Scala di messa a fuoco sulla 5700

[mickey]

Lo starting point (2.1 mt) è appena toccato il simbolo con la montagna, unica accortezza e che se lasciate il tasto della messa a fuoco, non dovete contare il primo giro della ghiera


Da steve digicams forum Nikon talk ho trovato questa indicazione per la messa a fuoco manuale:

I've copied a previous reply that I posted about this several days ago:

After years of using a Nikon SLR (film) camera, I started taking digital photos with my first digital camera, a CP 5700. Since I had not used any other digital cameras, I had no preconceived notions about how they should function or unusual expectations of the CP 5700. After 3 months of using it, I've found that it is a remarkable camera that can take good photos under all conditions in which I've used it.

Take low-light, or, low-contrast conditions, for example. There have been many complaints about the CP 5700's lackluster performance under these conditions. If you go into Shooting Menu #2, select Focus, and then turn AF Area Mode to Off, you'll find that the 5700 will lock on focus when the light is very dim. This is due to the camera selecting the central area, or most sensitive area, as its focusing area.

If this fails you, then resort to Manual Focusing. Just depress the MF Button on the left side of barrel, hold it down and rotate the Command Dial. You will see the Manual Focusing Bar move to the right or left as you rotate the bar. Rotate the Command Dial until the white bar just reaches the "Mountains" on the right side. The 5700 is now focused at 7 feet. Turn it one more click counterclockwise (CCW) and the 5700 is focused at 8 feet. Another click counterclockwise and it's focused at 9 feet. Turn it one click clockwise (CW) from the 7 foot starting point and the 5700 is focused at 6 feet.

Drawing upon information that others had written, I compiled a table, which I shared on the Nikon Talk Forum. If you didn't see it there, here it is:

From starting point: MF Bar set at ~~~Flower[][][][][][]Mountain
where CP 5700 is focused at 7 feet,

CW Clicks-------------------Focus Distance, feet
4-----------------------------------5 feet
1-----------------------------------6
0-----------------------------------7

CCW Clicks-----------------Focus Distance, feet
1-----------------------------------8 feet
2-----------------------------------9
3----------------------------------10
4----------------------------------13
5----------------------------------16
6----------------------------------23
7----------------------------------33

Remember that when you take your finger off the MF Button and then depress it again, the first click (either CW or CCW) won't change the focus distance. It just restores the White Bar to the screen. Assume that you focused manually at 7 feet and took your finger off the MF Button. If you wish to change the focus to 8 feet, you have to depress the MF Button again and rotate the Command Dial 2 clicks CCW.

This method of manual focusing works almost as well as if the CP 5700 had manual focusing numbers on the lens barrel. Using this system for flash photos, you can estimate the distance to your subject, set the focus distance by MF Button-Command Dial and take your photo. You'll get a well focused shot just about every time. Of course, the photo will be as good as your estimate of the distance and other factors, like the depth of field. If you're not sure of your estimate, just change the focusing distance manually so that you take a photo on each side of your estimated distance. You can take well-focused photos in almost total darkness with this method.

I don't know why the writers of the CP 5700's manual did not include information such as this table of manual focusing distances relative to clicks of the Command Dial. If they had included tables such as this one, there might have been fewer complaints about the 5700's lack of an AF Assist Light, and slow focusing lock under low-light conditions.

For those of you who think in Metric terms, here's the table in Metric Units.

From starting point: MF Bar set at~~~Flower[][][][][][]Mountain
where focus distance is 2.1 meters

CW Clicks--------------------Focus distance, meters
4-------------------------------------1.5 meters
3-------------------------------------1.6
2-------------------------------------1.7
1-------------------------------------1.9
0-------------------------------------2.1

CCW Clicks------------------Focus distance, meters
1-------------------------------------2.4
2-------------------------------------2.8
3-------------------------------------3.0
4-------------------------------------4.0
5-------------------------------------5.0
6-------------------------------------7.0
7------------------------------------10.0

Try it. It will prove to you that the CP 5700 does not have any low-light focusing problem.