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Old Feb 16, 2011, 2:04 PM   #1
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Default New k-5

I am planning on buying a K-5 and a prime lens within the next few days. However, I am not sure which prime lens to buy. I am not set on a particular focal length but would like the lens to be at least as good as the Canon lenses that I currently own(Which are listed below). If you were buying a new K-5 and had no lenses what 3 primes would you buy first? I have looked at several examples online of various Pentax lenses, but would like to know your thoughts.

My current Canon "L" lenses
1. 17-35mm /2.8
2. 85mm /1.2
3. 24-70mm /2.8
4. 70-200 IS /2.8
5. 50mm /1.4 (Non "L")
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Old Feb 16, 2011, 3:34 PM   #2
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if you have that much invested in Canon, and are happy with them and want something that is equivelent, then why buy the K-5.
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Old Feb 16, 2011, 3:35 PM   #3
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Oh, dear. Let's spend your money (I love to spend someone else's money).

You want primes, not zooms. No problem.

FA 31 Limited (this lens is highest on my want list at the moment). Legendary lens, one of the best ever.
FA 77 Limited - I have this lens. It's my favorite lens though I don't use it all that much. It's sharp, has beautiful bokeh and it's quality isn't matched by any zoom that Pentax makes. Another legendary lens, at f1.8 it's fast. There are those who argue that they would rather have the DA 70 Limited, but all I know is that I won't sell my FA.
DA*200 f2.8 - When I decided I wanted something around 200 mm, I thought about one of the 70-200 f2.8 zooms. What decided me on the DA*200 was that it was a bit lighter and it was weather sealed. I've been very happy with my decision, it's another that has very nice bokeh, and I don't worry about hiking with it.

If you are looking for Pentax lenses, any of the "Limited" or lenses with a "*" in the name (like the DA*200) will be top quality lenses.

You don't mention macro, but you might want to consider the DFA 100 Macro WR lens. There's two versions of the lens out there, the WR version is weather sealed and has rounded aperture blades for some very nice bokeh. If I didn't already own the very nice Vivitar Series One 105 Macro, this lens would be high on my list.

Another lens that's very useful (and that I have) is the DA 35 Macro Limited. It's nice to have the close focusing, but the bokeh isn't the best. Not surprising since its a macro lens, and why I still want the FA 31.

You don't mention a long lens, so I guess you aren't interested in a 300mm lens? Pentax has made nice 300 f4 lenses for a number of years, there's several different very good varieties.
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Old Feb 16, 2011, 3:56 PM   #4
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Quote:
Originally Posted by mfgriggs View Post
I am planning on buying a K-5 and a prime lens within the next few days. However, I am not sure which prime lens to buy. I am not set on a particular focal length but would like the lens to be at least as good as the Canon lenses that I currently own(Which are listed below). If you were buying a new K-5 and had no lenses what 3 primes would you buy first? I have looked at several examples online of various Pentax lenses, but would like to know your thoughts.

My current Canon "L" lenses
1. 17-35mm /2.8
2. 85mm /1.2
3. 24-70mm /2.8
4. 70-200 IS /2.8
5. 50mm /1.4 (Non "L")
As Hards80 asked, what is motivating you to get a K-5 and lenses?

Based on your stable of Canon lenses, I'd be surprised if you could top the Image Quality of the Canon L series lenses!
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Old Feb 16, 2011, 3:59 PM   #5
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Quote:
Originally Posted by mfgriggs View Post
I am planning on buying a K-5 and a prime lens within the next few days. However, I am not sure which prime lens to buy. I am not set on a particular focal length but would like the lens to be at least as good as the Canon lenses that I currently own(Which are listed below). If you were buying a new K-5 and had no lenses what 3 primes would you buy first? I have looked at several examples online of various Pentax lenses, but would like to know your thoughts.

My current Canon "L" lenses
1. 17-35mm /2.8
2. 85mm /1.2
3. 24-70mm /2.8
4. 70-200 IS /2.8
5. 50mm /1.4 (Non "L")
Me, here's what I would buy....

