John
On Sat, 13 Mar 2004 19:23:17 -0500, Bill Owens <[EMAIL PROTECTED]> wrote:
That was my result too, from 1/30 through 2 sec no dead pixels, no hot pixels.
Bill
----- Original Message ----- From: "John Forbes" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, March 13, 2004 7:19 PM Subject: Re: *ist D Pixel Comparison Test
I tried out mine, following this thread. At speeds from 1/30 through to 4http://www.heritageservices.com.au/Pentax%20ist%20D%20Photos/Web%20Gallery/i
secs I got nothing, using TIFF (which is what they recommend).
The lens was different, but that shouldn't matter!
John
On Sun, 14 Mar 2004 07:39:50 +0800, Dr. Shaun Canning <[EMAIL PROTECTED]> wrote:
> Hi guys,
>
> Anyone willing too take part in a little experiment with your *ist D? I
> know how you guys all love comparing lenses and gear from
> time to time, so hopefully a few of you might help me out.
>
> I want to compare the number of recorded 'hot' pixels with other owners
> to see if the results I got from testing are normal or
> otherwise. It'll take about 3/4 of an hour to run the tests the same way
> I did.
>
> I used a little utility called 'Dead Pixel Test' which is available at
> http://www.starzen.com/imaging/deadpixeltest.htm
>
> I took a series of shots with the following set-up.
>
> 1. Lens cap on
> 2. Viewfinder cap on
> 3. Manual mode
> 4. Manual Focus
> 5. JPEG Highest Quality
> 6. F8.0 using FA 24mm (not that the lens should really matter)
> 7. Noise reduction On
>
> I took frames with shutter speeds ranging from 1/4000 down to 2 seconds
> (all speeds in between). I then used the Pentax Photo
> Browser to export a *.csv worksheet to work on in excel. Then I ran each
> frame through the test program, as per the instructions. I
> set the Luminance threshold to 60, and the Dead Pixel threshold to 100.
>
> Thankfully, I recorded no dead pixels, and the worst result was a total
> of 4 'hot' pixels at 1/8 and 1/6 sec. noise reduction does
> cut in at 1/4 sec, eliminating all 'hot' pixel occurrences from 1/4 too
> 2 secs.
>
> As other have pointed out, some of the images I uploaded yesterday
> definitely display hot-spots caused by these 'hot' pixels. What I
> am interested in is the results that anyone else may get to compare to
> my camera.
>
> Thanks in advance,
>
> Shaun
>
> Dr. Shaun Canning
> Cultural Heritage Services
> Lawrence Way, Karratha,
> Western Australia, 6714
> Mob: 0414-967 644
>
> [EMAIL PROTECTED]
> www.heritageservices.com.au
>
>
>
> -----Original Message-----
> From: Dr. Shaun Canning [mailto:[EMAIL PROTECTED]
> Sent: Sunday, 14 March 2004 6:37 AM
> To: [EMAIL PROTECTED]
> Subject: RE: *ist D Photos
>
> Thanks Mark. I would have liked the 'in flight' shot to be a bit
> sharper, but you know how fast these little buggers move. It was
> more luck than good management. I'm pretty happy with the overall
> performance of the *ist D though, even if I do have a couple of
> 'hot' pixels.
>
> Cheers
>
> Shaun
>
> Dr. Shaun Canning
> Cultural Heritage Services
> Lawrence Way, Karratha,
> Western Australia, 6714
> Mob: 0414-967 644
>
> [EMAIL PROTECTED]
> www.heritageservices.com.au
>
>
>
> -----Original Message-----
> From: Mark Cassino [mailto:[EMAIL PROTECTED]
> Sent: Sunday, 14 March 2004 2:54 AM
> To: [EMAIL PROTECTED]
> Subject: Re: *ist D Photos
>
> Cool photos, especially the dragonflies in flight.
>
> I was wondering how the *ist-D would do with bugs - looks great! (Mine
> arrived with the first snow, so no chance to test it on insects yet).
>
> - MCC
>
> At 12:41 PM 3/13/2004 +0800, you wrote:
>
>> Hi gang,
>>
>> Here are the results of my first foray into the bush with an *ist D.
>> all of
>> the shots were taken with the *ist D, battery grip, FA 100mm macro. All
>> were
>> handheld. Photoshop work was limited to sharpening and adjusting the
>> levels
>> a bit.
>>
>> The files are all in the 1-3 mb range, so be warned, they'll take a
>> while to
>> come down the pipe via a 56k modem. None of them are resized.
>>
>>>> ndex.htm >> >> Tell me what you think? >> >> Cheers >> >> Shaun >> >> Dr. Shaun Canning >> Cultural Heritage Services >> Lawrence Way, Karratha, >> Western Australia, 6714 >> Mob: 0414-967 644 >> >> [EMAIL PROTECTED] >> www.heritageservices.com.au > > ----- > > Mark Cassino Photography > > Kalamazoo, MI > > http://www.markcassino.com > > ----- > > > > > > >
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