altbg From United States of America, joined Jan 2013, 27 posts, RR: 0 Posted (4 months 3 weeks 2 days 16 hours ago) and read 3291 times:
I bought the Sigma 150-500 5-6.3 APO HSM and a Nikon D7000 at the beginning of this year and I just haven't been able to get crisp shots with that lens. I've been toying around with many of the settings and while the pictures seem to get better, I am not able to get anything without heat haze showing, even when the aircraft is fairly close. If it was just heat haze I would be ok, but I think there's more to it. Here's an example of what I'm talking about. These images are not procesed, simply cropped and converted from raw to jpg.
What is going on here? Is my Sigma lens bad? Is there an easy explanation? Just today I had the same issue. Almost all of my shots had these wavy lines in them while my co-workers shots from the same spot right next to me are crisp and sharp so it can't be heat haze, can it?
clickhappy From United States of America, joined Sep 2001, 9549 posts, RR: 70 Reply 1, posted (4 months 3 weeks 2 days 15 hours ago) and read 3274 times:
AIRLINERS.NET CREW PHOTO SCREENER
I can't think of anything other than heat haze that would cause distorsion like that. You say both photos were taken at the same time? How does your lens perform up close? Can you shoot something like a brick wall, from say 10'? From a tripod would be even better.
altbg From United States of America, joined Jan 2013, 27 posts, RR: 0 Reply 2, posted (4 months 3 weeks 2 days 2 hours ago) and read 3209 times:
Both shots were taken within two minutes of each other, at around 9:50 am. The heat haze is there of course (even though I wish it wasn't), but it seems to be a lot more noticeable with the Sigma 150-500 even at 150mm.
It just struck me yesterday when my co-worker opened up his shots in Camera Raw and they were sharp with zero heat haze showing, and when I opened up mine I wanted to just send them to the Recycle Bin.
I'll try to do some test shots this weekend. I'm also not too happy with the focusing of the camera so hopefully I can work that out at the same time. Being a beginner isn't helping in that regard. I have taken close to 3000 shots now with that camera set up and so far I haven't had a single one that made me go "wow, this one is great".
Was the aircraft in the EXACT same location when you shot it with each lens? Had another aircraft passed by? Were the engines/APU running in one shot, and not running in another? Is there a building in between you and the aircraft that could have an exhaust on top of it (happens all the time when I shoot at LAX)?
"Two and a Half Men" was filmed in front of a live ostrich.
Comparing the objects/patterns in the background in those two photos indicates that it is. If it's not the lens, one thing it could be is distortion caused by another aircraft between the lens and the plane (that changed position between the two shots).
Does the lens behave this way in all environments (ie at home) or just on this occasion?
altbg From United States of America, joined Jan 2013, 27 posts, RR: 0 Reply 7, posted (4 months 2 weeks 5 days 21 hours ago) and read 2979 times:
I would post the uncropped shots, but I am at work right now and don't have access to them. However, I looked at them again over the weekend and there was a 747 parked to the right of the 737 - and the APU was running. A slight shift in wind probably just caused that one shot to be clear. I totally didn't think about the APU. I feel like an idiot now.
I also looked closer at my co-workers shots from last week and there is some heat haze visible on his shots as well which makes them very similar to mine in that regard. However, the sharpness just isn't there in my shots. I shot mostly at f8, 150 mm, ISO 200, and got shutter speeds from 1/600 to 1/1200 - and not a single one was particularly sharp. I also tried to do some AF fine tuning but wasn't happy with the whole process. Nowhere in those shots I took did I see a really clear and sharp area. I am not sure what to do next.
dcaviation From United States of America, joined Aug 2011, 186 posts, RR: 0 Reply 8, posted (4 months 2 weeks 5 days 3 hours ago) and read 2936 times:
I had my camera for couple of weeks before I sent it to Melville NY for repair. They were trying to tell me that I shoudl mess with Fine tune AF, but that didn't help a lot. All of my pictures were soft. I've sent it to Nikon, waited 2 weeks for my camera to return and after they made adjustments to AF it takes pin sharp photos even with Sigma 150-500mm.
If your camera is still under warranty I would just login to the Nikon support page, create troublecall ticketm and send the camera to them.
Out of focus, softness, backfocus are the very common D7K problems. Nikon wont admit that they did something wrong, but read the D7K forum on flickr and you will see that every other post is about out of focus pictures.
altbg From United States of America, joined Jan 2013, 27 posts, RR: 0 Reply 9, posted (4 months 1 week 3 days 23 hours ago) and read 2681 times:
I did some spotting at LAX this past weekend and shot with three different lenses, and I would say only a handful might be salvageable with lots of post-processing. Here are some examples of what the majority of my shots look like:
Is it save to say that it is not a lens issue but more likely to be either camera and/or user? I changed the metering from spot to matrix which seemed to give me better exposures. So at least that helped I think.
I just can't see any area that is actually in focus.
Yes, the lightning definitely wasn't optimal, it was already too late in the morning, around 11am I think. I have some better sunset pictures from the In-n-Out Burger area, but those seem out of focus as well.
otooleg From UK - Scotland, joined May 2012, 11 posts, RR: 0 Reply 12, posted (4 months 6 days 7 hours ago) and read 2484 times:
The softness of your shots with the 150-500 which I understand has an IS system is worrying as someone who would like to purchase this lens? I am unsure whether it is camera shake that is causing your softness?
dcaviation From United States of America, joined Aug 2011, 186 posts, RR: 0 Reply 14, posted (4 months 6 days 5 hours ago) and read 2483 times:
Its the camera fault, not the lens. As you can see I had exactly the same problem with my D7000. These pictures above were taken with 70-300mm lens, but Sigma produced exactly the same results.
Now after my camera is back from repair I take sharp shots with 150-500mm and my IS is on all the time.
The only time when I don't use IS is when I shoot from the tripod.