISOs - but with so much resolution you could print pretty big and still not notice the noise.  I guess when comparing the noise between a 12MP and 24MP cameras (for printing to the same size), you need to look at one at 1:1 and the other at 1:2.
This is what David previously stated with the A700 and taking Jpegs at 6MP for improved High ISO performance out of the camera.

Anyway, an interesting read   :)
NEX-7

flickr

Offline fother

  • Past Moderator
  • Friend of DynaxDigital
  • *****
  • Posts: 7846
  • Gender: Male
  • Michael
    • MichaelFoth
    • au.linkedin.com/in/fother
    • fother
    • MichaelFoth
    • my index site
Re: Sony a900 Reviews and information - links
« Reply #38 on: October 05, 2008, 12:38:36 AM »

Doesn't David Kilpatrick work for Photoclubalpha work for the 'British Journal of Photography' or was that a different company?


David runs/owns photoclubalpha, and contributes to the British Journal of Photography, yep

Seems to me that the overall handlining of noise in increasingly high ISOs is improving with every model (& firmware release)