Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
10-09-2013, 05:41 AM   #1
Pentaxian
fevbusch's Avatar

Join Date: Jan 2007
Location: Brooklyn, New York
Photos: Gallery | Albums
Posts: 1,070
Pentax SMC FA100mm f3.5 macro lens

I was thinking of getting a lens in the 100mm range to shoot landscapes, etc. .
I'm wondering how it would handle and autofocus on my K30 camera, considering that I now have all this high ISO.
The reviews I read are really pretty old so I'm wondering about this improving with a newer model like K30. It is an A lens. It seems to be a good buy at around $200.
Freddy

10-09-2013, 07:31 AM   #2
Loyal Site Supporter
Loyal Site Supporter
TER-OR's Avatar

Join Date: Apr 2009
Location: Dundee, IL
Photos: Gallery | Albums
Posts: 5,873
The FA100 is a great macro lens. I use it on my K5 all the time. It has a pretty tight field of view, though, so I'm not sure you'll get the best use at landscapes unless you're shooting at a distance. It does double as a competent telephoto, though the focus throw is big - as you would expect from a macro lens. It's an FA lens - fully automatic. It has an aperture ring so you can use it fully manual as well. It's FA, not DA so it is built for Full-frame.

If you can find one for $200 it's a great bargain. I bought mine for over $300 about 5 years ago. It's built like a tank, too...
10-09-2013, 07:51 AM   #3
Pentaxian
fevbusch's Avatar

Join Date: Jan 2007
Location: Brooklyn, New York
Photos: Gallery | Albums
Posts: 1,070
Original Poster
Pentax FA 100mm f3.5 lens

Thanks, Ter-Or. How far away would I hve to be from some beautiful fall foliage trees for the lens to work. Like a stand of about 5 trees wide.
I don't need the lens to be close. I just need to shoot things that are over 50 feet away. I don't mind shooting auto or manual for that. Freddy
10-09-2013, 08:32 AM   #4
Pentaxian




Join Date: Sep 2009
Location: Southern California
Photos: Gallery | Albums
Posts: 3,181
QuoteOriginally posted by TER-OR Quote
If you can find one for $200 it's a great bargain. I bought mine for over $300 about 5 years ago. It's built like a tank, too...
Are you sure you're talking about the same lens? The one based on the Cosina 100/3.5 AF macro? Because I have that one, and while it's a good lens, no one's ever accused it of being built like a tank!

10-09-2013, 09:06 AM   #5
Loyal Site Supporter
Loyal Site Supporter
TER-OR's Avatar

Join Date: Apr 2009
Location: Dundee, IL
Photos: Gallery | Albums
Posts: 5,873
Ah, you're right. I have the f2.8 lens.
SMC Pentax-FA 100mm F2.8 Macro Reviews - FA Prime Lenses - Pentax Lens Reviews & Lens Database

So I guess ignore everything I said, I have no experience with the f:3.5 version.
I need to pay closer attention!

At 50 feet the 100mm is probably pretty useful.
10-09-2013, 09:17 AM   #6
Pentaxian
fevbusch's Avatar

Join Date: Jan 2007
Location: Brooklyn, New York
Photos: Gallery | Albums
Posts: 1,070
Original Poster
Thanks, guys.
Yeah, I imagine I would be 50 to 100 feet away if I was shooting landscapes, so that would work.
If I were shooting landscapes closer than that I would be using my Da35mm 2.4 AL.
Freddy
10-09-2013, 10:23 PM   #7
Site Supporter
Site Supporter
jatrax's Avatar

Join Date: May 2010
Location: Oregon
Photos: Gallery | Albums
Posts: 10,829
FA 100 f/3.5 is a nice lens if you can get a good price. Had one and foolishly sold it on as I did not think I used it enough. Nice and light, works well but does not have the build quality of the f/2.8 models. Takes nice pictures though.

I now have the DFA 100 f/2.8 WR and I think it is superior in many ways but at a much higher price point of course.

According to this field of view calculator: http://www.tawbaware.com/maxlyons/calc.htm : A 100mm lens on APS-C sensor at 50 feet from the subject will give you a diagonal field of view of about 14 feet. So not what I would use for shooting trees that are say 75 feet tall.

Play around with the calculator and see what focal length works for what you have in mind. Or take a zoom out and frame your target and then note the focal length.
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!
k-mount, k30, lens, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Pentax FA100mm f/3.5 Macro 1:2 tcbubbleleo Sold Items 3 03-16-2013 03:51 PM
Understanding the controls on Pentax FA100mm f2.8 Macro lens vass Pentax SLR Lens Discussion 18 01-07-2013 03:16 PM
For Sale - Sold: Pentax K10D with 18-55mm F3.5-5.6 lens and Pentax-DA-21mm F3.2 Limited Lens k9lover Sold Items 12 11-19-2012 12:51 PM
For Sale - Sold: Pentax SMC-M 50mm F2.0, SMC-DA 18-55mm F3.5-5.6 II, SMC-DA 18-55mm F3.5-5.6 davidreilly3207 Sold Items 3 12-26-2011 07:59 AM
For Sale - Sold: SMC Pentax-F 35-70mm F3.5-4.5;SMC Pentax-A 50mm F2;SMC Pentax-DA L 18-55mm F3. TATA Sold Items 14 06-17-2010 04:05 PM



All times are GMT -7. The time now is 02:37 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