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03-07-2014, 08:48 PM   #16
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There's a lot of talk about stitching on this thread...but I wouldn't use a wide angle for the sole purpose of a wide field of view. I think ultrawides, like 8-12mm are best used for exaggerating perspective. Like really getting into the viewers face (think Dirty Harry's 44magnum pointed at you). You cant simulate that by stitching.

03-07-2014, 08:58 PM   #17
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Well after reading this: Sigma 10-20mm F3.5 vs F4.0-5.6 - The Bottom Line - PentaxForums.com i would go for the sigma. There is only 50$ more than the Tamron lens. Now to find a used one...
03-07-2014, 11:19 PM   #18
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If you're not too particular about IQ, then you have many options. If you are, then you basically have:

DA15

Sigma 8-16

Maybe Samyang (Rokinon) 16/2, 14/2.8, or (upcoming) 10/2.8.
03-08-2014, 07:06 AM   #19
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Well as for IQ goes, i am shooting with the less expensive lens in the lineup (18-55mm, 50-200mm and 50mm f1.8). When i will stop blaming my errors and seeing the limitations of those lens i will look more for high quality lens. Right now i cannot shoot at these focal length, that is why the 10-20 zoom is interesting. Exploring what i can do and than switching to a better prime lens.

As for your options DSims, the 2 first options are around 700-800$, a bit too pricey for me (for now) and the Rokinon/... are around 400-500$. But for around the same price i can get the Sigma 10-20mm.

03-08-2014, 07:10 AM   #20
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I think you will be happy with the Sigma...
However, how are you with post processing? These ultrawides really benefit from good lens correction such as DxO or PTLens.
03-08-2014, 07:21 AM   #21
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I am using Lightroom 5 at the moment. I am learning with YouTube so there are plenty options that i am notre aware. Do you think it is sufficient?
03-08-2014, 04:28 PM   #22
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QuoteOriginally posted by SuperSyx Quote
Right now i cannot shoot at these focal length, that is why the 10-20 zoom is interesting. Exploring what i can do and than switching to a better prime lens.

As for your options DSims, the 2 first options are around 700-800$, a bit too pricey for me (for now) and the Rokinon/... are around 400-500$. But for around the same price i can get the Sigma 10-20mm.
Then I think the Sigma 10-20 or a similar lens would be good. Buy a used one - don't spend to much on a lens which already costs too much for the IQ you get (IMO) - plus if you plan to upgrade later, you don't want to lose much in the buying and selling process.
03-10-2014, 10:10 AM   #23
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Wide fast lenses are the weak spot in the Pentax lineup for APS-C.

For some of what you are describing, I would go for a Sigma 24mm f/1.8 (should be wide enough for most interior shots), unless you wanted to spend considerably more money. Wide sky photography is not something I'm really familiar with, but it sounds like something you'd do with a tripod...

There's also the Samyang 16mm f/2 if you don't mind manual focus. I'd think it would be hard to manually focus a lens this wide while in a tight space in low light situations. But 16mm is probably wide enough for what you are describing, I think.

Personally, I think the first thing you need for your cabin pictures is an external flash...

03-10-2014, 12:22 PM   #24
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The OP mentions "wide sky". If that includes night shots, aka astrophotography, I recommend the Samyang/Rokinon/etc 14mm f2.8. It has very little coma distortion even when wide open. Many zooms and some primes have too much coma.
03-10-2014, 05:39 PM   #25
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Tried wide angle

Well this weekend I tried wide angle with the 18-55 and a Opteka 0.35 wide angle lens. You will get the images i am going for. The problem with this method is the major vignetting when at 18mm.

Now i am wondering, the zoom lens is around 430$ and the Bower 14mm f2.8 is 300$, will i regret paying more for the zoom or i could just remove chromatic aberrations in Lightroom and have a sharp picture also?

Oh and I did find about the Bilsi shipping from Adorama, really nice when you are ordering from Canada.
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03-13-2014, 10:55 PM   #26
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QuoteOriginally posted by SuperSyx Quote
Well this weekend I tried wide angle with the 18-55 and a Opteka 0.35 wide angle lens. You will get the images i am going for. The problem with this method is the major vignetting when at 18mm.

Now i am wondering, the zoom lens is around 430$ and the Bower 14mm f2.8 is 300$, will i regret paying more for the zoom or i could just remove chromatic aberrations in Lightroom and have a sharp picture also?
For shots like this I think you'll be better with one of the faster lenses, because they really gather the light better. So that means one of the Samyangs, or possibly the DA15. Last resort would be the Sigma 10-20 (f/3.5 version only), but I still don't think it would be that good. Just using a slower lens with a longer exposure isn't as good as a faster lens - you'll get nicer images with the faster one. If the Samyang 16/2 is wide enough I'd go for it.
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