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Forum: Pentax SLR Lens Discussion 02-26-2020, 11:53 AM  
Meyer-Optik Gorlitz Trioplan 100mm f/2.8 II for K-mount and M42
Posted By Billy Joe
Replies: 33
Views: 1,457
Been years since I actually used it.. took it out today
Forum: Lens Clubs 02-24-2020, 11:21 PM  
HD Pentax-D FA* 1:1.4 50mm SDM AW
Posted By cooks333
Replies: 164
Views: 24,204
Spring wildflowers are starting to pop up here in the Phoenix area. Great opportunity to get some sweet, sweet bokeh.



I'm also trying to make a point of using the 50mm for some landscapes on my hikes to put that sharpness to good use. Here's one from Sunday up in the McDowell Mountains in the east valley. I'm impressed how well you can make out Camelback Mountain and downtown Phoenix in the background.
Forum: Lens Clubs 12-19-2019, 06:37 PM  
HD Pentax D FA 1:2.8 15-30mm ED SDM WR lens club!
Posted By SirTomster
Replies: 543
Views: 72,877
A few from Glacier National Park

Best of 2019 by SirTomster, on Flickr

Best of 2019 by SirTomster, on Flickr

Best of 2019 by SirTomster, on Flickr
Forum: Pentax Camera and Field Accessories 11-12-2019, 02:44 AM  
Underwater Housing Gio Pentax K3
Posted By Salvo85
Replies: 11
Views: 1,127
Sorry for the long absence, but the season was long. Unfortunately because of work I couldn't do many dives whit my camera, but I succeed to get some shots.

here some shots:

Pentax SMC DA 10-17mm f/3.5-4.5 ED Fisheye


Pentax SMC DA 10-17mm f/3.5-4.5 ED Fisheye


Pentax SMC DA 10-17mm f/3.5-4.5 ED Fisheye


Sigma 50mm f2.8 macro ex dg


Sigma 50mm f2.8 macro ex dg


Sigma 50mm f2.8 macro ex dg


here the album's link:
Underwater Pentax K3 | Flickr
Forum: Lens Clubs 11-09-2019, 11:48 PM  
Post your HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW pictures!
Posted By RobG
Replies: 2,227
Views: 300,212
That's a great shot of the Eastern Rosella and amazing shots of the juvenile Powerful Owl! I've photographed one here in Canberra, but never at eye level or so close. Wow! :eek:

(The second shot of the Lorikeets is brilliant too)





Powerful Owl
by RobGeraghty, on Flickr
Forum: Pentax Medium Format 11-02-2019, 04:49 PM  
First Impressions of the 645Z
Posted By Camaro5
Replies: 7
Views: 931
Just got the Z last week and had a chance to go out and take some shots today. I was using an FA 45-85 on a tripod, except for the dog portrait which was done on an A 35mm. Didn't really plan that one; it just sort of happened. He hates getting his picture taken so you have to be fast.

Coming from a Nikon D850, the Z is pretty easy to use, except for getting used to the nuances of medium format. I had a little trouble getting sharp front-to-back focus and where I would normally shoot f/11 I found myself shooting f/13 or even f/16. And even at that I wasn't seeing the sharpness I expected, but it wasn't too bad. I'm sure it's just the learning curve. I also think this camera needs a good sensor cleaning as I had to do a lot of spot removal in Lightroom.

These were taken at Sloan Canyon Natl. Recreation Area, just up the road about 5 minutes from the house. The lighting was terrible -- bright sky, no clouds, and with a rookie pushing the buttons, well.... they didn't come out too bad for the first time out. They are, for the most part, what I thought medium format would look like. The portrait of Cooper (the dog) came out pretty nice, too, for a spur of the moment shot. Two of them are shameless shots of my Camaro, which I've shot a thousand times, and the one side shot came out awesome.









