Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-20-2013, 11:41 AM   #1
New Member




Join Date: Sep 2013
Posts: 8
Pentax K10d with manual 105 macro lens

I have a pentax ish camera that I leave my 105 1:1 MACRO lens with ring flash on. I take a lot of flower pictures especially wild orchids, some are tiny. This lens and camera takes beautiful pictures.

I just got a used K10d camera, learning to use it. It didn't come with a manual, so I'm reading info online, not the best way to do it. My question is: I put the macro lens and ring flash on this camera today and took some pictures, they all came out blasted!! I did the +/- and used small f/stops but they were awful! With the tripod set up on the same flowers, I switched back to my ish camera and they were beautiful.

Is there some reason that my old Vivitar 105 manual macro won't work with the K10D? I've had the macro lens for 15 years or so, I love it with the ring flash.

09-20-2013, 12:08 PM   #2
Loyal Site Supporter
paulh's Avatar

Join Date: Sep 2010
Location: DFW Texas
Photos: Gallery | Albums
Posts: 12,470
The *istD supports TTL flash - the K10D (and most other Pentax DSLRs) does not. Assuming your flash was using the TTL setting, it won't work that way on the K10D. You should look up the owners manual for your flash, and possibly experiment with manual mode (if the flash supports it). Hopefully someone more knowledgeable than myself will chime in to help you.
09-20-2013, 12:12 PM   #3
Inactive Account




Join Date: Dec 2008
Location: North Carolina
Photos: Albums
Posts: 1,720
Does your lens have an A position on the aperture ring? If it does, you should leave it in A and control the aperture from the body, it will work in all metering modes. If it does not have an A position you will only be able to use it in M mode and set the aperture with the ring, if you try to use a non-A lens with Av or other modes the aperture will stay wide open.
09-20-2013, 12:14 PM   #4
Pentaxian
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 3,899
The Pentax K10D does not support the older flash TTL system. You will need to shoot in Av or X mode setting the aperture yourself. If your flash has an auto-sensor change the flash to that mode and set the recommended aperture from the flash. This is just a starting point since the auto-sensor is typically set on the flash power unit and receives almost no reflected light from a subject close to the lens. From there you can open or close the aperture based on what you see in the preview (bracket like hell as the saying goes). In time you develop a feel for how the flash responds to the background. I recommend shooting in RAW mode which gives you more latitude in post-processing adjustment of your images.

If your flash does not have an auto-sensor it may have a full manual mode with variable power. You'll have to look up the Guide Number for your flash and do some math to find starting points for aperture settings. If the flash does not have variable power you'll have to resort to using Neutral Density filters.

I have a Lester Dine (Kiron) 105mm f/2.8 macro with a Lester Dine (Yuzo) ring flash and a K10D. Many shots I take are with this combo. The flash has a Pentax TTL module but as noted before the K10D (and later DSLRs) does not support the old TTL system.

Note the Yuzo has a third position for 1/16th power on the TTL/Auto selector switch. This is to the left of the TTL position is blocked off by plate/label that Lester Dine has on the flash. You could probably cut away a portion of the plate to expose this position - I haven't done so.

Many forum members recommend the Sunpak DX-8R ring flash which has an auto-sensor and manual control with variable power. You can find this used at reasonable prices. Just about any of the dedicated modules will work however you will either have to shoot in manual or X mode to set the flash sync speed.

09-20-2013, 01:10 PM   #5
Senior Member
Action Jackson's Avatar

Join Date: Jun 2011
Location: Markham, Ontario, CANADA
Posts: 243
Try setting your aperture to a higher value relative to your flash.
09-20-2013, 06:34 PM   #6
New Member




Join Date: Sep 2013
Posts: 8
Original Poster
QuoteOriginally posted by Not a Number Quote
The Pentax K10D does not support the older flash TTL system. You will need to shoot in Av or X mode setting the aperture yourself. If your flash has an auto-sensor change the flash to that mode and set the recommended aperture from the flash. This is just a starting point since the auto-sensor is typically set on the flash power unit and receives almost no reflected light from a subject close to the lens. From there you can open or close the aperture based on what you see in the preview (bracket like hell as the saying goes). In time you develop a feel for how the flash responds to the background. I recommend shooting in RAW mode which gives you more latitude in post-processing adjustment of your images.

If your flash does not have an auto-sensor it may have a full manual mode with variable power. You'll have to look up the Guide Number for your flash and do some math to find starting points for aperture settings. If the flash does not have variable power you'll have to resort to using Neutral Density filters.

I have a Lester Dine (Kiron) 105mm f/2.8 macro with a Lester Dine (Yuzo) ring flash and a K10D. Many shots I take are with this combo. The flash has a Pentax TTL module but as noted before the K10D (and later DSLRs) does not support the old TTL system.

