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View Full Version : Moire killing on D70



Terracotta
11-16-2004, 06:01 AM
I've got a 100% crop of a problem I'm having...
http://www.pbase.com/image/36415436/original.jpg

I've taken this image about 30 times now both jpeg & NEF and I'm still getting this effect, this is a mid-way case, the first was full blown case of maze moire in the tower, dropping the level of sharpening helps, here I've sharpening off. If I use RAW there's almost nothing in the trees but the tower is still just as bad. Bare in mind that I've only got a 50mm f/1.8 at the moment, how would you solve this? As I'm totally stumped.
Here's the full exif data

Make: NIKON CORPORATION
Model: NIKON D70
Orientation: Normal
XResolution: 300.00
YResolution: 300.00
Resolution Unit: Inch
Software: PictureProject Transfer 1.0.1 W
Date Time: 2004:11:16 11:54:31
White Point: 313/1000, 329/1000
Primary Chromaticities: 64/100, 33/100, 21/100, 71/100, 15/100, 6/100
YCb Cr Coefficients: 299/1000, 587/1000, 114/1000
YCb Cr Positioning: Centered
Exif Offset: 354
Exposure Time: 1/500 sec
FNumber: F9.0
Exposure Program: Aperture priority
Exif Version: "0221"
Date Time Original: 2004:11:16 11:49:04
Date Time Digitized: 2004:11:16 11:49:04
Components Configuration: YCbCr
Exposure Bias Value: 0 EV
Max Aperture Value: F1.6
Metering Mode: MultiSegment
Light Source: Fine Weather
Flash: Off
Focal Length: 50.00 mm
Maker Note: "Nikon"
Sub Sec Time: 40
Sub Sec Time Original: 40
Sub Sec Time Digitized: 40
Flash Pix Version: "0100"
Color Space:
Exif Image Width: 2000
Exif Image Length: 3008
Interoperability Offset: 976
Interoperability Index: R03
Interoperability Version: "0100"
Sensing Method: OneChipColorArea
File Source: "."
Scene Type: "."
CFAPattern: ""
Custom Rendered: Normal process
Exposure Mode: Auto Exposure
White Balance: Manual
Digital Zoom Ratio: 1/1
Focal Lengthin35mm Film: 75.00 mm
Scene Capture Type: Standard
Gain Control: None
Contrast: Normal
Saturation: Normal
Sharpness: Soft
Subject Distance Range: Unknown
Unknown: 22/10
ISOSpeed: 0, 200
Quality: "FINE "
WhiteBalance: "SUNNY "
ImageSharpening: "NONE "
FocusMode: "AF-S "
Lens information: 50.0-50.0(mm) F1.8-F1.8
FocusArea: "...."
Mode: 0
NoiseReduction: "OFF "

kgosden
11-16-2004, 01:17 PM
Do you see the moire only on your monitor? I ask as I cannot see anything on my laptop LCD. To my eye both the trees and tower appear similar in sharpness and I see none of the patterning/color shifting I have seen in other moire examples.

D70FAN
11-16-2004, 01:23 PM
I've got a 100% crop of a problem I'm having...

I've taken this image about 30 times now both jpeg & NEF and I'm still getting this effect, this is a mid-way case, the first was full blown case of maze moire in the tower, dropping the level of sharpening helps, here I've sharpening off. If I use RAW there's almost nothing in the trees but the tower is still just as bad. Bare in mind that I've only got a 50mm f/1.8 at the moment, how would you solve this? As I'm totally stumped.
Here's the full exif data


This looks like chromatic aberation (purple fringing), not moire'. If you also see it on the edges of leaves on the trees then it is also CA. This is generally a lens issue, and can be helped, to some degree, by smaller aperture settings.

If you kill the purple/violet in photoshop it should go away.

This is one of the reasons I rarely use 100% crop when reviewing pictures. If you print this picture I doubt that you would be able to see this effect even at 13 x 19.

I use my 50mm f1.8 frequently and have to admit I've not gone looking for problems, but pictures are clean and clear at normal viewing size. I have printed a couple (one of the desert with palms and blue sky) at 13 x 19 and they look great. If there is CA (or even minor moire') it doesn't make a difference in the print.

Advice: Don't look at your photographic creations at 100% crop. ;)