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05-22-2010, 10:57 AM   #1
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A-645 120mm f4 macro vs 150mm f3.5

Hello,

I just recently acquired a A-645 120mm F4.0. Just a disclaimer I do not shot any macro nor intent to. I am just interested in general sharpness and some close focussing (from time to time). I just took a few shots with it yesterday as a general lens. These shots seems to me slightly sharper than the 150mm. Is it just a concidence on a few shots or is my "gut feeling" shared by more experienced shooters with both lenses.

Cheers,

Luc.

05-22-2010, 03:38 PM   #2
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I think the 120mm is a better lens overall, obviously a half stop slower, but you're certainly looking at a sharper lens if you pick up the macro. The downside is obviously that the focusing ring needs to be turned significantly more, making focusing slower.

Adam
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05-22-2010, 05:20 PM   #3
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The 120mm is a great lens. I have both, and haven't had them for too long, but I was astonished by shots made with the 120mm, not just their sharpness, but their overall feel. That may be coincidence but I doubt it.
Mind, just yesterday I found out the hard way that you cannot focus very closely with the 150/3.5. That's something the 120mm obviously will allow!
05-22-2010, 11:41 PM   #4
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the FA-645 150mm f/2.8 by virtue of it's internal focusing mechanism, is able to focus much closer than the 150 f/3.5 version. And you gain an extra half stop of speed from the lens. The 120mm f/4 macro is a very good performer across the focusing range, though at close focusing you have to watch out for vignetting on full frame 645.


Last edited by Digitalis; 05-23-2010 at 05:44 AM.
05-23-2010, 05:31 PM   #5
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Thanks guys, this confirms the first feel for this lens. It is just a little bit big to fit in my MF backpack so I will have to find a way to accommodate.

Here is one:

Efke 25, stand development Rodinal/Xtol



Cheers,

Luc

Last edited by lbenac; 05-24-2010 at 06:31 PM.
05-24-2010, 11:29 AM   #6
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The 120Macro is an excellent lens. But it has a harsh bokeh (like many other well corrected optics); it can be seen in the dog photo above....
05-24-2010, 06:05 PM   #7
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I wouldn't be so quick to judge pal. producing good bokeh becomes more problematic the wider the aperture gets and the closer the focus point is and contrasty backgrounds don't really help either.

what I see is perfectly acceptable for an 8X10" print.
05-24-2010, 06:36 PM   #8
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I guess everything is a trade-off. I do like the detail on the dog. He is a Neapolitan Mastiff silver grey and the shot is a good rendering of both tonality of the robe and geography of his face. I know him well and it is not an easy subject but the lens provided some nice details.
It might not be enough to win the day as a general purpose short tele.

Cheers,

Luc

05-25-2010, 12:09 AM   #9
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I just ordered a 120mm macro (A) from KEH today so I'm anxious to see how it performs. I have the 150mm f3.5 also, but wanted the 120 specifically for closeup photography.

I also have the Hasselblad/Zeiss 120mm Makro-Planar CFi lens.....it will be interesting to see how these two macro lenses compare. I will post some comparison shots here when I get a chance.

Gary
05-25-2010, 06:57 AM   #10
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QuoteOriginally posted by bensonga Quote
...I also have the Hasselblad/Zeiss 120mm Makro-Planar CFi lens...

Gary
Drool, I've been eying that lens. But I may have to settle for a CF T* instead.
05-25-2010, 07:22 AM   #11
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QuoteOriginally posted by bensonga Quote

I also have the Hasselblad/Zeiss 120mm Makro-Planar CFi lens.....it will be interesting to see how these two macro lenses compare. I will post some comparison shots here when I get a chance.

Gary
Do you have a HaBla V -> P645 adapter ? I´am interested how it works in daily practise.

Comparing both lenses might be surprising:

Pentax 645 FA 35mm Review
(other lenses but a astonishing result)
05-25-2010, 07:24 AM   #12
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QuoteOriginally posted by tuco Quote
Drool, I've been eying that lens. But I may have to settle for a CF T* instead.
IMHO the same optics , different only by coating
05-25-2010, 07:29 AM   #13
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QuoteOriginally posted by veraikon Quote
IMHO the same optics , different only by coating
And price
05-25-2010, 07:54 AM   #14
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QuoteOriginally posted by tuco Quote
And price
of course :ugh:
05-25-2010, 01:11 PM   #15
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QuoteOriginally posted by veraikon Quote
Do you have a HaBla V -> P645 adapter ? I´am interested how it works in daily practise.

Comparing both lenses might be surprising:

Pentax 645 FA 35mm Review
(other lenses but a astonishing result)
No, I don't have one of these adapters.....but might as well look for one so I can make full use of my Zeiss lenses and get a more accurate comparison with the Pentax glass. I like the handling of the 645 camera alot!

Heck....just decided to order one. Got the Fotodiox adapter from Amazon for $80.

Gary

Last edited by bensonga; 05-25-2010 at 01:16 PM.
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