You can do a test with a Class 1 sound level meter (I have one) and get an "official" hard number but that will not really measure the peak impulsive sound pressure or the spectrum distribution of the shutter/mirror noise. For a "noise" such as a camera shutter which is not even supposed to be heard (under some condigtions) such a sound is very subjective.
The "S" position of the shutter delays the mirror return-obviously the same sound energy were it to be measured yet timing could be everything. I just shot a live show with the MKIII set to 10Fps and exposed images in 2./3 shot bursts to capture motion. It was my impression that the annoyance factor wasn't much (any) more noticable than a single click.
dcmiller wrote:
I thought we had a simpler test, like fill the buffer and see how long before it empties.
Well thats the tests I was running. At first I just ran the camera at 5fps and 10fps at ISO 100 and ISO 1600 until the camera stopped, at Manual mode 1/500 sec. I recorded RAW only. I got 60 sec for an ordinarily formatted SDHC card and 32 sec for CF card. That time is from the last shot until light went out. Both cards were Sandisk Extreme III versions recently bought, both 4GB. Those times are for ISO 1600 10fps.
Later I standardised on racking the frames out +2 additional shots, lens cap on. And I used a stopwatch instead of my watch. Everything else the same. A Ridata 2GB SD 150X card with ordinary formatting came in at 26 sec. I did not test it with low level format option, but 26 vs 32 sec is about the speed diff quoted by Rob G. I did perform the "low-level formatted" test on the Sandisk SDHC 4GB with racking + 2 frames, and the speed increased to 45 sec from the less accurately measured 60 sec ordinary formatted.
Leehman wrote:
I know this is off topic, but I would like to purchase a spare battery for my 1 D Mark 111. Has anyone been able to find one?
Thanks,
Leehman
Received mine yesterday ground shipped from Calumet. Of course it's been on backorder since Feb 26th.
dcmiller wrote:
On the Transcend 150x SD (not SDHC), low level format, I get 40 seconds to clear the buffer.
You can find the test procedure on about page 16
Odd, thats about what I get with SDHC 4GB.
I just reran my test with Ridata 150X SD 2GB. Last time with regular formatting I got 26 sec. With low level formatting I get the same...26 sec. Ran test twice. The ratio jives with 32 sec for CF ver of card I ran earlier according to Rob G's 14 mb/sec vs 11 mb/sec.
With the Extreme III 4GB SDHC regular formatting came in at 60 sec approx, low level formatting came in at 45 sec.
Leehman wrote:
I know this is off topic, but I would like to purchase a spare battery for my 1 D Mark 111. Has anyone been able to find one?
Thanks,
Leehman
I ordered my spare battery from Adorama i think it was129.00
SoundHound wrote:
You can do a test with a Class 1 sound level meter (I have one) and get an "official" hard number but that will not really measure the peak impulsive sound pressure or the spectrum distribution of the shutter/mirror noise. For a "noise" such as a camera shutter which is not even supposed to be heard (under some condigtions) such a sound is very subjective.
The "S" position of the shutter delays the mirror return-obviously the same sound energy were it to be measured yet timing could be everything. I just shot a live show with the MKIII set to 10Fps and exposed images in 2./3 shot bursts to capture motion. It was my impression that the annoyance factor wasn't much (any) more noticable than a single click. ...Show more →
Holy cow.. measuring the sound.. its a camera.. click click.
Based on what I saw in testing the 5D and 1D, I definitely think the same is true of the 1D mark iii. The same exposure settings worked to achieve the same exposure at ISO 3200. And halving the exposure time while doubling the ISO to 6400 still achieved equivalent exposure. So yes, I believe the 1D mk iii has the same ISO ratings as the 5D.
Now whether that is 1/3 stop faster than Nikon, I have no clue.
-Verxion
Thanks Verxion.. that's nice to hear ..
Regarding the 1/3 stop faster ISO issue, this is mentioned by Phil of dpreview http://www.dpreview.com/reviews/canoneos30d/page20.asp so ISO 6400 on a Canon dslr is about ISO 8000 on several other competing brands .. cool
that is not unique to the mk 3 i believe. My 20d will meter for ambient light in TV or A, rather than assuming the flash is the main source of light. Its just the way canon's flash system is designed.
mark wickens wrote:
that is not unique to the mk 3 i believe. My 20d will meter for ambient light in TV or A, rather than assuming the flash is the main source of light
Yeah but if you're shooting in Tv it should just adjust the aperture, not the shutterspeed, that's the whole meaning of shutter priority, otherwise you might as well put it on Av..
I guess I am having a tough time getting past the "warning!!!" in this title. Makes is seem like the camera is defective or something along those lines.
Unless I don't understand the issue here, it seems to be much more related to user error than a defect in the camera.
