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Forum: Pentax SLR Lens Discussion 12-12-2018, 11:56 AM  
3D Printing Lens Hoods!
Posted By writeb
Replies: 11
Views: 1,808
Unfortunately not. My integrated 3D scanner was a bust, and being a glutton for punishment, I bought into another crowdsourced campaign - this time for a dedicated 3D scanner which was a good 1.5 years in the making. They finally shipped it and I've never even set it up - for lack of reasonable Android support. So, no, I haven't been able to pursue this. The biggest constraint is just getting the dimensions and tolerances locked in. Someone with access to an amazing 3D scanner and/or strong CAD-fu needs to advise on this.
Forum: Pentax SLR Lens Discussion 04-11-2016, 01:30 PM  
3D Printing Lens Hoods!
Posted By writeb
Replies: 11
Views: 1,808
Thanks all for the great responses! Yes, a definite business model exists for this. Some comments regarding my status:

1. I was a little too optimistic on the functionality of my newish 3d scanner. 3d scanning is apparently hard (go figure :o ), and I definitely wanted to heavily use that method for tolerance and replica considerations. I need more time to tinker with settings to see if I can get a workable scan flow.

2. Laser based scanning is thrown off by slightly reflective surfaces, so I'm working through how to temporarily 'matte' the surfaces of scannable items to reduce image noise.

3. The bayonet mounts on the FA* lenses at least are fairly complex. I think, primarily, because they build them so they can be reversed. Initial prototypes will more than likely just fit in a one-way fashion.

4. PZ Switch, I'll take a peek (expecting to receive lens today finally) but have to admit being squeamish at the concept of popping off any switch, particularly given that they're prone to fail. I can't make promises on that one quite yet :-/
Forum: Pentax SLR Lens Discussion 04-05-2016, 05:07 PM  
Fa 77 or da 70 for concerts?
Posted By writeb
Replies: 12
Views: 1,572
I've had DA70, FA77, FA*85, and Samyang 85.

Ultimately, I kept the DA70, and FA* 85, but sold off the FA77 and Sammy. If your camera body supports the proper ISO performance, the DA70 is a great choice. If you're shooting a K-7 or some older camera with questionably helpful ISO performance and you need to squeeze that extra stop out of your lens, then it's worth considering. But overall, the performance was not that different (in fact, I preferred some rendering the DA70 provided in natural "street venue" performance) to justify the cost premium over the DA70.
Forum: Pentax SLR Lens Discussion 04-05-2016, 12:14 PM  
3D Printing Lens Hoods!
Posted By writeb
Replies: 11
Views: 1,808
Beefing up on some legacy FF glass, and recently ordered an FA* 28-70 (enroute).
Of course, without the difficult to find (and I'm sure expensive) PH RBC77 lens hood :-/

Q: Does anyone have one (FA* 28-70 PH RBC77 lens hood) in possession that they can provide me more details on? E.g. measurements, bayonet placement, some photos? Long shot, letting me borrow and scan it for precision measurement?

Q: Anyone else out there with more 3d printing (or CAD related) experience I can work with on this?

Provided we can get the specifications dialed in, the possibilities are fantastic for printing awesome (and even specialty) lens hoods and filter holders for our lenses.

I'm going to take a stab at producing a replacement for my DA* 16-50 lens hood (PH-RBJ 77 mm), but would really appreciate if someone can provide me consultation on the FA* 28-70, or just any anecdotes/support on 3d printing stuff for our cameras in general.
Forum: Pentax Q 04-05-2016, 11:32 AM  
Anyone into 3D printing?
Posted By writeb
Replies: 6
Views: 1,166
I just got one delivered a few weeks back (Flux Delta - Via kickstarter). So far, not too shabby. This weekend I had the idea of figuring out how to create the many missing lens hoods for various lenses. I was inspired since I recently purchased an FA* 28-70 (without lens hood of course :/ ), that realized 3d printing would be an ideal killer application to solve this problem.

The main issue is just trying to figure out the bayonet specifications without actually having a copy to model off of. (Unless there's some kind volunteer willing to let me borrow one). Otherwise, I'll have to model off of my FA* 85mm mount and reverse engineer the positive mount from the 28-70. Initial plan is to prototype until I get it locked in, but then print the final with some black filament. If we want to get fancy, we can scribe for paint so folks can get creative. Maybe even create (if one doesn't already exist) a repository here for 3d printable accessories.
Forum: Pentax Forums Giveaways 07-02-2013, 05:24 PM  
Ricoh GR Digital IV Giveaway: Ending 7/8/2013!
Posted By writeb
Replies: 630
Views: 85,560
I'd definitely enjoy and use a GR IV! My entry during my time in Taipei:

Year of the Snake - Jinshui Road, Taiwan
Forum: Post Your Photos! 07-02-2013, 05:21 PM  
Landscape Year of the (light) Snake
Posted By writeb
Replies: 1
Views: 727
Taken with trusty K-5 (Pentax K5 K-5 Digital SLR Camera Body, Black 14748)
Jinshui Road, Taiwan

