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Old Mar 31, 2005, 12:39 AM   #1
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For ease of use, I switched the *ist DS to Macro which has produced some pretty impressive shots;depth of field looked reasonable for the kit lens set to FL 55mm @ closest focus.

When shooting a selection of coins, I noticed that DOF was slightly restrictive but there appears to be no control over the shutter speed/aperture - is this correct as there's nothing in the manual to suggest otherwise - it's appears to default to F8.

Using one of the priority modes gets around the restriction but it would be a nice touch if the *ist DS could use the 'wheel' to vary the exposure setting to increase the DOF.

This also applies to other modes including 'P' - the *ist DS is the only camera that I've used that doesn't seem to allow any exposure change (other than +/- compensation).

How about a firmware update Pentax to improve the flexibility of the *ist DS.
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Old Mar 31, 2005, 12:54 AM   #2
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Well, there is always AV mode to play with - this is probably most used mode in mine anyway :-)
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Old Mar 31, 2005, 1:01 AM   #3
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Here's the shot of the coins that I mentioned using Shutter Prioriy.

Handheld, 1/125S, f19, Shutter Priority, closest focus, FL-55 focused in the center of the image.

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Old Mar 31, 2005, 10:51 AM   #4
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catbells,
check page 138 of the manual. i get this to work in M, AV, and TV modes. play around with it. thought i'd never find it in this POS manual.

you can set the aperture on the kit lens.
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Old Mar 31, 2005, 12:39 PM   #5
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Thanks robar

I know that the exposure can be adjusted in TV, Av, M & B.

I just thought it would be a nice touch tobe able toadjust the exposure by rotating the 'wheel' in the 'basic' modes or at least the 'P' mode.

Given that macro shots have limited DOF, it would have been useful when adequate light permitted, to have reduced the shutter speed to increase the aperture thus increasing DOF in the 'Macros' setting.

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Old Mar 31, 2005, 12:45 PM   #6
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i must be misunderstanding you.

in manual and AV you can do just that.
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Old Mar 31, 2005, 1:17 PM   #7
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Catbells wrote:
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Thanks robar

I just thought it would be a nice touch tobe able toadjust the exposure by rotating the 'wheel' in the 'basic' modes or at least the 'P' mode.

This is what Pentax calls HyperProgram. This is a feature on the *istD but not no the *istDs.
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Old Apr 1, 2005, 1:05 PM   #8
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Here's shot I took of some wood anemones that I took using Shutter Priority:

Tv: 1/125S
Av: f16
ISO: 200
FL: 82mm
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Old Apr 1, 2005, 1:32 PM   #9
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And this Dandelion:

TV: 1/125S
Av: f13
ISO: 200
FL: 82mm
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Old Apr 4, 2005, 2:01 PM   #10
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The images are great but I must agree with an earlier post, aperture priority is always preferred when depth of field is an issue, in shutter priority mode you must change the shutter speed to get the aperture you want but in aperture priority mode you set for DOF and let the shutter speed go where it may (tripod is a big plus here).

Ira
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