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09-26-2012, 02:57 PM   #1
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Wide Angle for shooting indoors

Hello
Greetings to all.
Often in my work I am asked to make good photographs of the interiors of buildings such as hotel rooms.
I have a Pentax kr-and would like to get some help choosing a wide angle lens reasonable to perform this work.
Can be Pentax and other manufacturers as well.

Regards.

09-26-2012, 03:09 PM   #2
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We just had a discussion of this issue, try this thread:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/200234-lens-es...otography.html
09-26-2012, 03:12 PM   #3
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Maybe a Tokina 10-20mm?? It's probably does not offer the best quality but it certainly is inexpensive, and I think it has a pretty much silent autofocus motor.
09-26-2012, 04:55 PM   #4
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QuoteOriginally posted by iNicole Quote
Maybe a Tokina 10-20mm?? It's probably does not offer the best quality but it certainly is inexpensive, and I think it has a pretty much silent autofocus motor.
Are you meaning Tamron or Sigma? The Tokina isn't available in Pentax mount, AFAIK.

09-26-2012, 05:04 PM   #5
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QuoteOriginally posted by Ubuntu_user Quote
Are you meaning Tamron or Sigma? The Tokina isn't available in Pentax mount, AFAIK.
Haha, MY BAD! It's actually the Sigma 10-20 mm.... But you can always use adapters, I don't see what's wrong with them!
09-26-2012, 05:45 PM   #6
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QuoteOriginally posted by iNicole Quote
But you can always use adapters, I don't see what's wrong with them!
There are no good adapters to go from Canon, Nikon or Sony to Pentax. They all require optical correction to achieve infinity, which is very useful on a super wide angle lens. This optical correction puts a cheap piece of glass between your expensive lens and your sensor, degrading the quality. It also acts as a teleconverter, making the lens longer, so it isn't as wide anymore.
09-26-2012, 06:00 PM   #7
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Sigma 10-20 3.5 HSM.
09-26-2012, 06:13 PM   #8
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Just to note that some of my clients hate the distortion caused by lenses towards the 10mm end of wide angle lenses. The corners are stretched to keep the lines parallel., It takes a bit of planning the photo so the interiors don't appear distorted. My sigma 10-20 does a great job. (I find if the focus is on many people in a confined space my 10mm fisheye produces a more pleasing photo as sometimes bending lines is better than stretched corners.)

My 10-20mm sigma is my most dangerous lens and is responsible for my biggest stuff ups due to distortion. Use it with great care.

09-26-2012, 08:13 PM   #9
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Sigma 10 - 20 or DA15

Sigma 10 - 20 is a very good lens, I owned one a while back and is a very fun lens to use. I would be careful though because it distorts a hell lot at <15 mm (Not really fish eye distortion but you'll know what I'm talking about when you use one) else the distortion is very minimal.

I've never owned a DA 15. But as far as I know the DA15 doesn't distort pictures if it does then it's going to be minimal or not at all. + the one thing I like about the 15 is the filter thread, if you're going to use any kind of filter I would go with the DA15, because for some reason the sigma 10 - 20 doesn't work well with filters that much.(Maybe because of how it's built)
09-27-2012, 07:57 AM   #10
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The DA 15 is great, but is not wide enough for some shots.
09-27-2012, 10:40 AM   #11
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QuoteOriginally posted by Ubuntu_user Quote
The DA 15 is great, but is not wide enough for some shots.

Do you think the DA15 would suffice if the user used some kind of panoramic technique? also would doing a pano shot mess or distort the picture?
09-27-2012, 10:51 AM   #12
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The lens in this focal length range with the least distortion is the Sigma 12-24. It's also the most expensive.

You can also look into which lenses have profiles in Photoshop or DxO in order to correct the distortion.

Here's the Adobe lens profile section: Lens profile support | Lightroom 4, 3 | Photoshop CS6, CS5 | Camera Raw 7, 6

And DxO: Supported equipment (click on "Supported and planned combinations")
09-27-2012, 06:00 PM   #13
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QuoteOriginally posted by kaiserz Quote
Do you think the DA15 would suffice if the user used some kind of panoramic technique? also would doing a pano shot mess or distort the picture?
There definitely would be some distortion. And a panoramic *might* work, but generally with small hotel rooms you'd need something a little wider than 15mm and a zoom lens is nice for that.
09-27-2012, 06:30 PM   #14
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Pentax DA 12-24mm is excellent for indoor shooting of interiors.
09-27-2012, 06:39 PM   #15
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QuoteOriginally posted by elliott Quote
There are no good adapters to go from Canon, Nikon or Sony to Pentax. They all require optical correction to achieve infinity, which is very useful on a super wide angle lens. This optical correction puts a cheap piece of glass between your expensive lens and your sensor, degrading the quality. It also acts as a teleconverter, making the lens longer, so it isn't as wide anymore.
It's physically possible to mount Nikon lenses on Pentax (or so I hear, at least for some lenses). And Nikon lenses have a longer flange focal distance, which means they should also focus to (past) infinity, as I understand it.
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