Forum: Pentax SLR Lens Discussion 12-03-2012, 07:31 PM  
*PETITION* Lets put an end to the crazy online Pentax lens prices in the US!
Posted By writeb
Replies: 550
Views: 36,838
I respect the small guys and understand the rationale, but if the practice has not worked (would like to see data on how this practice has panned out), then it's time to end UPP. I'd certainly buy more high ticket items new if the price was reasonable.
Forum: Monthly Photo Contests 06-29-2012, 11:11 AM  
A Game of Shadows
Posted By writeb
Replies: 0
Views: 477
Forum: Photographic Industry and Professionals 04-26-2012, 10:10 PM  
Rumor mill: FF Nikon D600 this summer
Posted By writeb
Replies: 2
Views: 1,398
Dag namit. Thought I was a quick mover. Link? What forum?
Forum: Photographic Industry and Professionals 04-26-2012, 12:47 PM  
Are we photographers? Or whiners? Or gear-fetishists?
Posted By writeb
Replies: 89
Views: 6,744
Title is link bait, but the OP is quality - if a bit long.

Of course many of us are all three. We like photography, new shiny things, new technology, and the confidence and self-assuredness that comes along with having bought the best thing for the money spent.

You can't blame people for wanting their $1,500 purchase (and multiple thousands investment in lenses) to act in some form as a status symbol. It's a core marketing strategy used by a majority of products, be it Pentax, or any other camera manufacturer. People coalesce around these decisions (especially around adversity) and the inevitable team mentality arises. That's the elephant in the room as far as I'm concerned. There will always be the Joneses with the cool stuff, and they do play a role in buyer rationale, as even keeled and balanced as one purports to be.

Pentax fans in general are battle weary. They're self conscious, out-argued in volume, distracted, and ignored. This is the major flash point for invoking the major toxicity on PF. If I've just spent the past two hours of my life arguing with fools on DPReview or Engadget comment idiots who haven't touched a Pentax in their lives, of course I'm going to blow a fuse when I see someone on our home base spewing the same balderdash. It's taken personally - it just is what it is.

But my original premise is, similar to learning and teaching not being mutually exclusive, neither is being a lifetime student of the art of photography exclusive to gear lust, technical analysis, and being self conscious. All can certainly co-exist simultaneously. Just as some of the best photographers I know hate photography. If the point of the article was a passive aggressive way to encourage us to "choose one," then, that's a tougher pill, but point taken. :evil:
Forum: Photographic Industry and Professionals 04-26-2012, 12:18 PM  
My Pentax Harper's BAZAAR Cover
Posted By writeb
Replies: 34
Views: 2,994
Forum: Photographic Industry and Professionals 04-26-2012, 12:16 PM  
Rumor mill: FF Nikon D600 this summer
Posted By writeb
Replies: 2
Views: 1,398
Nikon D600 full frame DSLR rumored - SlashGear

This would be very interesting. If Nikon gets a foothold here (Full-frame "entry level"), there may be trouble in Pentax land from us full frame fans. - Especially as the K-1 remains vaporware.

"Rumors today have indicated that Nikon is working on a new full frame DSLR. The camera company currently offers the D800, and new information points to Nikon creating a cheaper full frame DSLR, the D600. While the megapixel count is currently unknown, a summer announcement is reportedly on the cards that could change the current dynamic of the Nikon range. (More)"
Forum: Pentax News and Rumors 02-05-2012, 03:15 PM  
"Pentax hints at new DSLR camera" - AmPhoto article
Posted By writeb
Replies: 12
Views: 3,874
Thank you! Please let this thread stand as reference point to the apparently statistics-less "DSLRs are doomed" camp, at least for the next 12 months.

"May we never hear of it again until then!!"

I'm curious what this all means for the Q line. How is it doing? Is Pentax-Ricoh planning on phasing it out?

I'm also unreasonably optimistic about the upcoming CP+ Camera and Photo show. I'm suspicious that Pentax-Ricoh may have some more news. With the statements lately around filling their line-up and market opportunities, the pocket cams, Q, K-r, K-01, and K-5 seem to lead into the FF direction (K-5 is awesome, but there's a decent gap between that and the 645D!). A compact slr with a bigger than APS-C sensor, (or at least a square sensor to take advantage of the full image circle) compatible with most if all digital era and FA lenses would be an amazing opportunity at this point.
Forum: Pentax K-01 02-02-2012, 12:42 AM  
Want to see a K-01 review early?
Posted By writeb
Replies: 121
Views: 16,146
Would certainly entertain the prospect of this baddie being my back-up camera, which sneaks up and becomes my primary camera. As mentioned elsewhere, my K-5 isn't going anywhere, but my K-7 is certainly nervous at this announcement.
Forum: Pentax SLR Lens Discussion 11-28-2011, 04:30 PM  
Portrait lens help!
Posted By writeb
Replies: 66
Views: 8,069
I've had opportunity to own the fa* 85mm, samyang 85mm, fa77, da70, Da* 55mm, m50/fa50 1.4, F 50 1.7, Da*50-135, and a few more less memorable (for portriature) but competent lenses. In my experience,you want compression and pop in a portrait lens, and something that isn't going to materially distort your subject on aps-c. For me, that sweet spot -focal length wise is 55mm and up. Even the venerable da40 renders human subjects a little unflatteringly in portrait orientation up close. In terms of bang for buck, I'd recommend you give the da70 a try. Its kind of unstoppable on the k-5. In terms of sheer versatility and image quality, the 50-135mm remains one of the awesomest lenses for portraiture I've slapped on a Pentax.

