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Forum: Monthly Photo Contests 02-11-2016, 02:55 PM  
Sentinel 2
Posted By TAP
Replies: 6
Views: 316
nom nom nominate
Forum: Monthly Photo Contests 02-11-2016, 02:50 PM  
Starlight Silhouette - January Contest
Posted By TAP
Replies: 12
Views: 626
nom nom nominate
Forum: Monthly Photo Contests 02-11-2016, 02:49 PM  
The School Bus
Posted By TAP
Replies: 22
Views: 1,062
nom nom nominated
Forum: Pentax News and Rumors 01-14-2016, 03:42 PM  
K1 pics new update with the 3 fa ltds
Posted By TAP
Replies: 62
Views: 10,760
Full-res JPEGs would be a good start
Forum: Pentax SLR Lens Discussion 12-21-2015, 05:05 PM  
Is the Super-Tak 35/3.5 sharper?
Posted By TAP
Replies: 16
Views: 1,290
It looks like I'll be holding off on the 35mm for now. I was mostly just curious how it held up against my 50's so I could have a point of reference. When the time comes, I think I'll go with the DA 35.

Thanks OSV, Malinku, Nicolas, and Jim for the extensive information.

Once again, I'm impressed by the quality and volume of responses I've received. Thanks everyone.
Forum: Pentax SLR Lens Discussion 12-18-2015, 04:52 PM  
Is the Super-Tak 35/3.5 sharper?
Posted By TAP
Replies: 16
Views: 1,290
Hello Pentaxians,

I might buy the Super Takumar 35mm F3.5
( but only if it's sharper than my 50mm lenses )


In your opinion- which lens has the best overall sharpness?
  • Super Takumar 35mm F3.5

  • SMC Pentax-F 50mm F1.4

  • Super Takumar 50mm F1.4


They are all very close, according to PF's lens database:
  • Super Takumar 35mm F3.5 - Sharpness: 9.1

  • SMC Pentax-F 50mm F1.4 - Sharpness: 9.2

  • Super Takumar 50mm F1.4 - Sharpness: 9.3



Thanks!
Forum: Pentax News and Rumors 12-18-2015, 12:26 PM  
Pentax FF Teaser Updated
Posted By TAP
Replies: 496
Views: 62,352
It also doubles as a fill light!
Forum: Pentax News and Rumors 12-09-2015, 04:17 PM  
Pentax FF Teaser Updated
Posted By TAP
Replies: 496
Views: 62,352
Thanks for the laugh :)
Forum: Pentax News and Rumors 11-30-2015, 05:17 PM  
Pentax FF Teaser Updated
Posted By TAP
Replies: 496
Views: 62,352
Strange they've been so secretive about the name...

I'd be a little surprised if it was anything other than K-1.

Forum: Troubleshooting and Beginner Help 11-19-2015, 03:36 PM  
Optio WG-2 as Webcam?
Posted By TAP
Replies: 7
Views: 757
Thanks for the responses, everyone.
Forum: Troubleshooting and Beginner Help 11-18-2015, 02:36 PM  
Optio WG-2 as Webcam?
Posted By TAP
Replies: 7
Views: 757
Fellow Pentaxians,

Is it technically possible to use my WG-2 as a webcam?

I have a webcam built in to my laptop, but not my desktop.
Is there any software (perhaps open source) that will allow this to happen?

... Or is this not possible due to hardware limitations?


