FujiFilm 100F manual Long and Multiple Exposure Compensation

FUJIFILM DATA SHEET • FUJICHROME PROVIA 100F Professional [RDP III]

NOTES

•The foregoing settings are for 2 hours after sunrise and 2 hours before sunset.

•Provide lens opening 1/2 stop smaller during the summer and 1/2 stop larger during the winter.

•Excessively bright (or dark) or backlit subjects may require plus or minus 1 stop lens opening adjustments.

Daylight

Under daylight conditions, color balancing filters are not necessary, but the following exposure conditions may require the indicated filters.

Subject Conditions	Filter	Exposure
		Correction
Fair weather open shade and shaded
landscapes.
	UV Filter
Bright distant scenes, snow land-
scapes, seaside scenes, aerial	No.2C*	None
scenes and open landscapes.	(SC-39 or
	SC-40)**
Close-ups of plants and subjects hav-
ing bright colors.

Excessively high or low subject color temperatures may require the following filter

additions and exposure corrections.

Subject Conditions	Filter	Exposure
		Correction
High Color Temperature :
Cloudy weather landscapes or por-	No.81A*	+1/3
traits under clear weather open	(LBA-2)***	stop****
shade.
Low Color Temperature :	No.82A* or	+1/3 to
Morning and evening twilight scenes	No.82C*	+2/3
	(LBB-2 or
and portraits.	LBB-4)***	stop****

* Kodak Filters

**Fuji Sharp-cut Filter

***Fuji Light Balancing Filter (not available in certain markets.)

****“+”= Lens opening

Electronic Flash

•Electronic flash produces light similar to daylight, so filters are not needed. However, the possibility of undesirable effects on color balance, due to various factors (differences in equipment, amount of use, etc.) should be taken into consideration and test ex- posure made.

•The use of a flash meter is advisable, but the follow- ing formula can also be used to obtain satisfactory lens opening.

Lens		ISO 100 Electronic Flash Guide Number
Aperture	=
		Electronic Flash-to-Subject Distance
(f-number)
		(meters or feet)

•Set the film speed at ISO 100. Since the amount of light reflected onto the subject from surrounding surfaces will differ with the conditions, refer to flash unit instructions.

Daylight Photoflood / Photo-Reflector Lamps

•Daylight-type photoflood or photo-reflector lamp

output tends to be lower than that indicated by an exposure meter, so it is advisable to compensate for this by increasing exposure time or the lens opening. Whenever possible, test exposures are recommended.

•Other factors requiring consideration when deter- mining the exposure time, are lamp configuration, use duration and line voltage, as they may affect lamp output and color balance.

Fluorescent Lamps

•The use of the following combinations of color com- pensating filters is advisable when photographing under fluorescent lighting.

•For exacting work, however, test exposures are rec- ommended because lamp make and age may af- fect light output and color balance.

(Exposure Time : 1/4 second)

Fluorescent	White	Daylight	Cool White	Warm White
Lamp Type	(W)	(D)	(CW)	(WW)
Color Compen-	25M+20B	30R+10M	35M	No.80B
sating Filters*				+15M+10R
Exposure	+1 stop	+1 stop	+1 stop	+2 1/3 stops
Corrections**

*Kodak Color Compensating Filters (or Fuji CC Filters) recom- mended.

**Exposure correction values include filter exposure factors. These values are added to unfiltered exposure meter readings. “+” followed by number = required increase in lens opening.

NOTES

•Use 1/30 or slower shutter speeds.

•For shutter speeds longer than 128 seconds, exposure ad- justments will be necessary to compensate for reciprocity failure.

Tungsten Lamps

•A Kodak Filter No.80A (or Fuji Light Balancing Filter

LBB-12) is recommended along with a 1 2/3 lens stop increase, when using 3200K tungsten lighting.

•If household tungsten lighting (room lamps, etc.) constitutes the main source of illumination, in addi- tion to the above filter a Kodak filter No.82A (or Fuji Light Balancing Filter LBB-2) is required, plus an aperture increase of 1/3 stop (total 2 stops).

Mixed Light Lamps

Under mixed light conditions, derive the basic filter con- figuration to suit the main light source.

5.LONG AND MULTIPLE EXPOSURE COMPENSATION

No exposure correction or color balance compensation is required for exposures within a 1/4000 to 128 seconds shutter speed range. However, for exposures of 128 seconds or longer, reciprocity-failure related color bal- ance and exposure compensations are required.

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