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05-20-2017, 05:05 AM   #1
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Pentax 645 A 150 or the A 120 Macro

I am trying to decide which one to get for portraits and general shooting . Thanks I am using the 645D

05-20-2017, 05:09 AM   #2
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I have both and the 645D

And I think the 150 is somewhat better for portraits for subject isolation but you have a very long working distance.
the 120 is more versatile give macro

At the end I would choose the 120.
05-20-2017, 06:54 AM   #3
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QuoteOriginally posted by spartan Quote
And I think the 150 is somewhat better for portraits for subject isolation but you have a very long working distance.
the 120 is more versatile give macro

At the end I would choose the 120.
I am concerned about the Extra Weight on the 120. I don't need Macro.
05-20-2017, 09:19 AM   #4
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QuoteOriginally posted by rollsman4 Quote
I am concerned about the Extra Weight on the 120. I don't need Macro.
It's not that heavy....

The zooms are heavy, but singly are quite manageable, the 28-45 less so. It's after you decide to have 4 or five lenses in your bag that things get interesting.

05-20-2017, 09:53 AM   #5
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I have the FA versions of both these lenses and really do prefer the 150mm for portraiture, the weight doesn't seem like a big difference, but the macro is quite a bit more... sluggish-feeling than the 150 I'd say?
It's more front-heavy, so you do feel the weight on there. It also has at least twice the focus throw, so you'll really be working that focus ring.
05-20-2017, 10:05 AM   #6
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QuoteOriginally posted by Kolor-Pikker Quote
I have the FA versions of both these lenses and really do prefer the 150mm for portraiture.......
Is that because the FA150 is f/2.8 (unlike f/3.5 of the A version) or are you stopping down to where they can compare?


As a manual focus lens seems to fit the bill then I'd suggest that the 67-165/2.8 is thrown into the mix. Perhaps not as crisp as the 120/4 but renders very pleasingly for portraits.

Bob
05-20-2017, 11:25 AM   #7
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Just to make sure, you are talking about the A versions, not the FA?

The 645-A 120mm f/4 is a sharper and much more versatile lens for general shooting but at nearly double weight of the 645-A 150mm f/3.5 (735g vs. 435g) the weight doesn't make it very user friendly for general shooting.

For portraits I love the 150mm (also built-in hood) rendering. It's isn't as sharp as the 120mm, but I don't need or want that for portraits. For general shooting, I like bringing a 35mm, 75mm, and the 150mm. I would only go with the 120mm if I really needed macro.

05-21-2017, 01:56 AM   #8
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QuoteOriginally posted by Bob L Quote
Is that because the FA150 is f/2.8 (unlike f/3.5 of the A version) or are you stopping down to where they can compare?
With both lenses at f/4 the 150mm still renders more pleasing blur imo. I don't often shoot the 150mm wide open simply because it's a tad too soft for my taste, but it does hold equal footing with the macro at f/5.6 and down.
I'm not sure of the extent of the differences between the A and FA past aperture, but I don't think it should amount to that much.
05-21-2017, 08:41 AM   #9
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Thank you for all your feedback. I decided to go with A 150.
05-24-2017, 03:29 AM   #10
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given the crop factor, the 75mm f2.8 should do fine. if you want mre reach, the 80-100mm should cover it.
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