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01-10-2010, 12:33 AM   #1
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FA 28-70mm F4

Hey I just picked up this guy for pretty cheap, my goal was to see if I liked carrying this with my sigma 10-20mm as a two lens combo while mtn biking. If I dig the focal length I will probably upgrade to the sigma's 2.8 version later.

Anyone else have one of these plastic gems?

01-16-2010, 10:51 AM   #2
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wow I'm gone for a week, 132 views, and not one response! jeez did I say something wrong?
01-16-2010, 11:31 AM   #3
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Isn't it a somewhat rare lens? I'm guessing that not that many people owns it
01-16-2010, 04:46 PM   #4
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QuoteOriginally posted by cb750r Quote
wow I'm gone for a week, 132 views, and not one response! jeez did I say something wrong?
We all thought you were going to tell us something exciting about the lens.

It has a reputation for element separation, one thing that keeps me from getting one to try. Supposed to be nice otherwise. I'm not sure I would ever use it anyway; I have a lot of primes that are two stops or more faster in that range.

01-16-2010, 06:17 PM   #5
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The FA 28-70/4 is a great little lens that delivers superb pictures. It is not much appreciated today, because people find the focal range a bit awkward when used on APS-C crop format DSLRs.

QuoteOriginally posted by Just1MoreDave Quote
It has a reputation for element separation, one thing that keeps me from getting one to try. Supposed to be nice otherwise. I'm not sure I would ever use it anyway; I have a lot of primes that are two stops or more faster in that range.
Element separation can be a serious issue with some copies of this lens. It's something that a buyer should be aware of, as it can totally ruin a lens and there is no affordable cure for it. So, better to buy from a reputable seller with a good return policy.

On the other hand, as this lens has been out of production for a long time now, I think it's a safe bet to consider that if a copy of the lens shows no sign of element separation today, then it can be considered that it will remain free from the disease in the future.

Cheers!

Abbazz
01-16-2010, 07:34 PM   #6
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Great little lens

I have a copy of this little "plastic fantastic". It a great little zoom lens if it you can find a good one without the lens separation. Some dealers may still have new or near new copies around. I know Henrys of Canada had several a while back.
Image quality quite good for the value as they are relatively inexpensive.

JayT



01-17-2010, 10:46 AM   #7
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I've got one, and I find that the images tend to be soft, wide open, at 70mm, but sharpen up dramatically when stopped down to 5.6. Like others said, it's a great lens.

I also like it because it weighs practically nothing, and combines well with a MZ/ZX series of cameras to make a lightweight camera to bring wherever I go.
01-17-2010, 11:28 AM   #8
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Here's a couple from my first day out with it, So far so good! I think I'm going to like this focal length as a combo with my 10-20. infact I spent an afternoon shooting just those two lenses and was super happy. If this keeps up I'll probably upgrade to a Sigma or Tamron version with 2.8 f stop





01-17-2010, 12:40 PM   #9
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It lives on my MZ-3.
I love it; f/4 is sharp enough .
It was also fine on my (now sold) K10D.
It is sooo light and it produces far better photos than you would expect from its rather flimsy look.
01-17-2010, 05:21 PM   #10
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the 28-70/f4 is an ok lens. but nothing spectacular.
07-09-2012, 04:42 PM   #11
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What are the symptoms or signs of "element separation" with this lens. Does it simply corrupt the IQ?
07-09-2012, 08:28 PM   #12
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QuoteOriginally posted by tram57 Quote
What are the symptoms or signs of "element separation" with this lens. Does it simply corrupt the IQ?
No, it not just simply corrupt the IQ, but also make the lens totally useless.



It's the two elements right behind the aperture blades (on the right side if looking at the above pic) that become separated quite often for this lens. I myself have seen not less than 3 copies w/ this problem.

Optically it's ok for a kit lens, definitely not as good as 28-105/3.2-4.5 or FA24-90/3.5-4.5 from what I experienced.
07-10-2012, 07:54 AM   #13
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thanks

sound like this is not subtle and would be easy to recognize if it were to have occured. Thanks --
07-10-2012, 12:11 PM   #14
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Hello,

I own a FA 28-70 f/4 and think that optically is a very good lens , but with a build and feeling in the hands that canīt compete with any of my old K lenses ( K 28 f/3,5, K 35 f/2 , M 50 f/1,4 , etc.) . However I never had any problem concerning separation of elements.
According to a popular ( enclosed link ) classification of lenses as regards its MTF properties FA 28-70 f/4 scores 3.2 , which is not bad at all.

C
07-18-2012, 03:54 PM   #15
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Well, I purchased one. Remarkably compact and elegant, especially for a FF compatible lens. so far I am favorably impressed with the IQ.
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