Forum: General Photography 10-24-2019, 03:54 PM  
I Made My Own Pentax Camera For The 100th Anniversary (Out of Chocolate)
Posted By Snapppy
Replies: 98
Views: 3,150
Who's to say it doesn't... See that little tiny notch in the bottom corner... :p
Forum: Lens Clubs 08-20-2019, 03:31 PM  
Post your HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW pictures!
Posted By marcusBMG
Replies: 2,227
Views: 300,212
Once a season Glamorgan, the only welsh county to participate in the championship, come north and play a county match at Colwyn Bay Cricket Club. They were playing Lancashire starting at the w/e so I decided it was too good an opportunity to miss to pretend I am a sports photographer, well at least I have a lens to support the pretension. So off I toddled to the ground, actually next door to Colwyn in Rhos-on-Sea (see pic in sigma thread with my 10-20mm). I took my monopod and a bean bag but mostly just used the monopd. I think the DFA 150-450mm is a good lens for cricket actually, good frame fill focussing on the batter at 450mm, easy zoom to get shots to include the field, keeper. I didn't want to mess with too many GB of RAW's from using burst so shot jpg's.



Owzat! OUT lbw.


Glamorgan are not doing very well. They were almost 300 runs behind on the first innings, and have already lost 5 wickets (ie batters out) for only 79 more..


Good shot sir.


and again.


And another one goes down! Out LBW. As you can see the ball has struck his leg (pad) not the bat. That's Leg Before Wicket. 3 fielders behind: wicketkeeper with the gloves, two slip catchers.


Cropped - the last wicket falls just before tea - bowled. If the burst had been just a millisec later I would have got the bails in the air...


Handshakes, thank you and bye.


Well that was fun. The DFA held focus well on my K3, if I moved to a different subject in a jump then it would tend to hunt. And I'm pleased with the IQ of the full sized pics.
Forum: Pentax Camera and Field Accessories 04-13-2019, 04:35 AM  
Underwater Housing Gio Pentax K3
Posted By Salvo85
Replies: 11
Views: 1,127
Dear all,
I’m new to the forum and this is my first thread. I know that many of you are passionate (as much as I am) about diving and underwater photography. It’s years now that I photograph underwater with a compact camera (a Sony RX100 of which I am very satisfied), but my greatest regret has always been not being able to bring underwater my beloved Pentax K5 II (I recently replaced with a K3).
Last year, during an underwater photographic event in Porto San Paolo (Sardinia, Italy), where I work as diving instructor, I came across an Italian Company (Gio-Sim), showcasing some polycarbonate housings: nothing unusual up to here. Then, I noticed their leaflet, where I read Pentax. Pentax?! Wait a minute, it’s impossible, I said to myself. So, I decided to talk to the Company owner Stefano, who confirmed it was true, he could build cases for Pentax. But he also said that he had never made one before, therefore he needed me to send him my camera to study and assess the possibility to build a housing for it. From there on, I started to consider the next steps: upgrading to K3, buying a 10-17 equal to Tokina (a lens praised by underwater photographers worldwide) and a macro lens (in my case, a 50 mm 2.8 Sigma), etc. It took me a few months to assemble the gear and send it to Stefano. After having agreed on the controls I wanted and after a month of anxious waiting, I am now waiting for the housing Gio Pentax K3 S/N 01 to arrive at my door. I post the link to their website below (hoping it is allowed, if not the moderators can proceed to delete it).
Custodia subacquea per pentax k3 | custodia-gio | Custodie subacquee nikon, custodie subacquee canon, custodie subacquee per fotocamere, custodie macchine fotografiche subacquee, custodie subacquee per macchine fotografiche, macchine fotografiche sub

As soon as the housing will be in my hands I will post some pictures, hoping to be able to write a detailed review after a test in the water soon. Stay tuned.
Forum: Lens Clubs 03-28-2019, 05:18 PM  
Post your HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW pictures!
Posted By tduell
Replies: 2,227
Views: 300,212
Immature Black Kite.
K-1, DFA 150-450 + 1.4x TC, handheld. See exif for shot details.

