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02-14-2013, 10:25 AM   #1
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Pentax K 45-125 or Pentax A 28-135

Hi

I'm looking for a medium range zoom that can be found for less than 150 and after hours of trawling the forums and databases I found these particular lenses to be quite suitable:

SMC Pentax 45-125mm F4 Reviews - K Zoom Lenses - Pentax Lens Reviews & Lens Database

SMC Pentax-A 28-135mm F4 Reviews - A Zoom Lenses - Pentax Lens Reviews & Lens Database

There are many ways to compare the two but I was just wondering what others would go for, any alternatives would be welcome !

Many Thanks

Tom.

02-14-2013, 10:34 AM   #2
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For me the "A" lens is faster in use with later cameras, no green button procedure to follow.
02-14-2013, 11:03 AM   #3
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QuoteOriginally posted by kerrowdown Quote
For me the "A" lens is faster in use with later cameras, no green button procedure to follow.
Thats probably its biggest advantage, along with a greater focal range length. Although it does appear to be rather heavy.
02-14-2013, 12:33 PM   #4
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What about the A 35-105mm f/3.5?
From everything I've read, it's better than both those lenses.
I've had 3 different copies of the 35-105 and all were superb. After selling the first one, I regretted it so I bought a second, then for some reason I decided to sell that one and really regretted it, so I bought a third one and have vowed never to sell it.







02-14-2013, 12:47 PM   #5
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QuoteQuote:
What about the A 35-105mm f/3.5?
From everything I've read, it's better than both those lenses.
I've had 3 different copies of the 35-105 and all were superb. After selling the first one, I regretted it so I bought a second, then for some reason I decided to sell that one and really regretted it, so I bought a third one and have vowed never to sell it.
Ah, the fabled "Stack of Primes".....

Its seems to be the best in this range, which is probably why it fetches such high prices on eBay.

If it was in budget it would deifnitely be the one, lets hope you stick to your vow.

Last edited by tomw95; 02-14-2013 at 01:16 PM.
02-14-2013, 01:11 PM   #6
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QuoteOriginally posted by tomw95 Quote
Thats probably its biggest advantage, along with a greater focal range length. Although it does appear to be rather heavy.
Yes, its huge, both heavy and large. The 45-125 handles much better.
02-14-2013, 01:14 PM   #7
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QuoteOriginally posted by Swift1 Quote
What about the A 35-105mm f/3.5?
From everything I've read, it's better than both those lenses.
I've had 3 different copies of the 35-105 and all were superb. After selling the first one, I regretted it so I bought a second, then for some reason I decided to sell that one and really regretted it, so I bought a third one and have vowed never to sell it.

]
Yes, I have a mint copy of the A35-105/3.5 Lens and the first time I examined the results on digital I was SHOCKED as to how close the images look to something coming from a great prime lens.
02-14-2013, 01:23 PM   #8
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The 35-105 also appears to have the edge with bokeh with this being emphasised in the in-depth review below.

Despite being outperformed under normal circumstances by real primes, the 3.5 constant aperture is still better than the previous two lenses.

Pentax-A 35-105mm F3.5 Review - Review - PentaxForums.com

02-14-2013, 02:01 PM   #9
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QuoteOriginally posted by tomw95 Quote
Ah, the fabled "Stack of Primes".....

Its seems to be the best in this range, which is probably why it fetches such high prices on eBay.

If it was in budget it would deifnitely be the one, lets hope you stick to your vow.
If you're patient and keep looking, I often see the the 35-105 come up for sale for anywhere from US $75-150.
I got mine for $75 attached to a Super Program that I sold for $40.
02-14-2013, 02:57 PM   #10
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28/135 all the way.
I've used the 35/105...and yes it's good, but the 28/135 is a VERY good zoom....with a very useful bit of extr zoom. When I was an LX owner, this is the lens that was on it for most of the time. Ya don't hear much about the 28/135....yes, it's heavy.....but it's also an awesome piece of quality Pentax glass.
Cheers, Pickles.
02-14-2013, 03:47 PM   #11
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For medium zooms I have the FA28-105/4-5.6IF, M35-70/2.8-3.5, A35-105/3.5 & K45-125/4.

The A35-105/3.5 would be my top pick.

Phil.
02-14-2013, 07:34 PM   #12
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The A28-135/4 is really big. I took a photo of it at maximum size on an MX just for fun. The front element is not that recessed either, so a (77mm!) hood might be necessary.



If you really like the 135 end, see if you can find the SMC Pentax-F 35-135mm f3.5-4.5 instead. The maximum aperture is pretty close, range pretty close. You get autofocus and a big side benefit, the focal length is reported to SR so you don't have to enter it manually. The lens is a reasonable size and weight and takes 58mm filters. This series of lenses are ugly and kind of clunky but perfectly functional. I've bought and sold one for $50 so it's a good value.
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