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Old Jun 13, 2007, 4:05 PM   #1
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I am considering to buy an Alpha100 together with this lens: Sigma 20-40mm F2.8 EX DG ASPHERICAL
(http://www.sigmaphoto.com/lenses/len...mp;navigator=1)
I'll tell you my reasons:
I am planning to buy the new Alpha flagship from Sony (i'm guessing it will be called the A500) sometime in 2008 ... but need a digital body that fits my minolta 28-105 mm and my 70-300 mm lenses..and my 5400 HS flash unit on very short notice.
This A500 will most likely have a full frame sensor. (not APS-c)
The soon to be released High-amateur model (A300?) will probably be too late for my vacation..AND be a pretty expensive buy..considering it's just for the time that i'm waiting for the flagship-model...
I now HAVE to buy a new lens to close the "wide-angle gap" "under" my 28-105 mm Minolta lens...28 mm is NOT really wide-angle on the A100....and also probably not on the High-amateur model (that's problably APS-c as well)
Because i want to be able to re-use this lens on this fullframe A500 too...i should NOT buy a lens that's only good for APS-C-sensor-camera's.
This lens seems prety good ..AND the DG-lenses from Sigma fit fullframe camera's too.

Well..thats about it. What do you think?? Should i buy this combo?
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Old Jun 13, 2007, 4:43 PM   #2
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I don't think anyone here is going to tell you not to get an A-100, and the Sigma 20-40 seems to be second in quality only to the Minolta G Series 17-35 f/3.5, if you can find one.
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Old Jun 15, 2007, 6:15 AM   #3
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Just so you know the 5400HS flash unit does NOT TTL with the Sony Alpha A-100. I own both and have found that the 5400 will fire, but in TTL mode it will just fire 100% power, the only way to get it to work is to manually power it down. I'm pretty certain it's because the A-100 requires a pre-flash for metering and the 5400 is not capable of that (I think the minolta 7D had the same problems.) I have borrowed the Minolta 5600HS and it works fine, but like I said the 5400 doesn't TTL.

The only other option I might suggest other than the Sigma 20-40 is if you find a fixed minolta 20mm f/2.8 somewhere.
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Old Jun 15, 2007, 10:56 AM   #4
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kb2zuz wrote:
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The only other option I might suggest other than the Sigma 20-40 is if you find a fixed minolta 20mm f/2.8 somewhere.
KEH.com has the 20mm f/2.8 in excellent+ condition, with hood and caps for $429. They also have the 24mm f/2.8 and the 28mm f/2.8. They are all very good lenses.
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Old Jun 15, 2007, 12:09 PM   #5
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kb2zuz wrote:
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The only other option I might suggest other than the Sigma 20-40 is if you find a fixed minolta 20mm f/2.8 somewhere.
I would also recommend the Tamron 20-40mm 2.7-3.5. It does a nice job and they can be had for a reasonable price
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Old Jun 19, 2007, 2:50 PM   #6
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The 20-40mm range is limited. Are you okay with that? If not, consider 17-50 tamron f/2.8; sigma 17-70, KM 28-75 f/2.8.
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Old Jun 19, 2007, 6:03 PM   #7
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limited is right..i use a sigma 24-70 2.8 and a 70-200 2.8...all metal....not the cheep plastic versions



those are my main 2....
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Old Jun 19, 2007, 11:42 PM   #8
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cgl88 wrote:
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The 20-40mm range is limited. Are you okay with that? If not, consider 17-50 tamron f/2.8; sigma 17-70, KM 28-75 f/2.8.
The original poster stated that 28 is not wide enough so I don't think the 28-75 is a good option for him. Despite that, I think the 28-75is still a greatlens to own... in fact it is one of my favorite lenses and stays on one of my 7Ds most of the time.


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Old Jun 20, 2007, 12:19 AM   #9
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MINOLTANUT wrote:
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limited is right..i use a sigma 24-70 2.8 and a 70-200 2.8...all metal....not the cheep plastic versions



those are my main 2....
It's only limited by what you pair it with and it depends on what else you own and what you are shooting. Your two lens solution does cover a nice range. Not as wide as I prefer but you can't always get haveit all with a two lens solution.I sometimes pair the Tamron 20-40 2.7-3.5with the Tamron 35-105 2.8, which gives me a decent working range unless I need extreme tele. Indoors in close quarters the 20-40 range is just about pefectand since it is fairly bright, it does a nice job.

If I need wider and light is not an issue, Ithrow in the 11-18mm KM. Just wish that lens was brighter but I guess you can't have everything. Great outdoor landscape lens if you don't mind the altered perspective of a superwide. For mid range stuff when I only want to use one lens I go with the KM 28-75 2.8.

I do have lots of other glass including some primes and sometimes it is tough deciding what to bring. but that should be my worst life dilema. Unlike most lens addicts, I use most of what I own but yes some get less use than others. The exception to that is the 18-70 kit lens. I own three of them, since they came with the the bodies but I never use them. The first one I tried had way too much distortion at the wide end. I would get rid of them but it almost doesn't seem worth the effort since they don't fetch much on EBay.

All this talk about lenses reminds me... I need a lens fix real bad since it's been months since I have even toyed with the idea of adding another lens to my line-up. I would love to add that new 18-250mm Tamron to my collection as the ultimate sunny day walk around lens... but it's against my principals and judgement to pay full retail for a lens or camera or anything else for thatmatter no matter how bad I want it. That lens is way too much money for what it is especially since it is fairly useless at indoor event without additional lighting. Would love to glue one onto the end of a 5D or even an A100 as it would make a great mock ultrazoom digicamcamera and virtually dustfree.
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Old Jun 20, 2007, 12:30 PM   #10
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Compromise and split the difference between a lens starting out at 20mm (like the Tamron 20-40mm 2.7-3.5) and 28mm (your existing Minolta 28-105mm).

Get a Minolta or Sony 24-105mm f/3.5-4.5 or a Minolta 24-85mm f/3.5-4.5 instead.

I've got the same Tamron two lens combo that Meanstreak mentioned (Tamron SP 20-40mm f/2.7-3.5, SP 35-105mm f/2.8 , as well as a Minolta 24-85mm f/3.5-4.5. That should be a more popular combo should a camera using a larger than APS-C size sensor be produced later.

I use the Minolta 24-85mm f/3.5-4.5 more. lol Any choice is a compromise (size, weight, focal range, optical quality, brightness, AF speed, etc.). I've got an 18-70mm kit lens, too (if size/weight and the few extra mm on the wide end is a big issue). But, I rarely use it and it wouldn't be compatible with 35mm film cameras or dSLR models with sensors larger than APS-C.

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