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SMC Pentax-FA 645 45-85mm F4.5

Sharpness 
 9.5
Aberrations 
 9.0
Bokeh 
 7.5
Handling 
 8.5
Value 
 8.5
Reviews Views Date of last review
5 9,939 Mon August 8, 2011
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Recommended By Average Price Average User Rating
100% of reviewers $850.00 9.20
SMC Pentax-FA 645 45-85mm F4.5
supersize


Description: Autofocus zoom reaching from wide angle to normal focal lenth. The angle of view corresponds to approximately a 30-55mm lens in the 24x36 format. It is a versatile lens for landscape photograph and it repalces three prime lenses, 45mm, 55mm, and 75mm.


WeightDiam x LengthFilter SizeMin. FocusMax. Magnification
870 g85 x 99.5mm77 mm50 cm0.22x
Diagonal FoV (645)Horizontal FoV (645)HoodMin. ApertureMax. Aperture
75-45 degrees64-37 degreesPH-RBD 77 bayonetf/32f/4.5
Diagonal FoV (645D)Horizontal FoV (645D)CaseAutofocusOptical Construction
63-36 degrees52-29 degreesS130-160Yes (screw drive)11 elements, 9 groups
Diagonal FoV (APS-C)Horizontal FoV (APS-C)
36-19 degrees30-16 degrees
Features:
Screwdrive AutofocusAperture RingAutomatic ApertureMedium-Format SupportAdapter needed for DSLRs
Price History:


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Author:
Showing Reviews 1-5 of 5
Junior Member

Registered: November, 2009
Posts: 29
Lens Review Date: August 8, 2011 I can recommend this lens: Yes | Price: $750.00 | Rating: 8 

 
Pros: quality of images: sharp
Cons: size and weight
Sharpness: 10    Aberrations: 9    Bokeh: 9    Handling: 8    Value: 8   

This lens was an early acquisition for my 645D. It is sharp and contrasty. At 55mm, it is very sharp and seems to be better than the latest P645 55/2.8 lens.

However, the 85mm end is not so long and the bulk of the lens is not insignificant. It therefore gets left at home. Instead, I take the 35 FA and 75 FA. By using the 35 FA, I can crop a little and still get the 45mm equivalent, while cropping the excellent and very light weight 75/FA, I can get the 85mm look if needed. And if weight is not an issue, I'd add the P67 55/4 (latest version), which is even excellent for macro work, to cover the middle 55mm range. So this zoom sits in my closet.
   
Site Supporter

Registered: June, 2010
Location: Hamburg
Posts: 236
Lens Review Date: June 15, 2011 I can recommend this lens: Yes | Price: $800.00 | Rating: 9 

 
Pros: relatively sharp
Cons: slow, not that sharp wide open and at 22/32
Sharpness: 9    Aberrations: 9    Bokeh: 6    Handling: 9    Value: 9   

It's a great lens for travelling, I don't find it that heavy. It's probably the only lens you need on tour. However, I rather use my 67 45mm (with adapter on 645D) for time exposure as it is way sharper than the zoom at all apertures. The bokeh could be nicer wide-open.
I am very used to the sharpness of my 67 lenses but I would still recommend this great 645 zoom.
   
New Member

Registered: March, 2011
Location: arlington va
Posts: 19
Lens Review Date: April 3, 2011 I can recommend this lens: Yes | Price: $1,400.00 | Rating: 10 

 
Pros: sharp, color, contrast, great lens hood
Cons: heavy

i agree that it is heavy

however, it is worth it

for years i used a 45mm, 55mm, and 150mm for the few events and weddings i would shoot each year

once i started using the 45mm-85mm and saw the results, i was hooked

yes, it does have some distortion at the wide end, but not much, and it *is* sharper than the 45mm prime
   
Site Supporter

Registered: February, 2010
Location: Fowlmere, UK
Posts: 489
Lens Review Date: November 11, 2010 I can recommend this lens: Yes | Price: $450.00 | Rating: 10 

 
Pros: sharp, excellent colour rendition
Cons: heavy; bit slower than primes

Briefly though inexpertedly compared this lens to the 2.8/55 and 2.8/75mm A-lenses via an adapter (and that also indicates the restrictions, because the borders were not used on my dslr). But it tends to confirm what I sensed without direct comparison on film. This lens has a nicer colour capture than its fixed lens counterparts. It is very sharp, too. If I do not need f2.8, I'd choose this lens.

Disadvantage? It is heavy. Yes, heavy enough to wonder whether I would not take the 2.8/55 and 75mm instead.

I'd give it 9.5 if that were an option. I have not compared this lens rigorously enough to the 75mm primes to give a balanced opinion; apparently, corner sharpness is deteriorating with focal length. But sharpness is not all. The overall impression is still good I think.
   
Pentaxian

Registered: December, 2007
Location: Norway
Posts: 1,569
Lens Review Date: March 20, 2008 I can recommend this lens: Yes | Price: N/A | Rating: 9 

 
Pros: Optical quality, Built quality
Cons: Size and weight

An extraordinarily good zoom lens with fine built quality; all metal. Some vignetting wide open and slight distortion. Optically it outperforms the FA 45/2.8 prime lens.
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