Cheers,
Terry
Forum: Pentax News and Rumors 03-07-2019, 08:26 PM  
Just another CP+ report [pics included]
Posted By clackers
Replies: 142
Views: 11,945
I think looking at all the releases over the last year or so from different manufacturers, they've rejected that, Paul. In a shrinking market, with shrinking lens market accompanying it, you make money where you can.

The new Olympus will be three thousand dollars and reportedly is bigger than the K-1, only 20Mp, only m43 sensor size. So much for mirrorless simpler, cheaper, smaller propaganda.

Pentax lenses and bodies have recently been similar in price to others of their class (I know you own some of the new glass).

A notable exception was the K-1, which came in at a price similar to the 24Mp offerings of some rivals.

I'm only guessing that execs might have thought: if someone buys a new APS-C camera, they've already got the glass, if we offer FF they'll need to upgrade some, we'll make the real money that way.

If so, that pricing trick won't apply to the K-3 III or whatever it will be.
Forum: Pentax SLR Lens Discussion 02-11-2019, 09:17 AM  
DFA 70-200 over exposing
Posted By nitehntr
Replies: 12
Views: 846
thought i would pass on some kudos to precision they repaired my 70-200 and got it back to me in less than 2 weeks and the shots i have taken so far are right on for exposure. they replaced the aperture control arm per the receipt i got back with it. just thought i would also give them some good marks ince i have complained about them being slow in the past.
Forum: Lens Clubs 01-15-2019, 07:01 PM  
Post your HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW pictures!
Posted By Sandy Hancock
Replies: 2,227
Views: 300,212
Did I mention that I recently took the DFA150-450 to Argentina and Antarctica?











Apparently Pentax gear can't focus on moving subjects....

Forum: Pentax K-1 01-06-2019, 08:14 PM  
Pentax K1 MkII Boxing Day Sale
Posted By wombatwal
Replies: 30
Views: 2,281
Pentax K1 Mk11 has just arrived.
Now for the big learning curve.
Forum: Pentax News and Rumors 11-04-2018, 08:10 PM  
FF TC - full frame teleconverter
Posted By asahi man
Replies: 271
Views: 33,841
Both new converters are fullframe and with all AF systems compatible.
But still no exactly shipping date.
Still in late prototype condition.
Maybe because of the new tele lenses.
Best regards
Forum: Flashes, Lighting, and Studio 06-26-2018, 03:19 PM  
Which mode do you use with flash, and why?
Posted By BWG
Replies: 20
Views: 2,008
Auto ISO, the parameters will depend on conditions (e.g 100-800 or 100-3200...). And program line to mtf, Ill adjust aperture if I feel the need to change the DOF.
Forum: Lens Clubs 03-17-2018, 12:33 AM  
Post your HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW pictures!
Posted By Cuom nguyen
Replies: 2,227
Views: 300,212


K3II
Forum: Pentax Camera and Field Accessories 04-24-2017, 04:50 PM  
ZenTilt: A new kind of tripod head?
Posted By WPRESTO
Replies: 20
Views: 2,589
Especially useful on a monopod perhaps?
Forum: Pentax Camera and Field Accessories 12-26-2016, 05:32 PM  
Vanguard Up-Rise II 38 bag: what is this?
Posted By bertwert
Replies: 4
Views: 942
I'd say it's a divider for inside the bag...
Forum: Pentax DSLR Discussion 09-28-2016, 04:01 PM  
Post your animals jumping
Posted By Caver
Replies: 7
Views: 1,258
Pentax K-5II + DA 55-300mmF4-5.8ED

Attachment 327114
Forum: Pentax DSLR Discussion 09-28-2016, 02:45 PM  
Post your animals jumping
Posted By Na Horuk
Replies: 7
Views: 1,258
Cool idea for a thread! I have a couple photos of dolphins jumping. But I didn't even need much AF - I only used AF to pre-focus, then used QS to adjust on the fly. This was using K-01 (not even DSLR, not known for fast AF) and DFA 100mm macro (macro lenses are rarely considered fast in the AF department, due to their long focus throw and range). So this was almost worst case scenario, but I still got plenty of sharp, in-focus photos. The ruined ones were due to me moving too quickly, not so much misfocusing.



