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Posts for: Blaster34
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Apr 12, 2024 11:39:56   #
burkphoto wrote:
Only 384 pages? Many of them are now over 1100. The Canon dSLRs we used where I worked in 2010 had 500+ page manuals.


Cheers!
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Apr 12, 2024 11:11:12   #
pecohen wrote:
I think it would help if camera and lens manufacturers would provide more detailed recommendations. They generally do seem to recommend turning off stabilization when using a tripod, but they don't bother to say why. So the photographer is left wondering things such as:

1. What if I use a tripod but it is a particularly windy day?
2. What about when using a monopod or other support such as a tree or perhaps a car door while the engine is running?

Generally, it would be helpful in general to have some answers to the "why" question.
I think it would help if camera and lens manufactu... (show quote)


As someone posted previously...it was posted in the previous manual and probably never rewritten. My current e-manual is 348 pages....that's longer than the operations manual for many of the Navy Aircraft I was associated... with....
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Apr 12, 2024 10:44:29   #
goldstar46 wrote:
=====================================================

Dear Burk Photo...

In your post, you stated: "Some cameras automatically turn on stabilization when there is camera "

As a 'long-time' gaffer of 55+ years, I have never seen this in print or any official documents.

I have seen this 'opined' on many occasions, and in all of my research, I have not been able to find this for my cameras, the Canon brand, or many others that I have researched in the past...

As an avid photographer, and someone who likes to be very informed because of the rapid changes in our craft, I do like to stay 'up to speed' for the elements of our profession and I am wondering if you could provide me with a 'specific brand' and/or a link to some official documentation which indicates this..??

I truly say this with all seriousness, because I do have a true desire to know correct knowledge...

If you could help me with that, it would be greatly appreciated.

Warm regards

Goldstar46
George Veazey
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George, I found this quote online for a Canon, not sure which model though...

“The IS mechanism operates by correcting shake. When there is no shake, or when the level of shake is below the threshold of the system’s detection capability, use of the IS feature may actually *add* unwanted blur to the photograph, therefore you should shut it off in this situation. Remember that the IS lens group is normally locked into place. When the IS function is active, the IS lens group is unlocked so it can be moved by the electromagnetic coil surrounding the elements. When there’s not enough motion for the IS system to detect, the result can sometimes be a sort of electronic ‘feedback loop,’ somewhat analogous to the ringing noise of an audio feedback loop we’re all familiar with. As a result, the IS lens group might move while the lens is on a tripod, unless the IS function is switched off and the IS lens group is locked into place.”

Cheers...
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Apr 12, 2024 10:08:47   #
jackpi wrote:
It depends on the camera. When in doubt, check the camera manual.


So, in the end, I should always turn it off (as per my manual), AND also the lens IS to off to reduce any chance of lens created blur? I'm wondering if my uncalibrated eyeballs can detect any major differences in sharpness, guess I'll have to do some experimenting to see if I can detect the difference. Thanks Jack.
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Apr 12, 2024 07:27:02   #
Tomfl101 wrote:
I’ve never turned IS off and have never noticed any ill effects. Run a few tests at various shutter speeds and determine for yourself.


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Apr 11, 2024 21:25:09   #
goldstar46 wrote:
=======================================================
Dear Blaster-34 ...

I am a Canon user and currently own the EOS R5... I too, have continued to struggle with the same question

Being the 'Geek' that I am, I decided to perform my own 'ad-hoc' test by doing the following...

1- Set my camera w/ my RF 100-500mm @ 500. setup in my residence office, point across the street
2- Tripod was a Mammer-Jammer $ 1,200/ Gitzo, carbon fiber, w/ a $ 350 Gembal head..
3- Set my shutter speed to 1/10 second, and using the display monitor on the back of the camera
4- I then 'focused' on an 'element' across the street @ 500mm and set AutoFocus 'Off'
5- At this point, I used the 'zoom' function of the camera to 'zoom' in 16x, to test this at extremes.

..... Yes, the above is effectively 8,000mm (500x16) but, after all, you want to see the results

With the above, after taking all 'hands-off' the equipment... one can see "NO movement" of the image.
..BUT, if you 'switch' "IS" on, and take 'hands-off' ... you will see distinct 'Image Drift' in the camera display

. Just saying... and that is only "MY TEST" for my purpose and consideration...
..The above are 'real life facts' and not just some 'theory' or 'guess' or unverified 3rd party information ???
...I do most of my work in landscapes... and after all, what can it hurt to turn off 'IS" if you are on a tripod??

