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Forum: Pentax K-5 & K-5 II 01-29-2019, 04:48 PM  
Post Your K5IIs Pictures Here!
Posted By jco
Replies: 2,869
Views: 490,212
shot with K5IIs and smcK18mm/3.5
Forum: Pentax Forums Giveaways 07-30-2018, 10:00 AM  
July Pentax K-1 Giveaway: Raffle Thread 3, 17:00 UTC, July 30, 2018
Posted By jco
Replies: 75
Views: 5,276
I;m in this time
Forum: Pentax SLR Lens Discussion 07-29-2018, 07:47 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
I have the early version also. Thanks for taking/posting the photos.
Forum: Pentax SLR Lens Discussion 07-29-2018, 06:31 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
All your K18/3.5 shots look pretty good to me. Why did you use SR=20 instead of 18? Does your K18/3.5 lens say "18" or"18mm" on the front ring?
Forum: Pentax SLR Lens Discussion 07-28-2018, 10:49 AM  
The one lens that you just ended up never getting
Posted By jco
Replies: 107
Views: 7,585
well, I got mine a dozen years ago in a big package deal and it wasn't described well, you
kinda had to read between the lines and blowup poor ebay images to figure out it was part
of the deal. That's why it went for the price it did. I got lucky.
Forum: Pentax SLR Lens Discussion 07-28-2018, 08:55 AM  
The one lens that you just ended up never getting
Posted By jco
Replies: 107
Views: 7,585
The K28/3.5 is so great overall performer, I seriously doubt the sigma, or any 1.4 design is going to beat it at F8.
Flare would be the F1.4's enemy.
Forum: Pentax SLR Lens Discussion 07-28-2018, 07:52 AM  
The one lens that you just ended up never getting
Posted By jco
Replies: 107
Views: 7,585
about ten years agp I bought a K50/1.2 mint in the box for $325. Its in such nice shape Im afraid to use it. So I cant tell you if its worth the money or not. Mine is in the box, and the box is probably just collecting dust.
At that time the A50/1.2 lenses were going for around $400, now there around $700, That's another lens I lust after but its out of reach probably for good.
Forum: Pentax SLR Lens Discussion 07-28-2018, 07:02 AM  
The one lens that you just ended up never getting
Posted By jco
Replies: 107
Views: 7,585
Which lens or lenses have I always wanted but never managed to acquire? There are many.
A series lenses. SMCA 100mm/2.8 Macro, 85mm/1.4 135mm/1.8, the K series 500mm,
1000mm, and 135-600mm lenses. (I have these only in takumars).

BUT, I already own many great lenses, I really don't need any more, what
I really want is a K-1 mark II BODY. I just have too many bills to pay at the
moment to buy one. Boo.
Forum: Pentax SLR Lens Discussion 07-28-2018, 06:06 AM  
The one lens that you just ended up never getting
Posted By jco
Replies: 107
Views: 7,585
got one in mint condish in a package deal for a net cost of about $300.
killer lens

---------- Post added 07-28-2018 at 09:10 AM ----------




I bought one about 10 years ago. sharpest tele lens ive ever owned. Cant remember

what I paid for it, probably around $500

---------- Post added 07-28-2018 at 09:20 AM ----------


I currently have a mint SMC A15/3.5 and I got it cheap. I remember because I already had the takumar 15/3.5 which was expensive like $900 when I bought that in
the eighties, but I later sold it to a collector for $1700 around 2010 so it all worked out fine.

---------- Post added 07-28-2018 at 09:30 AM ----------



because the SMCK 28/3.5 is a spectacular lens, one of pentax best ever, and better performer than the m version. and its worth todays price imho.
Forum: Pentax SLR Lens Discussion 07-28-2018, 04:05 AM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
Note - I have and mentioned the K20/4 which is generally accepted as superior optically to both the M20/4 and the K18/3.5, but then again
its not as wide, slower, and doesn't have filters built in.
Forum: Pentax SLR Lens Discussion 07-28-2018, 02:31 AM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
I once owned both the RMC tokina 17mm F3.5 and the smcA 20 f2.8. Never used them of full frame digital, but on crop sensors at least neither one was as sharp or

contrasty as the SMCK 18mm or the SMCK 20mm/4 lenses, they both had superior resistance to flare than the tokina too.

---------- Post added 07-28-2018 at 05:34 AM ----------



and when it comes to build quality, you don't want to compare anything to a K series lens, forgetaboutit.

