Black Corners from D7

Hi there,

I have been doing quite a lot of desert shots with the D7, and have noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a shooting flaw, a hardware bug, software glitch or simply a case the photographic equivalent of the classical EFBCAK (error found between chair and keyboard??)

Thanks for your help.

Chris

Hi Chris.

It looks like vignetting. At which focal lengths do you get the problem? Did you use any filters (that may enhance vignetting)?

Regards, Maxven

Chris Khouri said:

Hi there,
I have been doing quite a lot of desert shots with the D7, and have
noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a
shooting flaw, a hardware bug, software glitch or simply a case the
photographic equivalent of the classical EFBCAK (error found
between chair and keyboard??)

Thanks for your help.

Chris

Click to expand...

It seems like your lens shade wasn't seated in position.

Jeff

Chris Khouri said:

Hi there,
I have been doing quite a lot of desert shots with the D7, and have
noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a
shooting flaw, a hardware bug, software glitch or simply a case the
photographic equivalent of the classical EFBCAK (error found
between chair and keyboard??)

Thanks for your help.

Chris

Click to expand...

I was indeed using the lens shade. But I used it the whole day without moving it, and only had problems with a few shots.

I did not use any filters, setting were:
lens focal length 7.4mm, 1/750 F8.0 on iso 100

Chris

Jeff Tokayer said:

Jeff

Chris Khouri said:

Hi there,
I have been doing quite a lot of desert shots with the D7, and have
noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a
shooting flaw, a hardware bug, software glitch or simply a case the
photographic equivalent of the classical EFBCAK (error found
between chair and keyboard??)

Thanks for your help.

Chris

Click to expand...

Click to expand...

It could be the lens shade was off but only shows up when you are shooting at wide angle. At normal or telephoto shots it would not show in the pictures. You may want to shoot some test shots. The reason it looks like the lens shade is the the dark areas are not in line with the picture. Try shooting pictures of the sky it would show up better.

Ron

Chris Khouri said:

I did not use any filters, setting were:
lens focal length 7.4mm, 1/750 F8.0 on iso 100

Chris

Jeff Tokayer said:

Jeff

Chris Khouri said:

Hi there,
I have been doing quite a lot of desert shots with the D7, and have
noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a
shooting flaw, a hardware bug, software glitch or simply a case the
photographic equivalent of the classical EFBCAK (error found
between chair and keyboard??)

Thanks for your help.

Chris

Click to expand...

Click to expand...

Click to expand...

Chris Khouri said:

Hi there,
I have been doing quite a lot of desert shots with the D7, and have
noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a
shooting flaw, a hardware bug, software glitch or simply a case the
photographic equivalent of the classical EFBCAK (error found
between chair and keyboard??)

Thanks for your help.

Chris

Click to expand...

As others in here have told you, it might very well be that your lens shade was not in position. The vignetting only shows when using wide-angle.

I experienced this myself some months ago. In the manual it says that the little "dot" on the lens-shade has to be aligned with the black line on the lens.

When I first put on the lens shade I was afraid to use a little force to get the lens shade in position, but as I found out, it reall needs a little force and then it will click in to position where it is indeed EXACTLY aligned with the black line on the lens. Make sure though that you have put on the shade correctly before you start screwing it (ehh is this the right term? - excuse my english but I guess you get the meaning).

Hope this prevents vignetting in the future.

Regards
Per Michael Knudsen

Per Michael Knudsen said:

Chris Khouri said:

Hi there,
I have been doing quite a lot of desert shots with the D7, and have
noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a
shooting flaw, a hardware bug, software glitch or simply a case the
photographic equivalent of the classical EFBCAK (error found
between chair and keyboard??)

Thanks for your help.

Chris

Click to expand...

As others in here have told you, it might very well be that your
lens shade was not in position. The vignetting only shows when
using wide-angle.
I experienced this myself some months ago. In the manual it says
that the little "dot" on the lens-shade has to be aligned with the
black line on the lens.
When I first put on the lens shade I was afraid to use a little
force to get the lens shade in position, but as I found out, it
reall needs a little force and then it will click in to position
where it is indeed EXACTLY aligned with the black line on the lens.
Make sure though that you have put on the shade correctly before
you start screwing it (ehh is this the right term? - excuse my
english but I guess you get the meaning).

Hope this prevents vignetting in the future.

Click to expand...

I see no real use for the orginal Dimage shade - it blocked the built-in flash at wide angle and using a polarizer is traumatic..

I stepped-up my D7 filter thread using 49-55mm adapter. Now all my filters and attachments of 55mm dia are fully usable on all focal lengths!

Emil

Chris,

As everyone else has said: You'll find that it takes a noticeable amount of effort for the hood bayonet to latch ("clonk") into the correct position. Don't be afraid to apply this effort, the lens is very stong. If you want to be extra safe, wind the lense extension all the way back in to 28mm (equiv) before fitting or removing the lense hood.

It is interesting to note that, although you might expect to see the vignetting in the viewfinder while taking the shot, the reason you don't is beacuse the camera aperture is most likely at f2.8 during pre-shot, then closed down to f8.0 for the exposure proper. So the lense hood petals were very blurred/diffuse while viewing, but came into much sharper focus when the aperture is stopped down during the exposure.

You should only be getting this problem when the lense hood was misaligned, combined with wide angle focal length zoom position. The 7.4mm you quote below is of course approx 29-30mm (equiv).

Mark H.

Chris Khouri said:

I did not use any filters, setting were:
lens focal length 7.4mm, 1/750 F8.0 on iso 100

Chris

Jeff Tokayer said:

Jeff

Chris Khouri said:

Hi there,
I have been doing quite a lot of desert shots with the D7, and have
noticed black corners on some of the pictures.
(stricking exemples below)

Did anyone experience this as well? Is it a setting error, a
shooting flaw, a hardware bug, software glitch or simply a case the
photographic equivalent of the classical EFBCAK (error found
between chair and keyboard??)

Thanks for your help.

Chris

Click to expand...

Click to expand...

Click to expand...