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11-14-2011, 02:46 AM   #1
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50mm lens for K200D advice please

Hi - I am a total beginner and would really appreciate some advice please.

I have had trouble shooting in low light with the 18-55 kit lens and have been advised to buy a 50mm fixed lens. I have looked at F1.4 lenses - but there is a big difference in cost ....is a lens with SMC suitable for my camera/what does it mean?

What does FA mean ? ...they seem to be more expensive than lens that just say A or M (which I assume means Auto or Manual focus?)

I was looking at buying a 50mmm F1.4 FA with a PK fitting? is this suitable for a K200d...any thoughts or comments on performance?

As you can tell I am very confused and would really appreciate any help. Thank you

11-14-2011, 03:07 AM   #2
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FA = auto focus, auto aperture
A = auto aperture, manual focus
M = manual both
11-14-2011, 03:30 AM   #3
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Hi freshshoots!

If you want to learn photography, the M50 f:1.7 is a great alternative. It was my first buy after the kit. It is manual focus only.

If you want to take pics of your dog or moving baby then AF is to be considered. Fa50 1.4 is a good buy. Or the Sigma 50 EX 1.4.

And if the low light is in a small space like an apartment then the 50 might not be wide enough. Then the alternative is a 30mm or 35 mm lens. Sigma 30 EX 1.4 for instance.

Seb.
11-14-2011, 03:37 AM   #4
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You will probably find the 50mm a little narrow. Sigma 30/1.4 is a good lens for it's price, but even DA35/2.4 would help you a lot IMO. And how about buying and external flash?

11-14-2011, 03:39 AM   #5
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The sigma 30 is a bargain for what it does
11-14-2011, 05:46 AM   #6
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As indicated by others, 50mm might not be the right focal length. You can easily check it yourself using the kit lens. Put your kit lens on 50mm or 55mm and check if you can frame the shots in the intended environment (e.g. lounge, kitchen, outdoors in the garden, ...)? If so, a fast fifty is OK. If not, you need wider.
11-14-2011, 06:21 AM   #7
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QuoteOriginally posted by freshshoots Quote
H
I have had trouble shooting in low light with the 18-55 kit lens and have been advised to buy a 50mm fixed lens. I have looked at F1.4 lenses - but there is a big difference in cost ....is a lens with SMC suitable for my camera/what does it mean?
All of the above replies are pretty much on-target. One last simple reference list for you:

PK: Old K-Mount manual lenses of other manufacturers beside Pentax (Ricoh, Tokina, Cosina etc.). No exposure programs, no autofocus
SMC: First-generation Multicoated high-quality Pentax manual lenses. No exposure programs, no autofocus
M: Multicoated high-quality Pentax manual lenses. No exposure programs, no autofocus
PK-A: Old K-Mount manual-focus lenses of other manufacturers beside Pentax (Ricoh, Tokina, Cosina etc.) with aperture linkage. Exposure programs usable, no autofocus
SMC-A: Multicoated high-quality Pentax manual lenses with exposure linkage. Exposure programs usable, no autofocus
FA (Including DFA, FAJ, F): Multicoated high-quality Pentax autofocus lenses with full exposure linkage. All exposure programs usable, full screw-driven autofocus
DA (Including DAL, DA*, DA Ltd.): Multicoated high-quality Pentax autofocus lenses with full exposure linkage. All exposure programs usable, full screw-driven autofocus
SDM: Silent Drive Motor lenses. High quality autofocus from K100D-Super onwards. Mostly (but not all) backwards compatible with older screw-driven autofocus cameras like the K100D, K110D, 1stD etc.

The 18-55mm standard zoom you have has f3.5 at its widest end and f5.6 at the 55mm end. To do better, you need to decide where you want your new lens to operate - normally speaking 30mm/f1.4 (Sigma) is wide and good for low-light shooting but not too special when it comes to portraits etc. FA50mm/f1.4 is a great lens but there is also an f1.7 version which is almost as good and a whole lot cheaper. Good for portraits and general shots. Pentax 35mm/f2.4 is the newest kid on the block and is a great compromise between very high quality and low price - it seems to be a very desirable lens and, at the price, virtually a no-brainer.

Wider than 30mm will not get you a very good all-purpose lens, more specialist and higher priced stuff like the DA14mm/f2.8.
11-14-2011, 02:17 PM   #8
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You have all been so helpful - thank you very much for all the information...I know what I need to look for now! Many thanks to you all again

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