DA 35 f/2.8 Ltd Macro (alt: FA 35 f/2)

FA 50 f/1.4

And, my favorite

FA 77 f/1.8 Limited.
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Old Feb 16, 2011, 9:06 PM   #6
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You've received some excellent suggestions, and I cannot add anything to what has already been recommended. But I'm curious as to why you say you want prime lenses, especially when three of the five Canon lenses you own are zooms.

Oh, and welcome to this forum!
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Old Feb 16, 2011, 10:02 PM   #7
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You are not going to be able to match it up with pentax's offering. They are good lenses but now where near as good as the L glass you have.

And the 50 1.4 pentax has, is nice but will not focus as fast as the ef 50 1.4 USM.

You will take a down grade in Lens quality with the Pentax lenses for what you have now.
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Old Feb 17, 2011, 12:03 AM   #8
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Quote:
Originally Posted by shoturtle View Post
You are not going to be able to match it up with pentax's offering. They are good lenses but now where near as good as the L glass you have.

And the 50 1.4 pentax has, is nice but will not focus as fast as the ef 50 1.4 USM.

You will take a down grade in Lens quality with the Pentax lenses for what you have now.

Hmmm I really don't think those statements are true Sho.

This is from the link further below :

Popular Photography in its March 2002 issue called the Pentax SMC-FA 31mm Limited one of the greatest prime lenses it had ever tested (the other two were the Voigtländer Heliar 50mm f/3.5 and the Nikon Nikkor 45mm f/2.8P Tessar-type).

http://www.luminous-landscape.com/co...02-05-02.shtml

Three of the best 3 AF lenses ever made : 31, 43 & 77.

This is far from the only pro opinion on this.

For the OP. The 31 has the most useful overall FL though I have the 43 which is a superb, & my favourite, lense too.
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Nikon : D800, D600, Sigma 500/4.5, Sigma 120-300/2.8, Zeiss Distagon ZF2 - 21/2.8, Zeiss Distagon ZF2 - 35/2.0, Nikkor 85/1.8G, Sigma 50/1.4. Nikon x1.4 TC, Sigma x2.0 TC
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Old Feb 17, 2011, 12:12 AM   #9
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You realize the amount of light that the L lenses can resolve. The FF sensor are so much more demanding in that department. And that is what the L lenses are design for. The SMC might be as sharp, but will not resolve as much might as the L. FF sensors demand higher resolving lenses. DA* and DA limited lenses on a crop body are more forgiving.

Pentax still do not have a 70-200 2.8. And the ef 85 1.2L with a good copy without any focus shift is insanely good wide open at F1.2, do not think any of the pentax lenses can match a f1.2 with shallow dof that it can produce. f2.8 does not match f1.2 in shallow dof or low light ability.
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Old Feb 17, 2011, 12:12 AM   #10
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I am fortunate to have the lenses that I do and I don't plan on selling them anytime soon(unless I really really really like the K-5). The problems is that I can't be spontaneous with a big white 70-200 IS /2.8 lens mounted on a Canon 1D Mark II and a great big flash stacked atop it all. I am looking for a DSLR that is small, rugged, has video capabilities and good low light performance. I bought a Canon T2i which seemed to fit the bill pretty well but the autofocus stopped working after a few days so I returned it. The 7D and 60D just did not feel good in my hands, so I bought the Nikon D7000. I do like the D7000 but it came in a kit and the lens hood keeps falling off so I will be returning it as well. I began reading about the K-5 a few days ago and it seems to fit my needs/wants pretty well. It is small, rugged, has good ergonomics and the lenses are relatively cheap. Nostalgia may play a role in my choice for a K-5 as well because way back in the day my everyday camera was a K1000(They don't make them like that anymore). The reason I asked for input concerning only prime lenses is because I plan on buying a prime lens first. After I get used to the camera I will probably come back to the forum and ask for zoom recommendations.
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