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location ND
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visits member for 11 months
seen Feb 3 at 20:14
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Jun
12
comment Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
Thanks for the analysis, Matt! It explain why the problem might be caused by the lens (possible problem with aperture control). I found a number of forum threads mentioning that this may be due to a problematic lens (see my last comment on the main question). BTW I used JPEG when shooting these (I wanted to make sure that the EXIF data is preserved), but I get the same effect when shooting RAW. I'll accept this answer in a couple of days if nothing else comes in.
Jun
12
comment What is HDR photography?
The sample photo you included has a dynamic scene. The waves are always moving. I'm wondering how it is possible to take several photos and blend them in this case: the waves should look different in each one. Or was this shot taken with a camera that can take a series of shots extremely quickly?
Jun
12
awarded  Commentator
Jun
12
comment Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
The result is the same regardless of the metering mode I use. But for the test shots I linked to I did use matrix metering mode (actually I mentioned this in the question).
Jun
11
comment Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
@Dan I found a number of forum threads suggesting that when there's a problem with exposure, it might be due to the lens. It is not completely clear to me why this might be, though.
Jun
11
comment Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
@Dan Do you mean that the lens may be faulty and the aperture is not being changed properly? This is not the case for the following reasons: 1. I can see that the aperture is narrowed during a shot when looking into the lens 2. if that were the case, the photo with the slower speed should be brighter, but in fact it's darker. 3. the change in depth of field is clearly visible when shooting with different apertures (i.e. what you asked about). These test shots were just made off the terrace, and focused on infinity.
Jun
11
comment Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
@Mike I played a little more: I fixed the AF, I made sure the camera wouldn't move between shots and I tried different metering modes (spot & matrix). A narrower aperture always gives a darker picture. Meanwhile someone in chat said they can't reproduce this behaviour, so it must be specific to this camera I have here. I am now wondering if every Nikon D60 has this problem (with a similar lens), or if something got broken in the metering of the camera.
Jun
11
comment Looking for camera control software (for Nikon DSLR) to shoot time lapse
Of course, it didn't occur to me to use a trial version. It should be good for playing a bit
Jun
11
comment Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
@Mike The ISO was fixed (it's always fixed in A mode on this camera). The shutter speed is adjusted by the camera, but it does not balance out the aperture change perfectly: I consistently get a darker shot when the aperture is narrow. In fact, the owner of this camera (it's not mine) mistakenly believed the the aperture is used for adjusting brightness in A mode. I did not know that the AF point can have an effect, so I'll try t fix it as you suggest, but since the brightness of the result is consistently linked to the aperture, I don't expect it'll make a difference.
Jun
11
awarded  Editor
Jun
11
revised Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
added 104 characters in body; edited title
Jun
11
comment Looking for camera control software (for Nikon DSLR) to shoot time lapse
I'm looking for free solutions if there are any, but for a little experimenting a trial version will do as well (I didn't think of this option before). Thanks for the pointer!
Jun
11
awarded  Supporter
Jun
11
comment Looking for camera control software (for Nikon DSLR) to shoot time lapse
Thanks for the pointers. This would be a good solution if I were doing this often. But since I'd just like to experiment a little bit, a hardware solution is too expensive. The one you linked to is 50 eur + shipping. I am looking for free solutions (this is why I wanted to use software), if any are available (other than DIYPhotoBits Camera Control)
Jun
11
asked Is it usual that a narrow aperture gives a darker picture in aperture priority mode?
Jun
11
awarded  Student
Jun
11
comment Looking for camera control software (for Nikon DSLR) to shoot time lapse
@Dan To answer question 2: the camera automatically increased exposure time to 8 seconds because I started to shoot in sunshine and finished in darkness (it gets dark very quickly here). I don't see any way to avoid getting the exposure time in the 1+ second range, but again: suggestions welcome! I used fixed aperture and let the camera adjust the speed. If I used a fixed speed, I'm afraid adjusting the aperture wouldn't be enough to avoid underexposure after it gets dark (or overexposure during sunshine). AFAIK this camera can't adjust the ISO in A or S mode.
Jun
11
comment Looking for camera control software (for Nikon DSLR) to shoot time lapse
@Dan I simply want to shoot time lapses. The camera has no built-in support for this (possibly because of the finite shutter life), so I used a computer to make a shot every 10 seconds. The problem with the software I used for this was that it didn't compensate for the increasing shutter speed (so in the end I had a frame every 18 seconds). I'm looking for a solution that avoids this problem. I don't see any other way than using a computer to control the camera or standing there myself with a stopwatch and pressing the button every 10 seconds.
Jun
11
asked Looking for camera control software (for Nikon DSLR) to shoot time lapse