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12-31-2015, 06:19 PM   #1
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FA lenses sharpness with 645Z

I'm really curious about FA lenses' sharpness on 645Z. I have 75mm f2.8 but not other lens that I'm going to talk about

Does anyone have full size original pics for wide open aperture and around F/11~16 with

- FA 80-160
- FA 45-86
- FA 75
- FA 120 Macro
- FA 200

?

or any thought?

12-31-2015, 06:28 PM   #2
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Others might be prepared to share full size RAWs etc at different apertures, you are asking for rather a lot of goodwill to be honest.

I haven't used the FA200 but the others are all very good sharp lenses on the D and Z. The 75 is very light the 80 - 160 and the 45 - 85 are fairly heavy, but very sharp. I rarely shoot wide open, rarely a need to.
12-31-2015, 07:24 PM   #3
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QuoteOriginally posted by itshimitis Quote
Others might be prepared to share full size RAWs etc at different apertures, you are asking for rather a lot of goodwill to be honest.

I haven't used the FA200 but the others are all very good sharp lenses on the D and Z. The 75 is very light the 80 - 160 and the 45 - 85 are fairly heavy, but very sharp. I rarely shoot wide open, rarely a need to.
It should be nice if I can see those samples or maybe not. Do you have any trouble of using zoom lens because of viewfinder brightness?
12-31-2015, 07:38 PM   #4
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I wasn't too thrilled with the zooms on the 645Z, but the FA primes you listed should be just fine.


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12-31-2015, 07:55 PM   #5
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I have the FA80-160 and the DFA90 macro and I find the 80-160 very comparable to the prime at 90mm to the point that for general stopped down landscape use I am not using the prime much at all.

Same goes for the 80-160 vs the FA150 when stopped down to f11 or more.
12-31-2015, 08:34 PM   #6
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I don't own a single one of those lenses, otherwise I would be more than happy to shoot some samples.
01-01-2016, 08:55 AM - 1 Like   #7
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I use those two zooms making a living on general portraits. Using them stopped down to 8 or 11 they are certainly up to and beyond that task. For my more careful fine art work, either is good stopped down on the short to middle range, Not as sharp at the long end for either. I use several A lenses since I don't want auto focus on the fine art work. 35, 120 macro, 150 and 200. Some of my favorite lenses are the Carl Zeiss Jenas made for Pentacon Six. The 180 is a great portrait lens. I also have a 300 which is a beast. The CZJ's are great wide open. I tested a CZJ 50 against the Pentax 45-85 and was very surprised to find the Pentax was clearly superior, but the Zeiss 50 does have a nice look. How suitable a lens is depends in large part on what you ask of it. Can you work at f11 or must it be sharp wide open? Will field curvature be an issue or not relevant on your subject? Is sharpness your be all and end all or is the character of the lens more important? Is size and weight a prime concern for backpacking? Sometimes I want razor sharp and sometimes I will put on the Pentax 67 120 soft. I also have an Imagon adapted to 67/645. I also have a 30mm fisheye adapted to 67/645. Also a 67 105 2.4 is a wonderful lens. I like lenses that will give me a look I can't get any other way. I am just not going to expect a lens to be all things for all purposes. One thing is that especially the A lenses are dirt cheap. I'd like to have a new 90 macro, but at $4k I don't think it can be any better that my 120 A macro which was $200. Ditto on the 28-45 which I probably will get based on the glowing reviews. If I had a long hike to make, I'd leave that behind in favor af a 35 A and 120 macro A which together do not weigh as much. Buy from a source that will let you return it and test for your purpose. It's one thing to discuss the lenses and another to have results of your own to go by, I'd also watch out for someone else's test. Sloppy technique will make a test useless and misleading.
01-01-2016, 09:00 AM   #8
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QuoteOriginally posted by thomasfallon Quote
I use those two zooms making a living on general portraits. Using them stopped down to 8 or 11 they are certainly up to and beyond that task. For my more careful fine art work, either is good stopped down on the short to middle range, Not as sharp at the long end for either.

I use several A lenses since I don't want auto focus on the fine art work. 35, 120 macro, 150 and 200. Some of my favorite lenses are the Carl Zeiss Jenas made for Pentacon Six. The 180 is a great portrait lens. I also have a 300 which is a beast. The CZJ's are great wide open.

I tested a CZJ 50 against the Pentax 45-85 and was very surprised to find the Pentax was clearly superior, but the Zeiss 50 does have a nice look. How suitable a lens is depends in large part on what you ask of it. Can you work at f11 or must it be sharp wide open? Will field curvature be an issue or not relevant on your subject? Is sharpness your be all and end all or is the character of the lens more important? Is size and weight a prime concern for backpacking? Sometimes I want razor sharp and sometimes I will put on the Pentax 67 120 soft. I also have an Imagon adapted to 67/645. I also have a 30mm fisheye adapted to 67/645. Also a 67 105 2.4 is a wonderful lens.

I like lenses that will give me a look I can't get any other way. I am just not going to expect a lens to be all things for all purposes. One thing is that especially the A lenses are dirt cheap. I'd like to have a new 90 macro, but at $4k I don't think it can be any better that my 120 A macro which was $200. Ditto on the 28-45 which I probably will get based on the glowing reviews.

If I had a long hike to make, I'd leave that behind in favor af a 35 A and 120 macro A which together do not weigh as much. Buy from a source that will let you return it and test for your purpose. It's one thing to discuss the lenses and another to have results of your own to go by, I'd also watch out for someone else's test. Sloppy technique will make a test useless and misleading.
I agree with what you say, but it's incredibly hard to read as a long block of text with no paragraphs. Your last part (the last paragraph, as I have broken it up) is the reason why I don't tend to do test shots. You have to know what you are testing for, and that kind of shooting doesn't interest me...

01-01-2016, 10:08 AM   #9
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My 75 is very sharp from edge to edge, which is what I need for full-body shots of models. My 45-85 is every bit as good as any prime I've ever owned. It's a very capable performer. I did own the 55mm, but it wasn't all that for me, so I sold it.
01-01-2016, 10:35 PM   #10
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Does anyone have a video or pic of mounted 80-160 lens??
01-01-2016, 11:09 PM   #11
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For samples, why not just go to flickr and do a search for the lens focal length and body. ( 645z 120mm, 645d 120mm, 645z 75mm, 645d 75mm, etc etc).
01-02-2016, 01:49 AM   #12
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I had two copies of the manual 80-160, that uses the same optical setup as the FA. None o them was really sharp. The FA 200 is great wide open at portrait distances, for landscape work, stopping down to f/8 is the minimum to get relly sharp pcitures.
All the others are great for landscape work, although some of them might require to stop down 1/2 or 1 stop until the sharpness gets really crispy.
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