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01-22-2011, 04:59 PM   #1
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Nifty Fifty?

Is the SMC Pentax A 50mm f/2 considered a nifty fifty and would it be a good lens to add to my k100d? I already have the Tamron 70-300 mm f1.4-5.6 Tamron 28-80 mm 3.5-5.6 and Pentax 18-55 .

01-22-2011, 05:06 PM   #2
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Any fast 50mm lens is a nifty fifty.
01-22-2011, 05:08 PM   #3
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So that is considered fast?

Last edited by Leana; 01-22-2011 at 05:13 PM.
01-22-2011, 05:13 PM   #4
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It's only a stop slower than an f/1.4. That's still pretty fast.

01-22-2011, 05:15 PM   #5
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Ok thanks!! Which one is better for a rookie like me? that one or the Pentax M 50mm 1.4
01-22-2011, 05:30 PM   #6
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the 1.4 is better for anyone, not just for you

though you may benefit from the A contacts on the 2/50 you mentioned
01-22-2011, 05:38 PM   #7
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Here's my dilemma...SMC Pentax A 50 mm f/2 for $60 US or Pentax M 50mm 1.4 for $85 US. Both are used and in good condition. Which would you buy?
01-22-2011, 05:40 PM   #8
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QuoteOriginally posted by Leana Quote
Ok thanks!! Which one is better for a rookie like me? that one or the Pentax M 50mm 1.4
The 50/1.4 is pretty much universally regarded as a lens with a legendary reputation and it is widely loved and respected.

The 50/2, by comparison, is viewed like a red-headed stepchild. It is perfectly capable of good photos, though. It all depends on what you do with it.

The main difference you need to be aware of is that one is an "A" series lens and the other is a "M" series lens. The A series lenses are capable of automation when setting the aperture and for shooting with flash. The M series is not capable of any automation at all and you will have to remember to manually meter your light when shooting. There is a good sticky thread at the top of the Beginner's Corner which gives more information on using these lenses. You may wish to read through it before you make a decision.

01-22-2011, 05:44 PM   #9
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I've also had good luck with the M 50 1.7
01-22-2011, 05:51 PM   #10
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I don't think I would pay more than $35.00 for the A F2. You should be able to find a A 1.7 for $60.00 and the M 1.4 for $85.00 is fair price.
01-22-2011, 06:05 PM   #11
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You can generally find a 1.7 for about $40 on ebay, and it's a much better lens than the f2. I recommend searching for a 1.7, but manual focusing takes a lot of practice.
01-22-2011, 06:49 PM   #12
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If you had a firm budget of US$25, and you found an A50/2 for US$25, I'd say, go for it. If you budget is greater, don't. It's not a *bad* lens, it's just completely overshadowed by its f/1.7 and f/1.4 kin.
01-22-2011, 07:24 PM   #13
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How about M42 lenses?

I have the 50m, f/2 A lens. Its decent, and it does allow full aperture automation on my K10D. The only thing I have to do manually is focus.

I also have a 50mm, f/1.4 Super Takumar, from my Spotmatic. With an adapter, it works on my K10D very nicely. Frankly, I don't have any K or M lenses, just M42 and A lenses, so I can't speak from experience about the K or M lenses.

However, the M42 50mm works in Av mode on my K10D. Since I grew up on a Spotmatic, stop-down metering doesn't bother me in the least. Its second nature. I simply put the lens in Manual mode, which means the aperture stops down immediately, as I turn the ring. I focus, stop down to meter, recompose if necessary, and shoot.

I've read that Av mode doesn't work all that well with K or M lenses. You must shoot with the camera in M mode, use the Green button to stop down, and set the aperture and shutter speed manually, with the advice of the meter.

I find the flow with the M42 lens in Av mode to be very easy.

There are some amazingly good Super Takumar and SMC Takumar lenses out there at very affordable prices.
01-23-2011, 02:29 PM   #14
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If you don't mind changing the aperture manually then go for the m-1.7 which is found at reasonable prices...
Picked mine up with an ME-Super attached to it and it blows the A-f2 away!!
01-23-2011, 02:47 PM   #15
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QuoteOriginally posted by Leana Quote
OWhich one is better for a rookie like me? that one or the Pentax M 50mm 1.4
If I've read this right you are comparing a manual and an autofocus lens.

It doesn't matter how good the lens is if the shot is out of focus. Personally I found using MF lenses on my K7 a trial, yet I never had any problems with them on my ME Super. However it has a huge, almost blindingly bright viewfinder, and a split-image focusing screen.
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