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07-02-2011, 07:03 PM   #1
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Need Help On Selecting a prime and a macro for K-5 50mm/77mm and 50mm macro/100mm mac

hi guys

need some help on selecting a prime lens and a macro.

my choices are

Prime
Pentax-FA 50mm F1.4 and Pentax-FA 77mm F1.8 Limited

For macro
Pentax-FA 50mm F2.8 Macro and Pentax-D FA 100mm F2.8 Macro

All of the lenses are second hand except for the Pentax-FA 50mm F1.4
And the main use for the prime is portrait and light shooting regarding these facts which two lenses would you recommend

thanks in advance

07-02-2011, 07:36 PM   #2
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The FA50/1.4 is fast, agile, and costs rather less than the 77Ltd.
The DFA 100/2.8M gives a better working distance than the 50M.
And if you have the Fast Fifty, then the Macro Fifty is redundant.

Many love the 77Ltd as a headshot portrait lens. But a 50 works there too. I can't comment on the 77's optics. AFAIK their main functional difference will be in working distance. You would work closer with the 50 than the 77. This depends on comfort levels with you and your subjects. If you want to work further, use a longer lens; the 100 macro is fine for headshot portraits too, from greater distance.

Last edited by RioRico; 07-02-2011 at 08:27 PM.
07-02-2011, 07:59 PM   #3
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personally, i would go with the 50 and the 100.
the 50 is a lot more versatile for day-to-day situations than the 77 is and is also a great portrait lens. The 100 macro is a fantastic macro and also can function as a fantastic portrait lens, so you can use that if you want to get some more distance from your subject and/or shoot tighter.
07-03-2011, 04:24 AM   #4
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thanks for the info ,after reading the reviews here im tempted to go for a FA43limited or a DA40 limited instead of the FA50 and now i cant seem to choose between those two

07-03-2011, 08:44 AM   #5
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Everyone loves the DA40, but then you won't have any fast glass. You could pick up an A50 1.7 for cheap. The 43 limited/100mm macro option would be awesome.
07-03-2011, 09:08 AM   #6
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If the issue is the utility of a given focal length rather than the character of a specific lens invest a few $$ in an older zoom that covers the FL range you're interested in and spend a few weeks exploring the world as you intend to shoot it.

Then you can make decisions about a high priced purchase based upon your own experience. Even the possible frustration of using a slower lens or one with less than stellar corners will tell you something about your actual priorities and photographic requirements.

H2
07-03-2011, 09:09 AM   #7
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77mm for prime, and 100mm macro wr
07-03-2011, 04:46 PM   #8
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QuoteOriginally posted by RioRico Quote
Many love the 77Ltd as a headshot portrait lens. But a 50 works there too. I can't comment on the 77's optics. AFAIK their main functional difference will be in working distance.
I would go with the FA 50 + D FA 100 combo.

The FA 77 is the better lens as far as optical comparisons go (i.e., not real life), but it's just not that versatile on digital. It's a long lens. The FA 77 was designed for film, and the fun thing is that the FA 50 becomes a 75mm on digital... it's ALMOST the field of view that the FA 77 was designed for!

Furthermore, both lenses really need to be stopped down to f2.5 to start looking really great, so the difference is speed between them in not so important. Also, 50mm is just going to be generally more useful than 77mm.

77mm is good if you can afford lots and lots of primes, 50mm is a better all rounder.

Consider this 3 prime set up...

1) DA 21

2) FA 50

3) DFA 100

Pretty versatile.

07-03-2011, 04:57 PM   #9
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For your needs I would recommend: FA43 and DFA 100 wr, that gives you a short tele/marco/wr lens and a fast/small/normal lens. Add a DA15 or DA21 and you have a killer 3 lens combo that could handle just about anything

Last edited by TOUGEFC; 07-04-2011 at 03:09 AM.
07-04-2011, 02:47 AM   #10
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thankz guys but i should mention i already have the DA 16-45 and DA 55-300

so i decided to go with this combination
sigama 10-20mm ,
FA43 ltd and
DA100 macro.

or

sigama 10-20mm ,
DA *55 WR and
DA100 macro

what are your guys thoughts of these two combinations ????

Last edited by nirVaan; 07-04-2011 at 04:23 AM.
07-04-2011, 04:37 AM   #11
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The Sigma 10-20 is a good choice. (I have the Tammy 10-24, but so what?) The DA100M is a good choice. (I wish I had the WR version.) The 43 and 55 are quite different, and both are slower than the FA50/1.4, which is my gotta-get-the-picture lens. I still recommend the FA50.
07-04-2011, 07:03 AM   #12
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QuoteOriginally posted by RioRico Quote
The 43 and 55 are quite different
+1. Why do you want something between 40 and 55? Is this for portraits or a simple normal lens?
07-04-2011, 11:57 AM   #13
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Since we're spending your money what about the sigma 8-16? It is super wide and you already have the 16-45, no overlap.
07-04-2011, 01:36 PM   #14
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QuoteOriginally posted by paperbag846 Quote
+1. Why do you want something between 40 and 55? Is this for portraits or a simple normal lens?
to be used as a normal lens mostly and as for SIGMA 8-16mm cant really afford it its nearly twice as much as the 10-24mm
07-04-2011, 01:49 PM   #15
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QuoteOriginally posted by nirVaan Quote
to be used as a normal lens mostly ...
Normal would be more like 28mm, a great focal length for your camera. 40mm is definitely long-normal or short-tele. 50-55mm is thought of as portrait, not normal, although some of the best lenses around are ~50mm. Yeah, 28 is for seeing what's in front of you, while 50 is for concentrating more closely, IMHO.

Last edited by RioRico; 07-04-2011 at 05:04 PM.
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