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06-03-2010, 05:43 PM   #16
Ira
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QuoteOriginally posted by Arpe Quote
Always use it. If I want to adjust exposure I use +/- EV. Never had a problem with it on my K20D or K-7.
Explain:

If the camera chooses 800 in daylight, how does the EV button change that fact?

Here's an example:

I'm a hack, but I get lucky at times, and but again, I still love doing it.

I was having a beer in a bar near the mall waiting for my wife to LEAVE the mall so I could get back home and to this website. It was about 3PM on a sunny Florida day, and I walked past the vehicle below after I got the call to pick her up. A sad excuse for a car show outside of the Tijuana Taxi Company Mexican bar and "grill." (What's a grill anyway?)

Old manual m42 Super-Tak, took 5 shots of this vehicle at 100, but there is no way that this would have looked like this at 200 or 400:



Like I said, I'm a hack, but having this at 100 made all the difference in the world for this shot, and still plenty of depth of field, especially when you consider the perspective I was shooting from.


Last edited by Ira; 06-03-2010 at 05:57 PM.
06-03-2010, 05:57 PM   #17
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I guess I'm either misinformed or a lunatic. I use Auto ISO most of the time, selecting between 100 and 640 on my K10D. I will step it into Manual ISO if I know I have the light for it, or if I have low light but NEED high shutter speeds, I'll force it into a higher ISO.
06-03-2010, 06:08 PM   #18
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Another minority vote:

I use it all the time. For low-noise color, such as for publication, I shoot in P mode with the ISO set to 100-800. I sometimes raise the limit for vacation shots.

And for BW fine art shots, I swing the dial over to USER, where it resets ISO to 100-3200 and changes the display to BW.

Great feature.

PS: I don't feel I am sacrificing any "control" here. I am perfectly capable of disagreeing with the camera settings, and often do. But I like to be able to shoot fast.

PPS: I love Ira's "Trashographer" designation!
06-03-2010, 06:12 PM   #19
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QuoteOriginally posted by bkpix Quote
Another minority vote:

I use it all the time. For low-noise color, such as for publication, I shoot in P mode with the ISO set to 100-800.
But how can you say that 800 is low noise compared to 100?

06-03-2010, 06:17 PM   #20
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Ira: It's not, of course. But the range of 100-800 is low enough for many publications. If I need to be fussier I set it to 100-400. And on the rare occasion where I might be shooting for a huge enlargement that needs to be clean, I'll set it to 100.

BK
06-03-2010, 09:01 PM   #21
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i use it with av mode, 200-6400 on the Kx... works a treat.
06-03-2010, 09:11 PM   #22
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QuoteOriginally posted by Marc Sabatella Quote
I don't let the camera choose my exposure in any way whatsoever. M mode, manual ISO. I'll use the green button to let the camera "suggest" a shutter speed, but that's it.
I totally agree, but for people starting out, they are trying to figure out composition, rule of third, planes etc.
06-03-2010, 09:29 PM   #23
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QuoteOriginally posted by Reportage Quote
i find that its a tad erratic even in the best of times for my k20d. Can have extreme differences in iso for repeated shots of the same subject.
I use it all the time. Auto ISO is totally predictive and not erratic at all.

QuoteOriginally posted by Ira Quote
Explain:
If the camera chooses 800 in daylight, how does the EV button change that fact?
Camera won't choose ISO800 in daylight. Period.

Auto ISO rules always have low ISO as a highest priority. ISO us upped only when it is not possible to open up aperture or make exposure longer.

06-03-2010, 10:11 PM   #24
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I usually have 100-800 (using in A mode), or 200-800 with the extra dynamic range function on. The K200D does a good job of only upping the ISO if needed to avoid slow shutter speeds & I find it works great. In M mode with a manual lens I usually set it on base ISO though (or higher if low light). And If I need a high shutter speed I might force the ISO high, 800 or so, to make sure I get the results.
06-03-2010, 10:21 PM   #25
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I use Auto ISO for periodically shooting live theatre productions (amateur plays) for promo shots. Stage lighting is periodically changed electronically during the show and during a specific scene. I use auto 100 to 3200 in the TAV mode where i can set T to capture human movement and Aperture to 3.5 or higher for DOF. Works great. I get quite acceptable prints at 3200 iso using LR's 3 Beta2 software and GordonBeeGood's magenta remover on my K20.

For night exposure's, i use Manual controls and manual iso.
06-03-2010, 10:48 PM   #26
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My ISO is always set to 100, and only I only turn it up if i start running into trouble.
06-03-2010, 11:32 PM   #27
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Typically mine is always on. I keep it at 100-1600 and set to "slow" so that it will only step up the next stop of ISO if it has to, to maintain 1/60th or faster.

(I think thats how its supposed to work.... but hell)
06-04-2010, 03:40 AM   #28
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How do you set the auto ISO to "slow"?

I use auto ISO myself, in situations where getting the shot is most important.

I'll have to say it does not work well with my 10-20, as the camera picks shutter speeds as low as 1/15th sec. Longer lenses are usually fine, though.
06-04-2010, 03:57 AM   #29
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I use it a lot. usually with a upper limit = 640 but sometimes it's, like, "whatever." I'd say I set a specific ISO about 1/3 of the time.
06-04-2010, 03:58 AM   #30
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QuoteOriginally posted by KjetilH Quote
How do you set the auto ISO to "slow"?
It's new feature of K-7. You can set Auto ISO to Slow, Normal and Fast.
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