Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-15-2009, 10:29 AM   #1
Senior Member




Join Date: Sep 2009
Posts: 200
40mm DA vs 43mm FA

I know, the subject has been beaten to death, but I'm new so please forgive me
A lot of info is buried in many different threads... Anyway, what's the latest
about those two and K-7? I've seen many conflicting tests.
I feel like 40 DA is more consistent on K-7, but because it's quite slow
for a portrait lens, I should be getting both... But then 43 is apparently not
so great wide open? How quickly it's becoming decent? f2.2?
How about the OOF background, 43 supposed to be beautiful, but then again
some tests say it's quite harsh wide open where I'd be using it the most...

09-15-2009, 10:49 AM   #2
Veteran Member
netuser's Avatar

Join Date: Oct 2008
Location: Azores Islands, Portugal
Photos: Gallery
Posts: 2,241
In fact I could also use a test with both lens and k-7
09-15-2009, 10:53 AM   #3
Senior Member




Join Date: Feb 2007
Location: Michigan/USA
Posts: 173
Maybe I'm just lucky but my 43mm seems very sharp, even wide open. Maybe it's a center vs. edges thing, and it's not edge-to-edge sharp @ 1.9. For portraits, that's not really a problem though. If you wanted edge to edge sharp, I'd say somewhere between 2.8 and 4.0 would do it.

I don't have the 40mm, but what would appeal to me about that lens is how very small and non-instrusive it is, that little shade & lens cap, takes up almost no room at all.
09-15-2009, 01:42 PM   #4
Site Supporter
Site Supporter




Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 16,422
I don't know about the FA 43, but the DA 40 is a great lens. So small that you can shoot one handed easily, but very sharp. Very fast focusing. The only negative I can really think of is that it only opens up to f2.8. Not really a problem with portraits, unless you like the kind where only someone's left eye is in focus...

Attached Images
View Picture EXIF
PENTAX K10D  Photo 
09-15-2009, 07:11 PM   #5
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
QuoteOriginally posted by andi Quote
I feel like 40 DA is more consistent on K-7, but because it's quite slow
for a portrait lens, I should be getting both...
Portrait lens? I wouldn't be getting either of these for portraits specifically - not even close to long enough. I mean, sure, they won't stop working just because a person enters the frame. But if you're working on a formal portrait where you want shallower DOF than you get at f/2.8, you'd normally want a more closeup view than a 40 or 43 gives (unless you shot form what is normally considered an unflattering and uncomfortably close distance).

QuoteQuote:
How about the OOF background, 43 supposed to be beautiful, but then again
some tests say it's quite harsh wide open where I'd be using it the most...
That's because this is extremely subjective. Some tests say Pepsi is better than Coke, too...
09-15-2009, 07:19 PM   #6
Veteran Member




Join Date: Dec 2008
Location: NYC
Posts: 944
I am the biggest fan of the FA ltd's
and you cant really go wrong with any of the FA LTD's is a huge understatement.

these three is the reason to have a Pentax camera

BUT

in the case of the DA 40 , I would say get it. its the coolest prime available today from any brand. and it's very cheap. the IQ is fantastic as well.

if you can get both

as mark said thou both will be "normal" lenses and not ideal for portrait.
09-15-2009, 08:09 PM   #7
Senior Member




Join Date: Sep 2009
Posts: 200
Original Poster
Thank you guys! Well I really like the 70mm lens on FF for portraits and people.
I've been shooting with a long side of Canon 24-70L and prefer it to 85mm...
I'm getting a K-7 and a set of pancakes, my only concern was they were too slow.
70mm f2.8 on FF is shallower than 40mm f2.8 on a crop.
So for that reason only I consider getting a 43mm f1.9 too to replicate 70mm f2.8 on FF.
I will be getting a 70mm pancake also, so for the tighter frames I will be covered.
My main thing though is to stay small, I'm getting a Pentax system
to have a compact set instead of my Canon system when I don't want to drag
a heavy bag with me. I tried K-7 in a store a few days ago and really liked it.
But what brought me to Pentax were those sweet small pancakes...
09-15-2009, 10:21 PM   #8
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
OK, but do keep in mind that 43mm on APS-C is close, but still short of 70mm on FF, and 40mm is really quite short of it. A 50mm lens should probably be on the list for consideration, too.

