what have I done here? weird concentrated blurring

[pixelbasher]

I went out to the airport the other day and overall got some decent shots, but this one has me thinking about what I did wrong to avoid for the future.

Is this simply a rotational movement I induced causing the tail area to blur more than the rest of the plane? It just seems odd so thought I'd post it here to let you guys take a look.

The first is the original frame, (only just got it all in LOL!) the second is a closer crop to show what I mean about the blurring.

My subjects were mainly hornets and hawks so I went pretty fast on the shutter for them as insurance, but when this one approached I went to 250th and F11. Focal length was 100mm

I can see where there is a bit of movement on the whole plane so it certainly isn't perfectly sharp, it's just the tail is more than the rest of the image.

It just seems odd as I have never got one like this before, normally when I screw a shot through movement, I screw all the shot!

It was a bit windy so I pulled out the monopod to help combat some buffeting I was getting when I first started shooting for the day.

Cheers

[us2000iceman]

Are you sure it wasn't the plane moving around? maybe the pilot hit some rudder correction for a crosswind just as you shot ? did you other shots show a similar effect ? interesting for sure

[DC Fan]

There's nothing "wrong." That's what happens when you take pictures of moving objects. If things move, there's a chance of minor technical imperfections. If you want totally perfect images, find things that don't move.

[pixelbasher]

If things move, there's a chance of minor technical imperfections. If you want totally perfect images, find things that don't move.

Yeah, thanks for that.

Are you sure it wasn't the plane moving around?......did you other shots show a similar effect ? interesting for sure

us2000iceman: This is the only one that showed it, but as there was only one prop plane on the day I was back up to a faster shutter for the rest of them. It is interesting for me too because I haven't seen this sort of thing before in any of my shots. I am just curious more than anything.

It's like I have rotated the camera to cause this, or as you said the plane has shfted it's tail around as I took the shot. I'd prob have to go for the former though. The plane was pretty smooth on approach, even with the wind, which was straight down the runway. Maybe it was a sudden pitch movement from the plane.
Either way, it's no biggie, just thought I'd throw it up for some ideas.

Cheers

[PhotosGuy]

It could be any of those. Or an uneven pan when the shutter reached the tail.

[FlyingPhotog]

*Cough*

Engine Exhaust...?

*Cough*

[pixelbasher]

It could be any of those. Or an uneven pan when the shutter reached the tail.

Now that's an interesting thought. Even at 250th? How does the actual scan take place in a DSLR ?


*Cough*

Engine Exhaust...?

*Cough*


You got that cough that's going around too photog? :lol:

Seriously, that is a VERY good point though, I didn't even think of that.

[ironchef31]

I think it's motion blur. If you look at the VH-SBT the horizontal lines are sharper than the vertical lines. This is consistent with the object moving from the left of the frame to the right. You don't notice it as much on the front of the plane because there are no similar type lines on the plane.

[PhotosGuy]

How does the actual scan take place in a DSLR ? I don't know about digital. Here's the effect from a film Nikon:

http://img.photobucket.com/albums/v218/PhotosGuy/Samples%20-%20Rides/F1-Blur-06.jpg

[pixelbasher]

Sorry photosguy, noob alert, I'm not sure what I'm supposed to be looking for here. I can see the head fairly sharp, and a bit of horizontal blur on the rest of it, but I'm going to need to have the technicalities of that shot explained.......if you don't mind of course!

[Mark Vuleta]

Not sure if the extent would also apply to the aircraft but the car effect is fairly well explained here:

http://photography-on-the.net/forum/showthread.php?t=487139

[PhotosGuy]

I'm not sure what I'm supposed to be looking for here. Marks link explains it. As the shutter traveled across the film, the pan speed was right on for the helmet, & slightly too fast/slow for the rest of the shot.