Monday, November 12, 2007
Before we talk about those 2 modes lets talk about the program line as that setting is the basis on how the camera will compensate for exposure changes.
PROGRAM LINE (pg 145 user manual)
Located in the main menu under custom settings, the program line is used to tell the camera what exposure setting in the camera you want to prioritize. What the camera does then (if it can) is to hold the program line setting and adjust the other exposure values to compensate.
Here's an example. Say you want maximum depth of field in your photos, then set the program line to depth of field. Now when the camera goes to set the exposure it will try to set the maximum aperture it can with the available light.
(edit 24 Nov 2007 11:14am) I tried the DoF setting in program mode and apparently it works opposite of what I had envisioned. It seems to keep the aperture set to minimum. I will experiment more and let you know in a later post. (edit)
The other settings are for high speed shutter priority and modulation transfer function (MTF).
High speed shutter is just that, the camera tries to give you the fastest shutter speed possible under the lighting conditions.
MTF needs a little explaining and is only available for certain (newer) lenses. Modulation transfer function is used to find the sweet spot using the data (focus distance/focal length/aperture) obtained from the lens. I assume the camera has a built in table of this data and this setting will try to set the lens to the optimum aperture for the focal length and focus distance. Those who are not so happy with the quality of the kit lens might try this program line setting.
So the program line setting will depend on what you are shooting, sports - high speed, macro - DoF, or MTF - best quality from the lens.
The green mode automatically adjusts the aperture and shutter speed according to the program line setting. The photographer has no control as this feature is totally automatic and bases it's settings purely on the program line. You can't even do exposure compensation (EV) in green mode. But that's fine if you just want to shoot pictures and not worry about the camera settings, your typical point and shoot scenario. This mode is not available with manual lenses. Although I managed to get my camera to fire the exposure was underexposed.
P or HYPER PROGRAM MODE
This mode gives the photographer a little more freedom with exposure settings. While in P mode you can adjust exposure compensation with the front dial while holding the +/- button, shutter speed with the front dial, and aperture with the rear dial. When you change one setting the others, depending on program line, will adjust to compensate. This mode is also not available on manual lenses. Although I managed to get my camera to fire the exposure was underexposed.
Sv or SENSITIVITY (ISO) PRIORITY
Sv mode is another fairly automatic mode that limits the photographers ability to make adjustments. It does not use the program line to determine the computed settings. The photographer is only allowed to adjust the exposure compensation EV setting. The way this mode works is the photographer sets the ISO level and the camera sets the shutter speed and aperture to the proper exposure. This mode is also not available on manual lenses. Although I managed to get my camera to fire the exposure was underexposed.
Tv SHUTTER PRIORITY
Tv mode works like on any other DSLR. The photographer sets the shutter speed manually and the camera adjusts aperture and ISO (if on auto ISO mode) to the correct exposure. This mode is also not available on manual lenses. Although I managed to get my camera to fire the exposure was underexposed.
Av APERTURE PRIORITY
Av mode also works like any other DSLR. The photographer adjusts the aperture with the rear dial and the camera adjusts the shutter speed and ISO (if in auto ISO mode) to the correct exposure. This mode is also not available on manual lenses. Although I managed to get my camera to fire the exposure was underexposed.
TAv SHUTTER AND APERTURE PRIORITY
The TAv mode is a combination of the Tv and Av modes. The photographer adjusts the shutter speed and the aperture with the front and rear dials and the camera adjusts the ISO to the correct exposure. This is nice to have the camera do automatically as many advanced photographer did this manually before and had to go a few levels deep in the menus to change it each time. This mode is also not available on manual lenses. Although I managed to get my camera to fire the exposure was underexposed.
M MANUAL MODE
Manual mode is just that. The photographer sets the shutter and aperture and ISO to what they think is appropriate. The camera will let you know if the exposure settings are incorrect and by how much. If you have a manual lens, the little green dot button just to the left of the shutter button will set the shutter speed according to the meter reading after the aperture is stopped down. When you press it you will here a brief swish-swish sound of the aperture blade moving. This is the mode to use on all manual lenses.
B BULB MODE
Bulb mode is used when taking photos of an undetermined amount of time or a time longer than the cameras minimum shutter speed. It is used mainly for astrophotography, fireworks, and any long period of time for light painting but has many other uses only limited by the photographers imagination. This mode is compatible with manual lenses.
X X SYNC
X Sync mode is used to set the camera to a shutter speed of 1/180, the K10D's maximum flash sync speed. When a non compatible/non high speed flash is connected to the camera the shutter speed will not be able to be set higher than 1/180. Personally I think this is a severe limitation of the K10D and severely limits the use of flash when trying to over power the sun in bright daylight situations. So far this is the only major gripe I have with the K10D. If I find a way to bypass this through the camera's debug mode I will pass that info on.
The user mode is recalls settings from memory that the photographer has stored. There is only one memory location so only one set can be stored at a time. These settings can be adjusted on the fly while in user mode.