ChrisA

Joined: 4th January 2007

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ChrisA
Faster AF than the K10D?

For weddings and portraits, who cares?

Comment by ChrisA posted on Curious Questions about the K20D at 05/02/2008 - 21:18

ChrisA
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(BTW, PRA seriously eats the K10D battery )
Is it definitely PRA, Matt?

I've noticed that if I leave mine connected via the USB port the battery runs down very quickly... regardless of whether I'm using PRA.

Comment by ChrisA posted on Instant view on laptop at 30/11/2007 - 15:53

ChrisA
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I was thinking that as well, Chris!
You and most of the others, John. I thought I'd get in first

Comment by ChrisA posted on Discussion: Weekly Competition 21 "Something on toast" at 26/11/2007 - 16:13

ChrisA
Well I certainly can't complain about the theme not being specific enough.

Comment by ChrisA posted on Discussion: Weekly Competition 21 "Something on toast" at 26/11/2007 - 16:10

ChrisA
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Hmmm, I've put 12,000 images through the K10D, maybe I'll wear it out before the K??D comes out?!
Funny you should say that. I had a change in mindset earlier this year when I went past about 5000 frames with the K10D (after about 6 months).

The context is my ME Super which I've had for about 20 years, and put about 10 rolls a year through, on average, maybe a bit more.

With the K10D, I found myself wondering if my far more profligate rate of button-clicking was likely to be a problem until I realised that even at 10,000 frames a year, it would still take me ten years to get through its nominal 100k shutter life. Of course, who knows if it'll break down electronically before then.

Ten years? I can't imagine not buying its successor, or maybe the one after that, within that time frame. I've had my PC about 4 years now, since I built it, and it feels very old and clunky...

Comment by ChrisA posted on K20D? at 28/11/2007 - 23:50

ChrisA
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14MP Pentax designed CMOS APS-H sensor
This would be worth having if it also came with significantly higher, low noise ISO settings.

Otherwise it's only a marginal increase - it would have to be nearly 17 MP for it to be the same proportion more than the K10D, than the K10D is more than the K100D.

It'll also be interesting to see if the image circle really is Ok with a 1.25 crop factor and the DA lenses. If it is, then lenses will all get a bit wider, which would be quite handy in a way, if I could get my head round remembering two crop factors.

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Faster autofocus
This would be worth having if it was also predictive and worked well.
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better antishake
This would have to be much better for it to be significant. The K10D SR is already pretty good.
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4 photos per second
3"screen
Live view.
Not a big deal, really.

Overall, it doesn't add up to something I'll be desperate for when it comes out. Even the 'worth havings' aren't worth having at any cost, so the price will be important.

Comment by ChrisA posted on K20D? at 26/11/2007 - 11:10

ChrisA
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APS-H was (on APS film cameras) approx 30mm x 16mm, so a bit more 'widescreen' than the current APS-C sized sensor in the current Pentax DSLRs (24 x 16).
You sure about this, Dan?

Wikipedia seems to think it's another 3:2 format - about a 1.25 factor compared with 35mm, rather than 1.5 for APS-C.

Comment by ChrisA posted on K20D? at 25/11/2007 - 23:35

ChrisA
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Bear in mind the camera is tilted upwards, which may make distortion more pronounced?
It won't make barrel distortion any more pronounced, will it?

I'm aware of the old converging verticals problem when you point the camera half way up the tall building, but this is a different issue, isn't it?

Comment by ChrisA posted on Trying out my new Sigma 10-20mm... at 02/12/2007 - 20:00

ChrisA
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ChrisA wrote:

It put me right off, but I'm wondering now if it's actually not bad compared with other wide lenses. I've noticed a bit of horizon curvature with the DA 18-55, for instance. So for something much wider, like 10-20, maybe I'm expecting way too much.
If you let the software correct it then it doesn't matter any more, and you can get on with taking pictures
Yes, I absolutely take this point. It's a mindset thing - I haven't quite got it yet

Comment by ChrisA posted on Trying out my new Sigma 10-20mm... at 02/12/2007 - 19:57

ChrisA
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Chris, I'm guessing you have the Tamron, have you actually tried a similar shot? Bear in mind the camera is tilted upwards, which may make distortion more pronounced?
I don't have it - I've only seen some of the review pics taken with it. The one I had in mind was the building at the top right of the table of examples at the bottom of the page here (beware - big file if you download the whole thing), with architectural lines very close to the edge of the frame.

It put me right off, but I'm wondering now if it's actually not bad compared with other wide lenses. I've noticed a bit of horizon curvature with the DA 18-55, for instance. So for something much wider, like 10-20, maybe I'm expecting way too much.

Comment by ChrisA posted on Trying out my new Sigma 10-20mm... at 02/12/2007 - 19:49

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