Sorry I have posted this here before but I just wanna do it again since I did not get many replies the last time.
To owners of 1D2N, I wonder if you have tried similair shots as following from your 2N with 17-40L? If you have, did you notice some wierd dark shadows?
Pic #1, 1D2N * 17-40L@17, f4, 1/13s, iso400
100% crop of the marked area from 1D2N
100% of a similiar crop from 1D3, 17-40L@17, f4, 1/50. iso3200
100% of a similiar crop from 1Ds2, 17-40L@17, f4, 1/30. iso1600
100% of a similiar crop from 20D, EFs10-22@12, f4, 1/13s, iso400
Not really a fair comparison but it shows the weird "shadow" I am having trouble with.
Pic#2, 1D2N * 17-40L@17, f4, 1/40s, iso400
100% crop of the marked area
Pic#3 1D2N * 17-40L@17, f7.1, 1/30s, iso500
100% crop of the marked area, check the "SEIKO"
I have tried to take the same shots with both my 1D3 and 1Ds2 and the pix are great, without those shadows.
Really appreciate your opinions about what causes those shadows. Thanx in advance.
Edited by ivanshusky on Dec 14, 2007 at 09:27 PM GMT
What appears to be happening there is that in some parts of the image the frequency and angle of the divisions in the ceiling pattern matched the pitch and angle of the sensor sites creating the moire pattern. That is one of the reasons the sensor has anti-alias filter over it which slightly blurs the image. It is random and not much you can do about it.
Maybe we're not getting what you actually have a problem with. Are you talking about the "shadows" around the lights, which sort of look like sharpening halos?
Yes, its the "shadows" around the lights. All these pix were taken in raw and those shadows are visible when viewing the raw file without any sharpening.
Edited by ivanshusky on Dec 14, 2007 at 09:23 PM GMT
Okay, I see what you're talking about now that you're posting the comparisons. That's a really, really strange effect and I'm at a total loss to explain it.
What you are referring to is banding correct? I had severe banding in my 1D Mark IIN (large image that showed up at high iso and more mildly, like yours, at ISO 400
I had my body serviced by Canon - it took two rounds - and they fixed it. They basically replaced the sensor assembly (which I believe included the sensor), some PCB, and some flexible circuit boards.
Hi Gene, its not the banding I am referring to. Please have a look at the 1D3, 1Ds2 and 1D2N comparison. Those black dots are not shown in other models but the 1D2N.
I have had one of my 1D2N in Canon in the past 5 MONTHS and they just cannot fix and refuse to give me my money back.
Yes, I see what you are talking about now. On the monitor I am at right now it looked like some banding in that airport photo - maybe it is runways
ivanshusky wrote:
Hi Gene, its not the banding I am referring to. Please have a look at the 1D3, 1Ds2 and 1D2N comparison. Those black dots are not shown in other models but the 1D2N.
I have had one of my 1D2N in Canon in the past 5 MONTHS and they just cannot fix and refuse to give me my money back.
This shadow thing is driving me crazy. Since my 1D3 has the AF issue so its only the 1D2N I can use for sports and this phenomenon with 1D2N is just not acceptable.
I am really curious why no one noticed this before, afterall 1D2N has been around for some time already. Or maybe only a few batches of 1D2N suffer from this issue??