Jumping through all the hoops
Forum: Pentax SLR Lens Discussion 07-04-2016, 03:03 AM  
Pentax DFA 28-105 Walkaround on K-1
Posted By xgoetzfried
Replies: 1
Views: 1,453
During a visit to Weimar, site of the best and worst of German History - Goethe, Schiller but also Concentration Camp Buchenwald - I used the occasion to test my new Pentax FDA 28-105. All Fotos OOC, all in camera corrections switched on.
Forum: Pentax SLR Lens Discussion 08-22-2015, 03:45 PM  
Streaking in DA 55-300 bokeh
Posted By BigMackCam
Replies: 10
Views: 1,511
Hi. Are you using a UV or other filter? If so, try taking it off and compare the results. I found that several of my UV filters gave a very similar effect. FYI, I have settled on Hoya HMC UV filters now, as I've yet to have one bad one...

Beautiful shot, by the way! :)
Forum: Pentax SLR Lens Discussion 03-26-2015, 12:28 AM  
Couldn't resist! Samyang 12/2,8 ED AS NCS fisheye
Posted By Yos
Replies: 6
Views: 1,262
Ok will try to add more photos. But so far I really like the lens just need to get used to it. Will try to add more photos later... unedited photos... just wanted to give you guys some pictures to look at.
Forum: Pentax News and Rumors 06-20-2014, 07:41 AM  
Sigma 18-35mm F1.8 Coming for Pentax!
Posted By ChristianRock
Replies: 1,185
Views: 183,174
Well... honestly, I don't think the Sigma is a bit sharper because of "latest technology". Lens design has been around long enough that during the 90s, they could have made the 31 (or all Pentax lenses of that era) different if they wanted to. But that wasn't the philosophy of Hirakawa Jun, the lead Pentax designer at the time, who designed the FA 43 and 77 and I think oversaw the work that a couple other designers did on the 31, after his own 31 design wasn't considered competitive (supposedly he came up with a 31 f/2.4 based on the old K series design).

Forum member Greg from NorthCoastPhotographer.net made a summary of one of the points from Hirakawa's notes on the FA Limiteds design, that explains why they didn't go for "all out sharpness" and the "MTF Championship" as I call it...

"As an example of this new attitude toward lens design, I will explain how we dealt with field curvature and astigmatism correction. An ideal of current lens design is to make the subject plane as flat as possible. Through specific techniques [detailed in the original article], field curvature is reduced, leading to a lens that will produce excellent scores on numerical tests. However, flattening the subject plane comes at a cost: pictures taken with such a lens will lack spice. With the Limited lenses, small amounts of field curvature were left uncorrected so that we could remove “astigmatic difference.” While this reduces the overall numerical score of the lens, without the “astigmatic difference,” the point of focus can be depicted with a more tactile, three-dimensional rendering, leading to a better overall image."

"The Limited lenses weren’t merely corrected for various chromatic aberrations. Focus points for each color and out of focus boundaries were also aligned, allowing for a gentle transition from the object in focus to the out of focus portions of the image. The corrections applied to the Limited lenses are a bit different from those normally used in the design of lenses."


Source: Lessons from a Legendary Lens Designer | Photographic Ideals, Basic Principles | The Northcoast Photographer

So, if anyone goes with the Sigma, they should at least know they are going for a different design philosophy, not just to a more "technologically advanced" lens. I, in fact, believe that the coatings on the FA Limiteds are still better than any Sigma coatings - but that's just an impression, I have no way to prove it one way or another :) But that's probably where the technology advances more than other areas...
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