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Ricoh RDC-7

A 3 megapixel "Image Capturing Device" for mobile professionals with some unusual capabilities!

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Page 7:Shutter Lag & Cycle Time Tests
Review First Posted: 8/2/2000

Shutter Lag/Cycle Times
When you press the shutter release on a camera, there's usually a lag time before the shutter actually fires. This time allows the autofocus and autoexposure mechanisms time to do their work and can amount to a fairly long delay in some situations. Since this number is almost never reported on, and can significantly affect the picture taking experience, we now routinely measure it using a special electronic test setup.

RDC-7 Timings

Operation Time (secs) Notes

Power On -> First shot 2.34 Start with lens retracted. Time is delay until first shot captured.

Shutdown 1.9/2:33.0 Since no need to wait for lens to retract, "shutdown" is effectively zero. Times shown are those required to clear the buffer and finish writing to the card so it can be removed, at minimum resolution, and maximum/uncompressed TIFF mode.

Play to Record, first shot 1.23 Time is delay until first shot captured. (Pretty fast)

Record to play (max/min res) 4.32/1.37 High number is for max normal resolution JPEG, lower is for minimum resolution JPEG.

Shutter lag, full autofocus 1.24 Slightly slower than average

Shutter lag, manual focus 0.588 About average

Shutter lag, prefocus 0.278 About average

RDC-7 Cycle Times/Frame Rates

Mode Time
(Min:Secs) Frame Rate (frames/sec) Notes

Pro Mode 0:49/0:45/0:43 - Times are for "normal" PRO mode, fine/normal/economy JPEG. (NOTE that times are in Minutes:Seconds)

Pro Mode Uncompressed 1:47 - Time is for normal PRO mode, uncompressed. (NOTE that times are in Minutes:Seconds)

Pro-L Mode 0:41/0:49/0:47 - Time is for PRO-L mode, fine/normal/economy JPEG. (NOTE that times are in Minutes:Seconds)

Pro-L Mode Uncompressed 1:17 - Time is for PRO-L mode, uncompressed. (NOTE that times are in Minutes:Seconds)

Pro-H Economy 1:34/1:31/1:29 - Time is for PRO-L mode, fine/normal/economy JPEG. (NOTE that times are in Minutes:Seconds)

Pro-H Uncompressed 2:33 - Time is for PRO-H mode, uncompressed. (NOTE that times are in Minutes:Seconds)

Uncompressed L/M/S 0:34/0:12/0:06.8 - Time is for uncompressed file format, large/medium/small file sizes. (NOTE that times are in Minutes:Seconds)

L Fine 0:09.32 - Time is for large image at "Fine" JPEG quality setting. (Somewhat slow)

S Economy 0:04.34 - Time is for small image at "Fine" JPEG quality setting. (Somewhat slow)

L Fine Flash 0:14 - Flash recharge time increases cycle time somewhat.

S Economy Flash 0:10 - Flash recharge time increases cycle time somewhat.

LF Continuous 0:01.25 0.862 Somewhat slow, apparently no buffer memory.

SE Continuous 0:01.60 0.699 Oddly, is slower than the Large/Fine continuous mode.

Text Mode 14.0/6.2 - High/low resolution modes (Surprisingly fast for a "text" mode!)

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RDC-7 Timings
Operation	Time (secs)	Notes
Power On -> First shot	2.34	Start with lens retracted. Time is delay until first shot captured.
Shutdown	1.9/2:33.0	Since no need to wait for lens to retract, "shutdown" is effectively zero. Times shown are those required to clear the buffer and finish writing to the card so it can be removed, at minimum resolution, and maximum/uncompressed TIFF mode.
Play to Record, first shot	1.23	Time is delay until first shot captured. (Pretty fast)
Record to play (max/min res)	4.32/1.37	High number is for max normal resolution JPEG, lower is for minimum resolution JPEG.
Shutter lag, full autofocus	1.24	Slightly slower than average
Shutter lag, manual focus	0.588	About average
Shutter lag, prefocus	0.278	About average

RDC-7 Cycle Times/Frame Rates
Mode	Time (Min:Secs)	Frame Rate (frames/sec)	Notes
Pro Mode	0:49/0:45/0:43	-	Times are for "normal" PRO mode, fine/normal/economy JPEG. (NOTE that times are in Minutes:Seconds)
Pro Mode Uncompressed	1:47	-	Time is for normal PRO mode, uncompressed. (NOTE that times are in Minutes:Seconds)
Pro-L Mode	0:41/0:49/0:47	-	Time is for PRO-L mode, fine/normal/economy JPEG. (NOTE that times are in Minutes:Seconds)
Pro-L Mode Uncompressed	1:17	-	Time is for PRO-L mode, uncompressed. (NOTE that times are in Minutes:Seconds)
Pro-H Economy	1:34/1:31/1:29	-	Time is for PRO-L mode, fine/normal/economy JPEG. (NOTE that times are in Minutes:Seconds)
Pro-H Uncompressed	2:33	-	Time is for PRO-H mode, uncompressed. (NOTE that times are in Minutes:Seconds)
Uncompressed L/M/S	0:34/0:12/0:06.8	-	Time is for uncompressed file format, large/medium/small file sizes. (NOTE that times are in Minutes:Seconds)
L Fine	0:09.32	-	Time is for large image at "Fine" JPEG quality setting. (Somewhat slow)
S Economy	0:04.34	-	Time is for small image at "Fine" JPEG quality setting. (Somewhat slow)
L Fine Flash	0:14	-	Flash recharge time increases cycle time somewhat.
S Economy Flash	0:10	-	Flash recharge time increases cycle time somewhat.
LF Continuous	0:01.25	0.862	Somewhat slow, apparently no buffer memory.
SE Continuous	0:01.60	0.699	Oddly, is slower than the Large/Fine continuous mode.
Text Mode	14.0/6.2	-	High/low resolution modes (Surprisingly fast for a "text" mode!)