M lens functionality on *ist DS: How much?
Posted 06/08/2005 - 11:20
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Yes, you can do what you describe, Arthur, but the lens operates at full aperture regardless of what is set. You seem to have assumed that the lens will stop down when you release the shutter, but it doesn't unless you use a different procedure that has been fairly extensively covered in these forums.
Have you tried setting the system to Av, keeping the camera with the same field of view and varying the aperture ring to see what happens then?
Yes, I see your point. I have done so. See the post in the Digital forumYes, you can do what you describe, Arthur, but the lens operates at full aperture regardless of what is set. You seem to have assumed that the lens will stop down when you release the shutter, but it doesn't unless you use a different procedure that has been fairly extensively covered in these forums.
Have you tried setting the system to Av, keeping the camera with the same field of view and varying the aperture ring to see what happens then?
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Or, take some pictures and check the depth of field of your image. To make it obvious, I'd suggest using say f8 or f11 and then repeating your test and take the pictures. Then see the DOF and you will see that there is hardly any because the aperture will be f1.4 in all cases.
Oops, no it isn't. The DOF changes. Sorry about that!Or, take some pictures and check the depth of field of your image. To make it obvious, I'd suggest using say f8 or f11 and then repeating your test and take the pictures. Then see the DOF and you will see that there is hardly any because the aperture will be f1.4 in all cases.
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You're right to run tests like this, there's no substitute for finding out things first hand. One of the ADAPS members showed me a an extensive set of slides he'd taken to demonstrate the effect of aperture on DOF and very impressive it was too. After that, he had a very clear idea of what it was all about!
What firmware was in the tet camera? I only found this with version 1.12You're right to run tests like this, there's no substitute for finding out things first hand. One of the ADAPS members showed me a an extensive set of slides he'd taken to demonstrate the effect of aperture on DOF and very impressive it was too. After that, he had a very clear idea of what it was all about!
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Posted 06/08/2005 - 12:16
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Arthur, please stick to one forum. And the person you are quoting is John Riley, not me. You clearly are getting a little over-excited. Calm down, your agitation is clouding your judgement.
G
G
Posted 13/08/2005 - 13:29
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You clearly are getting a little over-excited. Calm down, your agitation is clouding your judgement.
G
Wouldn't be the first time! You clearly are getting a little over-excited. Calm down, your agitation is clouding your judgement.
G
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24416 posts
24 years
Tyldesley,
Manchester
Have you tried setting the system to Av, keeping the camera with the same field of view and varying the aperture ring to see what happens then?
Or, take some pictures and check the depth of field of your image. To make it obvious, I'd suggest using say f8 or f11 and then repeating your test and take the pictures. Then see the DOF and you will see that there is hardly any because the aperture will be f1.4 in all cases.
You're right to run tests like this, there's no substitute for finding out things first hand. One of the ADAPS members showed me a an extensive set of slides he'd taken to demonstrate the effect of aperture on DOF and very impressive it was too. After that, he had a very clear idea of what it was all about!