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04-28-2012, 10:08 PM   #1
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Pentax DA 70mm F 2.4 Limited (Silver)

Just got one. Beautiful lens. Haven't really tried it yet, except for a couple of pictures.

I generally put B+W UV or clear filters on my lenses.

Not sure about this one as it seems very well protected by it's lens hood.

Opinions?



Also any assessments of this lens ?

Reviews seem quite good, but I always prefer personal experience anecdotes.

04-29-2012, 06:29 AM   #2
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I have a b+w uv filter on my da 70 and quite frankly can't see any difference in IQ when it is on and when I don't use it. Hood is great for protecting the front element. But if you want to go "hood-less" to make the da 70 much smaller and and more like a pancake lens, it is nice to have the filter on for peace of mind protection.

I love my da 70; gorgeous and micro contrast. probably my sharpest lens!
04-29-2012, 06:33 AM   #3
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I don't know anything about silver ones ,
but I did rush to buy a black one from Amazon on April Fool's Day
while they were still offering the old price.

Haven't bothered with a "protection" filter.

Very pleased with the IQ: nice colors and bokeh.
Under certain conditions it renders a little like the DA 35 Macro.
With the DA70, the phase-detect AF on my K-x is really fast.
Had to use contrast-detect AF with live view
shooting over a fence a couple of days ago,
and even that took no more than a second.

Some users are concerned about the 70cm MFD.
Avoiding supplementary lenses,
it would take an A-type extension tube (or defenestrated TC) to get closer.
Since I only have M-type tubes, I haven't tried it on extension yet,
and would be interested to hear if it plays well with A-type tubes.
04-29-2012, 12:38 PM   #4
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I bought my DA70 (black) used to take some quality shots of my baby great-grandson. It arrived with the hood stuck on the lens and so I used it with no filter until I managed to remove it.
With a Hoya UV filter I can see no reduction in quality over being used filter-less.
You will not be disappointed with this lens, it is ideal for portraits of babys, kids and adults. Enjoy!

04-29-2012, 01:11 PM   #5
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QuoteOriginally posted by Dorsetboy Quote
It arrived with the hood stuck on the lens and so I used it with no filter until I managed to remove it.
How did you get it un-stuck?
04-29-2012, 03:43 PM   #6
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I spent several hours trying to unscrew it while being careful not to damage the lens, Suddenly it unscrewed, I still cant figure it out but Im happy now!
05-01-2012, 06:53 AM   #7
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I think the hood provides enough protection with this lens so I don't bother with a filter at all.

Tom G
05-01-2012, 01:21 PM   #8
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As you'll see if you browse for other discussions on the topic, many if not most of us don't use UV filters, ever, but do use hoods, always. That,s because UV filters never improve an image but often degrade, and hoods never degrade an image but often improve it, and both provide roughly the same amount of protection - which is to say, the lens is still toast if you abuse it unusually badly, but under normal circumstances with normal care, no harm will come to the lens.

05-01-2012, 01:30 PM   #9
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QuoteOriginally posted by Marc Sabatella Quote
UV filters never improve an image
Compare UV, Skylight and Haze Filters:

"Remember that films and the CCDs behind your camera lens are sensitive to ultra-violet (i.e.. UV) rays, although they are invisible to our eyes. If you allow UV light to be recorded on the CCD, it is likely that your image will look bluish and the color casts may not be acceptable. Moreover, UV and skylight type filters can also eliminate the lack of sharpness caused by UV radiation and reduces distant haze."
05-01-2012, 01:42 PM   #10
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QuoteOriginally posted by Marc Sabatella Quote
UV filters ... and hoods ... provide roughly the same amount of protection - which is to say, the lens is still toast if you abuse it unusually badly, but under normal circumstances with normal care, no harm will come to the lens.
If you are photographing in environments with greasy aerosols,
a hood will not stop the particles contacting the lens surface,
while a UV filter will.

Sure, Pentax SP coating is good, but not that good.
05-02-2012, 12:42 PM   #11
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QuoteOriginally posted by lytrytyr Quote
Compare UV, Skylight and Haze Filters:

"Remember that films and the CCDs behind your camera lens are sensitive to ultra-violet (i.e.. UV) rays, although they are invisible to our eyes. If you allow UV light to be recorded on the CCD, it is likely that your image will look bluish
Sometimes true for film, virtually never for digital. And even to the extent to which some digital sensors might be sensitive enough to UV light to show a color cast, WB would simply correct for it.

In any case, the pictures in that article certainly don't make for convincing demonstrations. These claims are mostly just lines put forther by filter salesmen, and the images bear that out.
05-02-2012, 12:43 PM   #12
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QuoteOriginally posted by lytrytyr Quote
If you are photographing in environments with greasy aerosols,
a hood will not stop the particles contacting the lens surface,
while a UV filter will.

Sure, Pentax SP coating is good, but not that good.
True. Similar for unusually damp/salty conditions, like the beach. But we were talking general use here, not special corner cases.
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