09-16-2009, 04:22 AM   #9
Veteran Member
netuser's Avatar

Join Date: Oct 2008
Location: Azores Islands, Portugal
Photos: Gallery
Posts: 2,241
Can someone post an example same image taken with FA43 and DA40 ?
09-16-2009, 06:08 AM   #10
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,723
QuoteOriginally posted by andi Quote
Thank you guys! Well I really like the 70mm lens on FF for portraits and people.
I've been shooting with a long side of Canon 24-70L and prefer it to 85mm...
I'm getting a K-7 and a set of pancakes, my only concern was they were too slow.
70mm f2.8 on FF is shallower than 40mm f2.8 on a crop.
So for that reason only I consider getting a 43mm f1.9 too to replicate 70mm f2.8 on FF.
Is there some reason you aren't considering the FA 50mm f1.4? Pentax's 50mm 1.4 is usually considered the best of any of the manufacturers. On a 1.5 crop it's slightly closer to 70mm equivalent than the 43mm (75 vs 64.5) and is in the traditional portrait range, whereas the 43mm is a bit short. The 50 is faster than the others obviously, and with comparable sharpness according to Photozone (sharper than 40mm at F2.8, not as sharp as 43). Construction is a step below, but it's still a solid little chunk. I kind of like the retro look of the 50mm, especially with a rectangular hood.

Have a look at this thread for some discussion and samples.
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/24545-why-i-lo...mm-f1-4-a.html
09-16-2009, 07:31 AM   #11
Senior Member




Join Date: Sep 2009
Posts: 200
Original Poster
QuoteOriginally posted by audiobomber Quote
Is there some reason you aren't considering the FA 50mm f1.4?
I just want to stay with the smallest lenses available. If I decide to start buying
larger Pentax lenses, then I can as easily just take my Canon setup with me
and I have some really good lenses there
The combination of 15, 21, 40 and 70 DA limited fits me well, again one concern
I had they were too slow, specifically for portraits... 70 being longer seems OK,
wider ones don't need to be that fast, it's just 40 I guess. And because there is
another pancake option, I consider it.
Luckily also they are all 49mm filter size lenses, just one polarizer and I'm all set.
09-16-2009, 07:38 AM   #12
axl
Inactive Account




Join Date: Mar 2007
Location: Nove Zamky, Slovakia
Photos: Gallery | Albums
Posts: 7,181
I don'thave 43 but on APSC 40 is actually quite nnice lens for portraits. Especcialy if you like being closer to your "objecccts" and have contact with them. Sure, 50 is better for head shots, but for upper body/all body DA40 is great. It gave me some really nice results. And as general purpose lens it's absolutely fantastic IMHO.

BR
Peter
09-16-2009, 07:56 AM   #13
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,723
QuoteOriginally posted by andi Quote
I just want to stay with the smallest lenses available.
All three lenses are 49mm filter size. The FA 50mm is not a pancake, but it's tiny compared to the Canon 50mm f1.4. Still, a set of Limited pancakes is a pretty cool lens plan.
FA 50

FA 43 Ltd

FA 40mm

Last edited by audiobomber; 09-16-2009 at 10:08 AM.
09-16-2009, 08:49 AM   #14
Veteran Member
netuser's Avatar

Join Date: Oct 2008
Location: Azores Islands, Portugal
Photos: Gallery
Posts: 2,241
QuoteOriginally posted by netuser Quote
Can someone post an example same image taken with FA43 and DA40 ?
Just to be clear, I'm not talking about image from the lens itself
09-16-2009, 09:30 AM   #15
Pentaxian
audiobomber's Avatar

Join Date: May 2008
Location: Sudbury, Ontario
Photos: Albums
Posts: 6,723
QuoteOriginally posted by netuser Quote
Just to be clear, I'm not talking about image from the lens itself
LOL! I knew that.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
da, k-7, k-mount, pentax lens, slr lens, tests
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Has anyone compared Voigtländer 40mm and 43mm ltd? Ketsuppi11 Pentax SLR Lens Discussion 4 05-20-2010 11:45 PM
For Sale - Sold: FT: FA 43mm LTD Black, mint, for DA 40mm plympton Sold Items 1 06-13-2007 10:38 AM
Anyone own the 40mm and 43mm loganross Pentax SLR Lens Discussion 5 05-27-2007 10:50 PM



All times are GMT -7. The time now is 07:11 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top