Note the Yuzo has a third position for 1/16th power on the TTL/Auto selector switch. This is to the left of the TTL position is blocked off by plate/label that Lester Dine has on the flash. You could probably cut away a portion of the plate to expose this position - I haven't done so.

Many forum members recommend the Sunpak DX-8R ring flash which has an auto-sensor and manual control with variable power. You can find this used at reasonable prices. Just about any of the dedicated modules will work however you will either have to shoot in manual or X mode to set the flash sync speed.
Thank you, sounds like the TTL that works great on the ish D just doesn't work with the K10d. I've always used the "A" and set the f/stops, I've gotten so I don't need to look up the guide #s anymore. My flash does have 1/2 stop etc. I've just used the auto. So that is something to try and try using Neutral Density filters. What is x mode? I use AV.

Does anyone know where I can find a printed manual for this camera?
09-20-2013, 07:03 PM   #7
Pentaxian
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 3,899
In English:
http://www.ricoh-imaging.co.jp/english/support/man-pdf/k100d.pdf

Other languages should be available on the regional websites.

X mode sets the flash sync speed for the shutter (1/180s). Use this with non-dedicated flash units or M mode (set to 1/180s or slower). With "A" type lenses you can set the aperture with the eDial. With non-A lenses (or off the "A" mode) you adjust the aperture with the ring on the lens.

The flash you have should set the sync speed when the flash is turned on. You should be able to leave the lens in "A" mode and set the aperture to what is appropriate for the flash power settings. What flash unit do you have?
09-20-2013, 07:43 PM   #8
New Member




Join Date: Sep 2013
Posts: 8
Original Poster
It's an old Pentax AF080C ring flash. I LOVE it! But not with the K10d.

09-21-2013, 01:37 AM   #9
Pentaxian
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 3,899
The manual has charts for using the flash in manual mode (page 18-19)
http://c758710.r10.cf2.rackcdn.com/files/support/manual/87_1314744912-901461230_manual.pdf

Here's a better copy:
http://www.cameramanuals.org/flashes_meters/pentax_af080c.pdf

Last edited by Not a Number; 09-21-2013 at 01:43 AM.
09-21-2013, 11:43 AM   #10
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 26,227
Well, there you go! You have the camera manual and the flash manual. Between the two you should do fine.


Steve
09-22-2013, 12:19 PM   #11
New Member




Join Date: Sep 2013
Posts: 8
Original Poster
Well I just took the camera out, put it on a tri pod and took a lot different setting of marigold. Not a favorite flower but it's blooming in the garden so that's what I took.

When I put the camera on "A" and X, turned my flash down to 1/4 power at f/11 with sun they were very nice! Same at f/16 were a little dark but edit fixed them to very nice. I tried the Program setting & green button with no flash, interesting. Also took the same flowers with out flash so I could get a good test.

Thanks again all the great info on this forum!!
09-22-2013, 12:31 PM   #12
Pentaxian
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 3,899
Great to hear that. That's what you have to do, pick up the camera and start taking shots. After a short while it should become second nature and you'll know what aperture to star at. TTL ring flash photography as difficult to match but you can still achieve stunning results with manual flash.

Share some photos with us if you please.

There are DIY options for P-TTL macro flash using the on-board flash:

https://www.pentaxforums.com/forums/pentax-flashes-lighting-technique/146183-...cro-flash.html
https://www.pentaxforums.com/forums/post-your-photos/151708-misc-few-diy-macr...-diffuser.html
https://www.pentaxforums.com/forums/photographic-technique/76001-diy-pttl-macro-flash.html
https://www.pentaxforums.com/forums/pentax-flashes-lighting-technique/34400-d...ble-fring.html

I use the first method and it works great, however you won't get the even flat lighting that you do with a ring. See the last link for that.

Last edited by Not a Number; 09-23-2013 at 08:38 AM.
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!
camera, flash, ish, k10d, lens, macro, pentax, pentax help, pentax k10d, pictures
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tokina 35-105 f3.5 Close Focus ( manual lens ) old4570 Lens Sample Photo Archive 2 07-28-2013 06:55 AM
Wanted - Acquired: Tamron 90mm macro / Sigma 105 ex dg macro / Pentax 100mm macro pentakxian Sold Items 6 05-31-2013 09:58 AM
Help with lens compatability k10d Vivitar Series 1 28-105 tmacdon Pentax SLR Lens Discussion 25 10-10-2009 10:12 PM
HELP! manual lens problems with K10d jster91 Pentax SLR Lens Discussion 13 04-14-2008 03:41 PM



All times are GMT -7. The time now is 03:18 PM. | See also: NikonForums.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