The fa77 was fine but my copy didn't really perform $200 better than the da70, and in some instances fell short, especially when you factor in post processing. People say the da70 is more "clinical" than the 77, but I felt it had much more "pixie dust" than anything 50-55mm in Pentax glass. (M50 is very close but requires some boost in post). If you boost your budget a bit, I'd say go with the 50-135. I really think you'll be pleased with getting the equivalent of four prime lenses for the cost of two.
Forum: General Talk 11-20-2011, 11:10 PM  
Consumers are Willing to Pay More for Nikon
Posted By writeb
Replies: 20
Views: 2,194
I think it's hardly all horse-pucky, in fact, seems to jive well with the FF-based rationalizations for Pentax in that it will help seed professional perception and a long term upgrade strategy for amateurs and semi-professionals with deep pockets. Notable quote:

"The results may verify expectations that Nikon’s overall brand/price power is positively impacted by the presence of its “high end” line of cameras."
Forum: Photographic Industry and Professionals 11-19-2011, 11:31 PM  
Pentax FF Fodder: Digital Camera Consumers are Willing to Pay More for Nikon
Posted By writeb
Replies: 1
Views: 1,198
Looks like there's some meat to the argument that Full-Frame Pentax could have a material upside to the business. Article here:

Digital Camera Consumers are Willing to Pay More for Nikon - Yahoo! Finance

Interesting statement:
"The results may verify expectations that Nikon’s overall brand/price power is positively impacted by the presence of its “high end” line of cameras."
Forum: Pentax Full Frame 10-20-2011, 11:34 PM  
Pentax Full Frame - An official statement from Pentax (they listened!)
Posted By writeb
Replies: 3,121
Views: 328,085
The lead-in initially (and incorrectly) gives the reader the impression that the beginning sentences are from the Pentax Europe President. It's only a few sentences in where you finally convince yourself that it's not the President writing, and only further down where you see the actual letter you fully get what the title meant.

Just $0.02,

I'd be in line for a FF version. Wanted one for the longest.
Forum: Pentax K-5 09-16-2011, 09:37 PM  
%*$#^(&! The Lens Release Button Fell Off my K-5!
Posted By writeb
Replies: 206
Views: 45,048
Argh. Little bugger fell of this week and I didn't even notice it until I was eating. Backtracked the whole way back to my desk and couldn't find it. Off to Pentax service center I guess. Time to dust off the K-7, I guess.
Forum: Pentax K-5 07-05-2011, 11:58 AM  
Image rotation when reviewing image. Worked on K7 but not K5?
Posted By writeb
Replies: 23
Views: 4,875
Man, I sure was hoping this was a setting that I misconfigured somewhere. Very unhappy to hear that it's something Pentax neglected to include in their latest APS-C flagship. +1 to hoping they fix this in the future.
Forum: Pentax SLR Lens Discussion 06-19-2011, 09:19 AM  
Rokinon 85mm f/1.4 vs SMC Pentax-M 85mm F2, which one to choose?
Posted By writeb
Replies: 110
Views: 34,580
Before you give up on the Rokinon, give focusing through live view a chance. Much better results in terms of nailing focus vs the viewfinder. I have a distinct tendancy to end up front focusing anything f/2 and wider otherwise. I have a fa* 85mm, and I still have held on to a copy of this lens. It's that good of a value.
Forum: Photo Critique 04-26-2011, 07:20 PM  
People Fun with the Easter Bunny
Posted By writeb
Replies: 3
Views: 2,146
Thanks. Is your monitor calibrated? On mine, the shadow isn't that harsh. If you take into effect the dynamic range of the photograph, the shadow (I thought) wasn't so bad. Point taken on the focal target, the rabbit doesn't move :) If you look at the grass blades, the focal depth of field seems to be in the right range. I'm chalking it up as little guy movement. I felt the slight softness worked for the overall photo, but you guys are the critiquers. :)
Forum: Photo Critique 04-25-2011, 10:26 PM  
People Fun with the Easter Bunny
Posted By writeb
Replies: 3
Views: 2,146
Hi, my first time earnestly submitting for a critique here. Take it easy on me :) I was really pleased with the composition and capture of my son here, I was particularly interested in any impressions of my post processing. While not heavy, I certainly did raise some contrast and saturation levels to make the grass pop more. Thanks!

Forum: Sold Items 03-29-2011, 10:30 PM  
For Sale - Sold: SMC Pentax-FA 100mm Macro f2.8 - mint! (US)
Posted By writeb
Replies: 7
Views: 4,827
+1 to these shots being fantastic. Can I please ask what focal length you used for this? (perhaps another 100mm macro?). Thanks for leaving the metadata in the photos, btw.
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