
The X100 shoots amazing photos, in general, and some of the best low-light pictures of any compact camera — it looks the part too. You can read our in-depth real world review here. Unfortunately, it’s not a speed demon; specifically, auto focus, startup time and SD card write speeds are relatively slow. This means that it’s not the ideal action shooter.
Nevertheless, there are things that you can do to get the camera to perform faster. The X100 includes a ‘Quick Start Mode’, which Fuji claims to reduce startup time to about 0.7 seconds compared to about 2.2 seconds when the mode is off. This mode is accessible on page 3 in setup. Fuji however, warns that, setting the mode to on will drain your battery, reducing the number of shots per charge.
It’s also been suggested that a fast SD card will help reduce startup times and of course file write times. So, with this suggestion we set out to test the X100′s performance with three different SD cards: a top of the range SanDisk Extreme Pro card claiming 45MB/s write speeds, a SanDisk Extreme III card with 30MB/s write speeds and finally a cheaper Transcend 16GB Class 10 card.
We measured the amount of time between switching the camera on and the camera becoming responsive, i.e. being able to focus, first, with the quick start mode off, and again with the quick start mode on for each of the three SD cards.
Then, we shot eight continuous RAW files, with each of the cards, in burst mode, and measured the time between pressing the shutter button, taking the 8 shots and the camera becoming responsive again, after writing the files to the SD card.
You can see the results, of our lengthy tests, below — note that we examined the video of our tests in slow-motion to assess the time better and avoid reaction time errors:

With regards to startup time, SD card speed plays a subtle, yet important role, if a few tenths of a second matter between getting the perfect shot or nothing at all. There is no surprise that enabling the quick startup mode results in a considerably shorter startup time of 2.2 seconds, with the fastest card. It makes sense to have the quick startup mode enabled and carry an extra battery if you are out and about shooting. We haven’t been able to test the extra drain on the battery of having the mode enabled, as this will depend on a number of variables, such as how many times you switch the camera on/off, how long you take between shots, etc.
Note, if your X100 camera takes an inordinate amount of time to startup, make sure you format the SD card with the camera

In the multiple RAW file write test, the camera remained inoperable for a whole 9 seconds longer with the Transcend card compared to the SanDisk Extreme Pro. If you rarely shoot in burst mode, then SD card performance is less important; but if you do shoot in burst, then opt for a faster card.
Finally, below you’ll find our jerky and unrefined test video for your enjoyment:
Story Timeline
- Jul 30 2012 Fujifilm X100 discontinued, making way for the X200?
- May 20 2012 The Fujfilm X100 is beautiful on the inside too
- May 15 2012 Fujifilm announces 28mm equivalent wide angle conversion lens and v1.30 firmware for X100
- Apr 15 2012 Manfrotto Nano VI and VII camera pouch review: budget, stylish protection for your mirrorless camera
- Mar 23 2012 Fujifilm X100 v1.20 firmware update brings control refinements and AF improvements
- Mar 09 2012 Fujifilm X100 Black Limited Edition shipping now for $1,699.95
- Mar 05 2012 Fujifilm FinePix X100 digital camera real world review
- Feb 19 2012 Your Fujifilm X100 overexposes images? How to check for the sticky aperture blade issue (video)
- Feb 09 2012 Fujifilm X10 v1.03 firmware update released, brings a bunch of improvements
- Jan 31 2012 Fujifilm sold 100,000 X100 cameras in nine months
- Dec 27 2011 Our favorite gadgets from 2011
- Nov 07 2011 Panasonic GX1 vs. Sony NEX-7 vs. Fujifilm X100 vs. Olympus E-P3 comparison
- Oct 20 2011 Fuji updates FinePix X100 to v1.11 with better macro auto-focus and fixes
- Aug 29 2011 Sony Alpha A77 vs. A65 vs. NEX-7 vs. Fujifilm Finepix X100 comparison
- Aug 24 2011 Sony NEX-7 vs. Fujifilm X100 vs. Olympus E-P3 vs. Panasonic DMC-GF3
- Aug 22 2011 Fujifilm FinePix X50 to be the smaller and more affordable zoom brother to the X100 camera
- Jun 24 2011 Fujifilm FinePix X100 gets firmware update to v1.10







