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Old Nov 1, 2011, 6:15 PM   #1
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Default Canon SX40 HS Busy Screen


Just got the Canon SX40 HS.
A busy screen shows after shooting/taking a picture just before showing the shot. Is this normal?

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Old Nov 1, 2011, 6:57 PM   #2
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I don't own a SX40HS- however,is the "busy" there for some time...? Suggesting maybe a mischief with the SD card..? Try formatting the card,or trying another formatted SD card...
How long are we talking....?
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Old Nov 2, 2011, 11:01 AM   #3
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hmm.. it is about 1-2 seconds long. I tried formatting the SD card, still the same. Could it be that I had setup/configured the "shutter speed" long thus having the "busy" message?
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Old Nov 2, 2011, 1:34 PM   #4
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Default Delay

I just purchased my SX-40HS yesterday, and when I read your post I picked it up and tried it just now- and I don't see any kind of a delay like that... I see maybe 1/4 second busy- then the picture I just took/histogram/data. What class SDHC card are you using? I'm using a class 6...
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Old Nov 2, 2011, 4:04 PM   #5
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You may get a "busy" message if your taking an image of a fairly long exposure,or if you've rattled off a few shots in a burst mode...
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Old Nov 2, 2011, 6:12 PM   #6
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Thanks simon40 and Wes James!
I'll definitely try your suggestions.

great community by the way
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Old Nov 13, 2011, 8:16 PM   #7
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If the camera is a computer (it is..) then busy means it's busy because something
is waiting. duh.

but the waiting is the part you want fixed. I'd suggest that the memory card
speed could be part of the problem so I'll suggest you
time the speed it takes to get unbusy. then try another sd card.

however ..

the type of photo you shoot will affect the speed. e.g. an all white or all black photo
should process much faster than a detailed photo with lots of lines and colors.

So whatever you shoot , and time, be sure to time and shoot the identical scene for
the other timings.

Also I'm under the impression that speed '6' is the fastest SD speed and that speed 10
is not 'real' . I don't know the details of that yet.

It came about during a discussion where a user, who seemed knowledgeable said
that he'd gotten faster results using a '6' SanDisk card versus a '10' card from another
reputable brand .. I don't remember the other reputable brand.

then he went on to refer to how 10's can't exist due to .. and that's where I got
a bit bored.

I do believe him that a certain card of a given 'speed' , 6 for example, could be faster
than a 'faster' card but there's more to it than just the

a. sppeed
b. mfg specs

you'll want to look into the architecture of what makes an SD card . what the limits of
SD cards are and why those are the limits.. and then you'll get a handle on whether you
can see speed differences among certain cards.

by the way .. if you do speed tests on cards I, personally, would do them using a
'special' external to the camera reader and not using USB 2.0

What to use? I dunno. Because again we get into whether chipsets cause timing
problems and speed problems. But there are, probably, areticles about how to properly
measure speeds.

One interesting way that I'd like to try is to use an SD to CF adapter and then
use an IDE to CF adapter.

There might also be some SD to SATA adapters out there. I say this because the
closer one gets, in my opinion, to the read circuits that your CPU is reading from.. such
as the ATA / IDE (old style) disk chips.. I only know about them and not so much about
SATA and their interface to the CPU

I have more confidence that the readings , for speed, that I get are real.

Adding USB 2.0 , or even USB 3.0 just adds, IMHO, more things to check out
to verify that they're working properly, before you believe the speed specs.

Back to the 'busy'..

I have an SX40 and will try to do some tests.

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Old Nov 18, 2011, 3:33 AM   #8
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The busy occurs on some photo composition and not on others. This is as I suspected
would happen.

I do have 2, 8gb, 10 and 6 Transcend cards to try and the results from using them
showed me that they respond nearly identically to the variety of shots I tried.

If I were to guess I would expect that only cards slower than 6 or perhaps 4 will show
busy for a longer length, of time, as the fastest cards. Another way to say this:
The vast number of reasons we see 'busy' is due to the scene and not the card except
under certain exceptional circumstances. I don't know what those would be , at the moment, because I'm tired of thinking about it. : )

I shot 3 types of scenes.

1. A white 'image' on my monitor. With these shots there was no 'busy' using AUTO
mode. The shutter speeds, ISO and so on were not recorded. I tried both cards
with the same result.

2. A closeup image, with very low light, of a printed page. The 'busy' lasted about
1.5 seconds and the slower, of the 2 cards, appeared to last longer.. but by a small
amount. If I were guessing here are the 2, card's, 'busy' times.

10x - 1.5 seconds
6x 1.6 seconds

The difference was barely noticeable however I did notice it and did guess correctly which card was faster.

Last shot was an illuminated closeup of the same page. There was no 'busy'

With hundreds of settings you're going to place various pressures on operation of the
CPU and chipset in the camera. I'm guessing that 'busy' goes away when the chipset
can allow another photo to be taken.

If you learn about which scenes cause greater computing pressures you'll learn how to
minimize the busy time by manually selecting settings so the camera's cpu doesn't
have to 'think about it'. .. That may be one guess at how to minimize 'busy'.

Think of all of the ways to reduce the camera's use of its 'features'.

As with its ability of accommodating low light levels you can reduce the busy time by illuminating the scene.

It's that simple, but it's a complex task, with so many choices of how to help the camera to do its job.

Last edited by AndreLikesPhotos; Nov 18, 2011 at 3:36 AM. Reason: correction
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