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View Poll Results: What lens would you buy in my place?
FA 50/1.4 13257.14%
DA 40/2.8 7331.60%
Neither - please explain in detail 2611.26%
Voters: 231. You may not vote on this poll

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06-20-2007, 04:44 PM   #16
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I also would go for the FA35mm F2. It's better for indoors because you don't have much space.

06-21-2007, 03:02 AM   #17
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I'd chose the FA 1.4/50 from those 2 lenses.
For low light you get more f-stops
- and it's a fine portrait-lens too (nice bokeh, not too sharp/contrasty wide opended but getting very sharp from 2.8 on)

As for you general purpose of a low-light-prime I'd also recommend a shorter focal length.
Depends on your findings and needs if you prefer a Sigma (1.8/28 or 1.4/30) or a Pentax lens (2/35).
As for the Pentax 2/35:
The 3 different versions (M, A, FA) are optically different!
I wasn't that satisfied with the M (my old Porst 1.8/35 was sharper!) but the A-version is much better! I still have and love this lens!

:-) Paul
06-21-2007, 03:47 AM   #18
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QuoteOriginally posted by Jonas B Quote
None of them. Get a feeling for what FOV you need and then buy either the Sigma 30/1.4, the FA35/2 or the FA43/1.9.
I second the recommendation for the Sigma. I had it in Canon EOS mount, and it was very good; in fact, I will probably get one in Pentax mount too. I replaced it with a Canon 35L, but only because I got a 5D and the Sigma is for crop sensors only. The 35L certainly isn't 3x better, despite the price. I think the corner softness issue is overplayed, especially if you shoot a lot a f/2.0 or faster, as I did with the lens. Plus, you shouldn't have any of the front-focus problems in Pentax mount, as it doesn't haven a built-in motor or AF electronics like in Canon mount.
07-02-2007, 01:20 AM   #19
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the 50/1.4 is excellent! i voted for it!

then i read your request: well, i got me the smc-f 28/2.8 and the sigma ex lens (24-70/2.8) for these indoor-purposes. they are a bit wider which is essential indoors... and the sigma is a bit on the hefty/heavy side - but looks realy good
;-)
p.s.: OTOH, many of us just love the tamron 28-75/f 2.8

07-02-2007, 02:48 PM   #20
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Would the FA 50/1.4 do as a portrait lens?

Like the original poster, I have the DA 18-55mm f/3.5-5.6 AL "kit" and the DA 50-200mm f/4.0-5.6 ED telezoom lenses. I also have the AF 28-105mm f/4.0-5.6 IF (non-AL) lens as well.

Would the FA 50mm f/1.4 be a good "portrait" and "open area" lens? Or are some of the zooms I have just fine around 50mm (with the added flexibility) do me just fine in IQ-wise -- sans, of course, being too slow for lower light?

I have a feeling I could put that money towards the FA 35mm f/2.0 instead if I want lower-light performance, or I should just get a DA 16-45mm f/4.0 or the future DA 17-70mm f/X (yes, I'm willing to wait until 2008, I just don't like the Sigma 17-70mm).

I just have the K100D, so cost is alway a consideration, and I'm trying to avoid LBA as much as I can.
07-05-2007, 09:47 AM   #21
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50mm

Its faster F1.4vF2.8, works on FF/film, cheaper, overall its a proven design tat will keep kicking for years to come.
If you want size over speed, than the 40mm, but I still prefer the 50
07-05-2007, 10:12 PM   #22
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Tough choice there...

It is two very different lenses... I used to own the 50... but after reacquiring the FA43 it has seen no use at all and ended up being sold in here...

So my choice would be the FA43ltd.

That said it is not what I consider a good indoor lens, either the FA35, FA31ltd or FA28 would be a lot better for that, depending on room size that is.

In that range the FA31ltd would be my choice... long story but I consider it the better lens.

I have recently bought the DA40ltd and it lives on a DS that my better half uses and she likes it a lot, it is too small for me and not really a match rendering wise to the FA43ltd, but then again I would have a really hard time finding any lens being that in the pentax lineup.

The FA50 and DA40 are both excellent lenses and both would handle OK in lowish light. if we are talking very low light the FA50 has a 2 stop advantage and that means something.

Well guess my answer turns out to be clear as mud, but it really comes down to what is right for you... go try them out and pick the one you like the best
07-05-2007, 10:21 PM   #23
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QuoteOriginally posted by BrendanPK Quote
Its faster F1.4vF2.8,
True

QuoteQuote:
works on FF/film,
The DA 40 works on FF and cropped digital cameras

QuoteQuote:
cheaper,
Not in Canada

QuoteQuote:
overall its a proven design tat will keep kicking for years to come.
The DA 40 design is based on the M40 design, and has been around longer than the FA50.

