JakTrax From United Kingdom, joined Jun 2005, 4936 posts, RR: 7 Posted (3 years 1 month 1 week 4 days 8 hours ago) and read 4247 times:
First, no - I ain't switched to Nikon! This is for a friend who is having a bit of an issue.....
He's recently taken some sunny, blue sky shots of aircraft in the air and has noticed a curious halo around the subject on every shot. This is on the originals as they've not been edited (before anyone suggests over-use of shadow/highlight in PS). He's pretty sure he shot everything as he normally does.
Anyone have an idea what's gone wrong here? Can only think it's the settings but I can't off-hand think what could have caused such an effect.
dendrobatid From United Kingdom, joined Nov 2004, 1630 posts, RR: 63 Reply 6, posted (3 years 1 month 1 week 4 days 6 hours ago) and read 4170 times:
AIRLINERS.NET CREW HEAD SCREENER
The person I helped out last week found that it is the default setting.
I spoke to a wedding photographer at the weekend, a long-term Nikon user, one of a group that are sponsored by Nikon (ie excellent) and she told me that though the function is fitted to most cameras, even the D3, it is the default setting only on the lower end models.
In that other thread, I commented that aircraft, particularly against a sky are probably about the worst type of subject for Active D and she agreed. It can be useful on more normal subjects though creating a rather false look, as so often happens with shadow/highlight too,
I suspect that he will have no more problems once that is turned off.
iamlucky13 From United States of America, joined Aug 2007, 232 posts, RR: 0 Reply 7, posted (3 years 1 month 1 week 4 days 6 hours ago) and read 4169 times:
I can't confirm right now, but I don't think the D70 even has D-Lighting. I know it doesn't have "Active" d-lighting, which intentionally underexposes the image to brighten in the JPG conversion, but I'm not sure about the older version.
Seeing a sample would help.
Is it a light halo or dark halo? Is it colored at all? I've seen funny effects from thin layers of oil (like from skin) on a lens. My gut tends that direction...
dvincent From United States of America, joined Jan 2007, 1730 posts, RR: 11 Reply 10, posted (3 years 1 month 1 week 3 days 10 hours ago) and read 4049 times:
Using a UV filter? Take it off and see if it makes a difference.
Halos can happen for a variety of reasons. In image capture it can occur via optics or sensors and on the post side it could be produced by overzealous auto-processing. Are you looking at JPEGs or RAWs? RAWs should have no processing applied by the camera for things like D-lighting, if the camera does have it.
The D70 has an older Sony 6MP CCD sensor (similar to the one I had in the KM 5D) which was prone to blooming or haloing under certain conditions. Can you post an example of the halo?
Numero4 From Canada, joined Feb 2010, 260 posts, RR: 0 Reply 11, posted (3 years 1 month 1 week 3 days 9 hours ago) and read 4041 times:
+1 on the UV-filter.
I have had weird halos (non-defined/non-pixelated halos) with a badly cleaned filter, ie with finger grease smeared over the filter. I solved the issue when I bought a new, better filter and have not had this problem since. I took good care of it by cleaning it with the appropriate equipment.