Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-11-2012, 02:14 PM   #1
New Member




Join Date: Jan 2012
Posts: 17
Using manual glass

Im having a great time with this camera, but im still confused on how I should be properly using my manual lenses. Ive mainly been using M mode & Av mode and Im getting good results. Im just confused on what I should be doing with my aperture ring. Do I adjust it at all, or let the camera do the work? I haven't had enough testing time to figure out if going up or down even makes a difference.

I read that M mode wont hold the lens at wide open, but It always seems like the lens is wide open.

12-11-2012, 02:28 PM   #2
Site Supporter
cali92rs's Avatar

Join Date: May 2011
Location: Long Beach, CA
Posts: 3,203
Which type of lens are you using? Some lenses you have to use the aperture ring to adjust aperture (M42, K, M) while some lenses you can do on camera (A, F, FA, DA lenses).
This article will get you started:
https://www.pentaxforums.com/forums/pentax-lens-articles/110657-how-use-meter...k-x-k-7-a.html
12-11-2012, 02:38 PM   #3
Loyal Site Supporter
THoog's Avatar

Join Date: Aug 2012
Location: North Carolina
Photos: Gallery | Albums
Posts: 3,401
+1 on the article, with one amendment: M (manual) mode will behave differently on the K-01 depending on whether you have AutoISO turned on or not. For it to act exactly like the article, you need to manually select an ISO.

To address the OP's last item, with a K/M lens, M mode and manual ISO, the lens will be wide open until you meter using the green button (this is provide enough light for focusing). It will stop down to meter, then open up again until you fire the shutter.

Hope this helps!
12-11-2012, 02:54 PM   #4
New Member




Join Date: Nov 2012
Posts: 14
Remember, if there is no A mode on the lens aperture ring, you must select the aperture using the aperture ring. Remember to allow the use of "lens with an aperture ring" custom setting in the menu. Use M mode and fixed iso. When you want the camera to figure out an appropriate shutter speed for the aperture you selected on the lens, press the green button. Myself had trouble getting it to work, and the problem was I had autoiso set which does not work. If you use m42 via adapter it is Easy, just use av mode and set aperture on the lens.

12-11-2012, 02:58 PM   #5
New Member




Join Date: Nov 2012
Posts: 14
THoog was faster than me....
12-11-2012, 04:57 PM   #6
New Member




Join Date: Jan 2012
Posts: 17
Original Poster
im using all k mount bayonet lenses

SMC Pentax-M 1.4 50mm
SMC Pentax-M 2.8 28mm
Asahi Takumar 2.5 135mm
Vivitar 2.8-4.0 70-210mm

I dont know if im doing something wrong, but in M mode, the screen still says Av(aperture priority, automatic exposure). switching between AV TV or M doesnt change anything.

here are some totally random shots I took with most of the lenses. i seem to be getting decent results, but i still think im doing something wrong.






Last edited by AntonV; 12-11-2012 at 05:09 PM.
12-11-2012, 05:37 PM   #7
Loyal Site Supporter
THoog's Avatar

Join Date: Aug 2012
Location: North Carolina
Photos: Gallery | Albums
Posts: 3,401
Check your ISO - I think it's set to Auto. If it is, Av will show in the corner (and ISO AUTO at the bottom), the lens will be held wide open, and even though you hit the Green Button, you won't hear it stop down to meter. Once you select an ISO, the Av in the corner will change to M.
12-11-2012, 05:53 PM   #8
New Member




Join Date: Jan 2012
Posts: 17
Original Poster
yep, that worked. i like auto mode better, lol

12-11-2012, 06:16 PM - 1 Like   #9
Loyal Site Supporter
THoog's Avatar

Join Date: Aug 2012
Location: North Carolina
Photos: Gallery | Albums
Posts: 3,401
The problem with M+AutoISO (also known as "TAv mode") is that it ignores the aperture ring setting and holds the lens wide open, which can give you soft pictures or very thin depth of field. If you want to use TAv with a K/M lens, you can put a bit of tape on the lens mount so that it treats the lens like an M42. I've done this with a couple of my 'walking around' lenses, so that I can set the aperture and it continously gives me a usable ISO and shutter speed without using the Green Button.

Making an M lens automatic, sort of. on Flickr
12-11-2012, 11:42 PM   #10
Forum Member
BerndM's Avatar

Join Date: Jul 2012
Location: Placentia, California
Posts: 82
Hey Anton V
I hope it's not just me, but I saw absolutely NOTHING in ANY of the above pictures that is in sharp focus.
I am expecting my K-01 to be delivered tomorrow (12/12) so I can't offer any suggestions yet. other than reporting what I'm seeing.
Hopefully just a minor setting error (I hope) and not an issue with your camera.
Regards
Bernd
12-12-2012, 04:08 AM   #11
New Member




Join Date: Nov 2012
Posts: 14
Just tested the tape-trick, works perfect. My m-lenses works much easier now when I don,t need the Green button.

Tanks for the tip THoog
12-12-2012, 09:40 AM   #12
New Member




Join Date: Jan 2012
Posts: 17
Original Poster
QuoteOriginally posted by BerndM Quote
Hey Anton V
I hope it's not just me, but I saw absolutely NOTHING in ANY of the above pictures that is in sharp focus.
I am expecting my K-01 to be delivered tomorrow (12/12) so I can't offer any suggestions yet. other than reporting what I'm seeing.
Hopefully just a minor setting error (I hope) and not an issue with your camera.
Regards
Bernd
I think its photobuckets conversion. they all are very sharp in raw & jpg, except for the pic of my chihuahua, thats definitely a soft pic.
12-14-2012, 01:40 PM   #13
Veteran Member
kcobain1992's Avatar

Join Date: Dec 2010
Location: Bucharest, Romania
Photos: Gallery
Posts: 1,409
I don't think they're very sharp, either. Not to be misinterpreted, but the lenses you have are capable of infinitely better photos. There's no use in believing your photos are good the way they are, because honestly they aren't. You can get much better quality out of a phone camera.
I'd suggest you take some time and learn about the effect of the lens aperture on a photo, and then use your newly acquired knowledge. Good luck!
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, im, k-01, k01, lens, mirrorless, mode, pentax k-01, time
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Using manual focus lens KimM Pentax SLR Lens Discussion 8 06-06-2012 07:38 AM
issues using manual lens Andrew Crouch Pentax K-5 19 03-01-2012 08:53 AM
Using flash with manual lens dmeadows85 Flashes, Lighting, and Studio 7 01-28-2012 08:03 PM
using manual lens on K2000 pano1 Troubleshooting and Beginner Help 8 03-29-2011 04:32 AM
Using old Minolta glass sabarrett General Talk 3 02-26-2009 08:07 AM



All times are GMT -7. The time now is 08:45 AM. | 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