Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-29-2016, 11:11 AM   #1
Veteran Member




Join Date: Sep 2010
Location: Oregon
Posts: 496
Does anyone have the manual for an FA 85mm Soft lens.

I would particularly like an online link to such a thing. I bought one recently and am baffled by how to use it with a flash. Perhaps I should use it with a TTL flash on my *ist-D rather than my K-5?

05-29-2016, 11:25 AM   #2
Otis Memorial Pentaxian
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 37,247
It may work with an analog TTL flash on the *ist-D, but I suspect your AF280T or AF540FGZ in auto mode may be your best option on the K-5. Either that or use full manual technique. The lens manual will likely be of little help.


Steve
05-29-2016, 11:30 AM   #3
Veteran Member




Join Date: Sep 2010
Location: Oregon
Posts: 496
Original Poster
I was hoping to understand how to use the onboard flash rather than an external flash. My goal is unstaged portraits so full manual is a problem. I'm struggling with focusing on eyes at the time of shutter press.
05-29-2016, 12:39 PM   #4
Otis Memorial Pentaxian
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 37,247
QuoteOriginally posted by aoeu Quote
I was hoping to understand how to use the onboard flash rather than an external flash. My goal is unstaged portraits so full manual is a problem. I'm struggling with focusing on eyes at the time of shutter press.
Thinking about this further, your use case is difficult regardless of flash used.
  • The lens is not easy for fine focus
  • The aperture is partially manual and is used mostly for effect
  • As a result neither P-TTL or auto flash will generally work
  • On-board manual flash will also not work
  • Small speedlight with many power settings might work, though not on the fly
  • Analog/digital TTL may work



Last edited by stevebrot; 05-29-2016 at 12:54 PM.
05-29-2016, 01:17 PM   #5
Moderator
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 7,224
May not mean anything:
K-7 and PENTAX Soft Focus Lenses | Ricoh Imaging Support

K-7 and PENTAX Soft Focus Lenses

Q: Can PENTAX soft focus lenses be used with the K-7?

A: Yes. The PENTAX 85mm f/2.8 FA or F series and 28mm f/2.8 FA series Soft Focus lenses can be used automatically, or with manual aperture control. If using automatically, Aperture value (Av) will be automatically selected in the following modes: P Sv Tv Av TAv If setting the aperture manually, then "Using Aperture Ring" must be set to "PERMITTED" in Custom Settings .

The 2002 SMC Pentax FA interchangeable lens operating manual in the built-in flash compatibility table (checking vignetting) lists the 28mm and 85mm soft focus lenses as compatible on the Z/PZ, MZ and MZ-S series film cameras. I believe these bodies had analog TTL for flash so at least that should work with these lenses.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&ved=0ahUKEw...5EsUDg&cad=rja

Last edited by Not a Number; 05-29-2016 at 01:28 PM.
05-29-2016, 01:53 PM   #6
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 49,600
TTL is needed if you want full automation with the on-board flash, so that would pretty much limit you to the *ist D. On newer cameras you might also be able to get away with using the manual flash power setting.

But auto flash with the external flashes mentioned may be a viable option. Assuming your lighting is constant, it shouldn't be too much of an inconvenience.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

05-29-2016, 02:04 PM   #7
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 16,209
Since it is an FA lens it should work with all your bodies, but perhaps because it is soft, the P-TTL gets confused. If that is the de, use the *istD and take the lens out of A which forces TTL over P-TTL
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!
fa 85mm, flash, k-mount, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Does the Pentax AF360FGZ II have an optical slave mode? sarge Flashes, Lighting, and Studio 5 03-10-2016 07:51 AM
Does anyone have just one lens? 6BQ5 Pentax SLR Lens Discussion 43 06-06-2015 05:22 PM
Does anyone have an tips for taking pics of Dark Birds? coreyhkh Photographic Technique 36 05-13-2012 02:20 PM
does anyone have an ICC camera profile for K-5? conradj Pentax K-5 9 09-26-2011 01:04 AM
Does anyone have or know where I can find a replacement PCB for the 540GZ Flash Christopher M.W.T Pentax DSLR Discussion 5 07-08-2010 07:29 PM



All times are GMT -7. The time now is 11:33 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