---------- Post added 07-28-2018 at 05:47 AM ----------


I also have the smcK 17mm/f4 fisheye but rarely use it because on a crop camera, it just looks like a bad distortion wide angle. I much prefer using my 15mm or18mm non fisheye lenses.
Now if I were using a K-1. it might be a different story.
Forum: Pentax SLR Lens Discussion 07-27-2018, 09:33 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
Thanks

---------- Post added 07-28-2018 at 12:44 AM ----------



was this finding on film, crop digital, or full frame digital?
Forum: Pentax SLR Lens Discussion 07-27-2018, 09:24 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
That seems pretty sharp even two thirds of the way out on the subject. And yes I can tell you focused on the close foreground putting all the background slightly out of focus.
Forum: Pentax SLR Lens Discussion 07-27-2018, 08:52 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
oh, yes, my copy has just a very little CA near the edges.
Forum: Pentax SLR Lens Discussion 07-27-2018, 08:30 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
That looks pretty bad. Was it shot wide open or what? While obviously not as wide, my copy looks much better at f8 on a crop sensor.
https://www.jchriso.com/temp/061814b.jpg

---------- Post added 07-27-2018 at 11:42 PM ----------


what is "pf"?
Forum: Troubleshooting and Beginner Help 07-27-2018, 05:44 PM  
K-5 IIs wont flash sync faster than 1/40s in M mode
Posted By jco
Replies: 17
Views: 1,154
yeah, getting blank pictures on X setting is unacceptable. Ive triple checked all the settings and there simply must be some sort of defect.
Forum: Pentax SLR Lens Discussion 07-27-2018, 04:59 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
Too bad they don't make a D FA 18mm prime. that would be nice.
Forum: Troubleshooting and Beginner Help 07-27-2018, 04:55 PM  
K-5 IIs wont flash sync faster than 1/40s in M mode
Posted By jco
Replies: 17
Views: 1,154
are you saying you never used just the built in flash with k lenses at 1/180s?
Forum: Pentax SLR Lens Discussion 07-27-2018, 04:50 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
I really like it on digital so far, but I only have a crop sensor istDS.
Forum: Pentax SLR Lens Discussion 07-27-2018, 04:02 PM  
SMCK 18mm f3.5 on K-1?
Posted By jco
Replies: 35
Views: 2,343
Has anyone tried using the vintage SMCK 18mm f3.5 lens in full frame mode on the K-1?
What were your general impressions and could you post some large sample images?
Thanks in advance.
Forum: Troubleshooting and Beginner Help 07-27-2018, 03:16 PM  
K-5 IIs wont flash sync faster than 1/40s in M mode
Posted By jco
Replies: 17
Views: 1,154
same lens syncs fine on an istDS

---------- Post added 07-27-2018 at 06:19 PM ----------



SMCK 28mm f3.5

---------- Post added 07-27-2018 at 06:21 PM ----------



already boxed it up for return to seller. didn't save files

---------- Post added 07-27-2018 at 06:25 PM ----------

Does anyone here have extensive experience shooting with the on camera flash on the K-5iis with K lenses in M or X modes?
Forum: Troubleshooting and Beginner Help 07-27-2018, 02:57 PM  
K-5 IIs wont flash sync faster than 1/40s in M mode
Posted By jco
Replies: 17
Views: 1,154
The K-5 IIs does have a X mode, where the speed is a constant 1/180s. I tried that too and the flash would not sync with a K lens, blank pictures on X mode.
Forum: Troubleshooting and Beginner Help 07-27-2018, 02:11 PM  
K-5 IIs wont flash sync faster than 1/40s in M mode
Posted By jco
Replies: 17
Views: 1,154
According to the manuals for both cameras, the K-5 IIs and the istDS should both operate the same way with flash using K lenses and manual flash.

---------- Post added 07-27-2018 at 05:18 PM ----------



This is incorrect, with K lenses, both the K-5 IIs and the istDS do NOT measure or meter the light output from the flash, instead, the flash just fires FULL OUTPUT MANUAL and the correct exposure
can only be obtained be setting the aperture value on the lens correctly. The key is that ANY shutter speed 1/180s or slower can be used. Im having problem from 1/45 to 1/180
Forum: Troubleshooting and Beginner Help 07-27-2018, 01:56 PM  
K-5 IIs wont flash sync faster than 1/40s in M mode
Posted By jco
Replies: 17
Views: 1,154
And secondly, I should make this clear, this is not an exposure problem, its a SYNC problem.

---------- Post added 07-27-2018 at 05:03 PM ----------



when you use a "K" lens, there is no TTL exposure or sync, the flash is supposed to fire full power manual at the rated sync speed of 1/180s regardless of lens aperture setting.
Forum: Troubleshooting and Beginner Help 07-27-2018, 01:53 PM  
K-5 IIs wont flash sync faster than 1/40s in M mode
Posted By jco
Replies: 17
Views: 1,154
Im not talking about using an old flash with the k-5 IIs, im talking about using its own BUILT IN FLASH.
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