Chris

07-06-2007, 08:32 AM   #24
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This is what I would do....

get a pencil and a peice of paper and check out on your exif tags the focal length you use the most, that should give you a good indication which focal length would suit your needs.
also remember there is a secondary benifit to buying the fastest lens possible....
for example if the widest F stop is 1.4 then around F 2.8 will be sharp, and if you buy a lens at 2.8 you won't start to see the max sharpness until around 4.5-5.6 range. this makes a huge difference for indoor low light shots.
also, you will be able get hand held shots with a smaller F stop with a 1.4 as opposed to a 2.8
example if you take a shot of a flower close up you need the smallest apeture possible to get sharpness of the flower from on pedal to the next (example F8) the shutter speed at F8 could be hand held with the lens that has 1.4 and might need a tripod for the lens that has 2.8 max apeture.

hope this all makes sense as it was hard to get the point on paper

cheers and good luck on your purchase
BTW in my opinion I would go for a lens of at least F2.0.... you would be amazed on how lower light will improve ALL of you photography

cheers

randy
07-06-2007, 09:33 AM   #25
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"if the widest F stop is 1.4 then around F 2.8 will be sharp, and if you buy a lens at 2.8 you won't start to see the max sharpness until around 4.5-5.6 range" -slipchuck


slipchuck,

I used to think the same way, until I compared my FA 50/1.4 directly to my DA 40/2.8 (maybe to help me figure out why I bought two lenses with focal lengths so close to each other ;-). The 50 does sharpen up a LOT between 1.4 and 2.8, but the DA40 still holds it own wide open (at 2.8) with the FA50 stopped down to 2.8. I was pleasantly surprised to discover this. Maybe it's a 'Limited' thing.

-dak
07-06-2007, 09:42 AM   #26
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QuoteOriginally posted by wildboar Quote
"if the widest F stop is 1.4 then around F 2.8 will be sharp, and if you buy a lens at 2.8 you won't start to see the max sharpness until around 4.5-5.6 range" -slipchuck


slipchuck,

I used to think the same way, until I compared my FA 50/1.4 directly to my DA 40/2.8 (maybe to help me figure out why I bought two lenses with focal lengths so close to each other ;-). The 50 does sharpen up a LOT between 1.4 and 2.8, but the DA40 still holds it own wide open (at 2.8) with the FA50 stopped down to 2.8. I was pleasantly surprised to discover this. Maybe it's a 'Limited' thing.

-dak
Thank you for rectifing this.
I guess I should have stated "if both lenses are of the same capability as far as sharpness"
thanks again

randy
07-06-2007, 09:56 AM   #27
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In full disclosure I should also add... I couldn't decide which one to keep, so I kept them both! Neither one is the 'perfect' lens, but I can guarantee you that I now have the 40-50mm range covered without any doubts in quality.
07-06-2007, 03:11 PM   #28
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Original Poster
I'm afraid...

...none of those will do.
I went to a science conference and most of the pics I took were closeups of people explaining. I used DA 50-200 and more towards 200mm than towards 50mm.
It seems that I do not need 50mm lens, but 100mm or more.

On the other hand, when I tried to take a pic of the room, I ended up using 18-55 on the wide end.
Which points towards DA*16-50 (or wider) and either 50-135, or DFA 100mm, or some future yet unnamed lens. It seems that I will have to sell some organs to fund this...
BTW, I am aware that eventually I will need ~50mm lens, but not now.

And I found out that speed is what matters most...after image quality of course

Thanx again for all your answers.

Branimir
07-06-2007, 04:35 PM   #29
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QuoteOriginally posted by wildboar Quote
In full disclosure I should also add... I couldn't decide which one to keep, so I kept them both! Neither one is the 'perfect' lens, but I can guarantee you that I now have the 40-50mm range covered without any doubts in quality.
That sounds so familiar. I purchased a DA40 and a A 501.4, both used, from the same seller (apparently others have this same problem). I justified the purchase as both used lenses cost less than a new FA50 1.4 or DA 40. I use the DA40 most of the time, but I like the 1.4 for low light. The A 501.4 was at least partly a nostalgia purchase, as my first 35mm lens was a Canon FD 50mm 1.4, so I new I wanted another 'fast 50'.

Chris
07-06-2007, 05:16 PM   #30
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Zenitar FE 16mm f/2.8

QuoteOriginally posted by Branimir Quote
On the other hand, when I tried to take a pic of the room, I ended up using 18-55 on the wide end.
Which points towards DA*16-50 (or wider)
Not to interject a near-tangent but I recommend the Zenitar FE 16mm f/2.8 which you can find on eBay for $125.
On an APS-C sized sensor, like the K10D, K100D and others, the distortion is not poor at all, and it will give you 105-110 degrees FOV (equivalent to a 10-12mm non-FE).
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