As a result of the above, I have made the personal decision that when I use a tripod, me personally, I will turn off the "IS" as a matter of personal choice, and a 'extra measure' to guard against 'sensor drift'

I offer the above only as info... and to each his own...
...... I am not professing that is this the right way to do things or not the right way

Just information for consideration


Cheers
Goldstar46
George Veazey
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==================================================... (show quote)



Thanks George, I do the same thing and turn off when on a tripod even though there is 5-Axis IBIS, maybe I should probably try an informal test and try and see for myself....Cheers
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Apr 11, 2024 21:17:40   #
bhapke wrote:
I have one camera that produces noticeably worse results on a tripod when IS is on. It tries to stabilize the image even though there is no motion and causes blur. The other two cameras I own sense when on a tripod and don't have the same problem. In other words, it depends, but turning it off can't hurt unless you forget to turn it back on when you remove the camera from the tripod.


Thank you...
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Apr 11, 2024 12:13:44   #
burkphoto wrote:
This topic comes up a lot. The CORRECT answer varies by camera brand and model! Stabilization systems are NOT standard. Is yours in the lens? In the body? In both? How many axes of movement are involved? Three? Five?

Some cameras automatically turn on stabilization when there is camera movement and turn it off when there is none. Others can't discern that, so they require the user to turn it off when the camera is on a tripod. Consult your full operations manual for the details. Older cameras are more likely to require your intervention to avoid movement CAUSED by the stabilizer(s).
This topic comes up a lot. The CORRECT answer vari... (show quote)



Concise and crystal clear, thanks Burk...
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Apr 11, 2024 11:00:32   #
ricardo00 wrote:
There are many potential causes of vibration even when using a tripod which could benefit from the image stabilization of a lens and camera being on, including the movements of the shutter, wind moving the lens, your pressing the shutter button, etc However in the "early days" of image stabilization one could see that turning off this system would result in a sharper photo (I actually did some tests a number of years ago and saw this) when the unit was on a tripod. However with the newer image stabilization systems this is not very common.
There are many potential causes of vibration even ... (show quote)


Thanks Ricado, especially with technology improving at warp speed I can see it may/may not make a difference with these new mirrorless cameras.
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Apr 11, 2024 10:42:59   #
BebuLamar wrote:
I said it might but in my opinion a good stabilization system shouldn't do anything if there is no vibration and thus you never need to turn it off. But I think those say you should turn it off when used on tripod are afraid that it may works and cause vibration when there is no vibration not because they think of the little vibration from the shutter.


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Apr 11, 2024 10:42:30   #
CHG_CANON wrote:
You couldn't possibly have read 'everything' as all modern technology can / will sense a tripod and not cause a problem. If your conclusion is opposite, 'everything' you're read is wrong.


I believe I said everything "I" read, not that I read "everything" possible on all modern technology AND..... I also believe I never concluded "anything."....just asking a question on the technology and the reasons why.
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Apr 11, 2024 10:38:23   #
BebuLamar wrote:
If the mechanical shutter caused vibration then it stabilization should be used even on tripod. The idea of turning off stabilization is that it may work even though there is no vibration and actually causes the image to be less sharp. So if you turn off stabilization when using tripod then do it with electronic shutter too.


So, you say its the actual stabilization system that may cause vibrations? But if there is no movement (ie tripod) sensed, should stabilization even be actuated? So, while on a tripod, the idea is to prevent any possible stabilization input, it should be turned off?
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Apr 11, 2024 10:26:50   #
Everything I read points to turning off stabilization (OS) when using a tripod. However, presuming the electronic shutter works by turning the sensor on and off again and is supposedly silent, ie, without the moving parts of a mechanical shutter, then should it really matter if the camera's OS is turned off or not while on a tripod? Does that technique also apply to lenses with built-in stabilization? Cheers!
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Apr 8, 2024 12:33:49   #
Moondoggie wrote:
Nice images!


Thank you kindly M-D
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Apr 7, 2024 13:58:20   #
scallihan wrote:
Great images. That last one appears to be actively building his web.


Thank you Susan and maybe but he's munching on what's left of a dragonfly...
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