I appreciate your feedback!
Forum: Pentax News and Rumors 10-16-2015, 01:56 PM  
Betty White is a Pentax user!
Posted By TAP
Replies: 39
Views: 5,577
Looks to me like a canon/nikon lens attached to an adapter.. but I could be totally wrong.
Forum: Monthly Photo Contests 09-02-2015, 02:43 PM  
Augus 2015 Contest Submission
Posted By TAP
Replies: 2
Views: 300
Vintage sign. Great color. Deserves more nominations.
Forum: Monthly Photo Contests 09-02-2015, 02:42 PM  
Game Over
Posted By TAP
Replies: 10
Views: 728
Incredible.
Forum: Pentax News and Rumors 06-11-2015, 01:50 PM  
"Everything Changes" with this Announcement: June 8
Posted By TAP
Replies: 769
Views: 92,436
hahaha yes!
Forum: Monthly Photo Contests 04-20-2015, 12:43 PM  
Poll: Expired Contest Poll VOTE NOW - Photo Contest #103 Poll (Mirror Image - March 2015)
Posted By TAP
Replies: 16
Views: 7,299
true- that crossed my mind just after posting :o
Forum: Monthly Photo Contests 04-17-2015, 02:26 PM  
Poll: Expired Contest Poll VOTE NOW - Photo Contest #103 Poll (Mirror Image - March 2015)
Posted By TAP
Replies: 16
Views: 7,299
I would love to be able to see the results after I vote, like with other forums / polls...
Forum: Pentax SLR Lens Discussion 03-18-2015, 02:30 PM  
Best Lense for Photographing Artwork?
Posted By TAP
Replies: 30
Views: 3,529
I just took a longer look at the Powerpoint you linked to.
Wow. You weren't kidding when you said "very detailed" (haha)!
Today I venture back into shooting art with flash- so thanks for the link!




I just got polarizers for my lens and flashes off of Amazon this week.
I paid under $20 USD for everything- including shipping.
Links provided below for anyone who's interested.

(Polaroid 49mm Polarizer- $8 and has great reviews)
http://www.amazon.com/gp/product/B0085YG34K/

(Set of 10 Polarizer Sheets- $11)
Polarizer Sheets: Amazon.com : Polarizing Film Sheet - set of 10 : Home And Garden Products : Camera & Photo

I could have bought just 2 sheets from another seller,
but the total cost with shipping would have been $15..
so I figured it's better to pay less and have extras :)
Forum: Pentax SLR Lens Discussion 02-26-2015, 06:52 PM  
Best Lense for Photographing Artwork?
Posted By TAP
Replies: 30
Views: 3,529
Not a bad idea. That would simplify the process of configuring the lighting setup. What size softboxes are you using, and what is your shooting distance? Do you use polarization as well?

Evenness of lighting isn't a huge concern at the moment, but it might be helpful in the implementation of the scanning rig I'm designing. Thanks.

I've looked into this method in the past, but never got around to acquiring the polarizer sheets for the flashes. How do you go about ensuring the lens polarizer is perpendicular to the flash polarizers? Is it more of a "trial and error" kind of thing?
Forum: Pentax SLR Lens Discussion 02-25-2015, 06:52 PM  
Best Lense for Photographing Artwork?
Posted By TAP
Replies: 30
Views: 3,529
Brace yourselves! Here's my lengthy reply to all of the input/questions I received.
(One more time) Thanks everyone for all the replies. I really appreciate it.


Thanks for the detailed info- this really helped me understand why macro and a longer FL are a good fit for this scenario.




Thanks for the lens suggestions!
What a thorough response! I'll definitely look into the possibility of using an enlarger lens.
Awesome; I'll give that a shot & compare results with my f/5.6 shots.

---------- Post added 02-25-2015 at 05:52 PM ----------


I have a very small physical space to work with. I could likely use a longer macro lens (and shoot more frames), but I perform consistency checks (for focus and camera angle) each time I move the camera- so Increasing the amount of frames will take a lot more time. I'm currently designing a rig that will dramatically reduce the shoot time though. Once it's built, a 90 or 100mm macro would make a lot more sense.

---------- Post added 02-25-2015 at 06:01 PM ----------


I'm more than happy to share my process, just keep in mind it's FAR from perfect (haha)
  • For overlap, short answer is "not enough". I leave about 1/4 so the image will stitch properly. I've had a lot of success using Photoshop's automated "Photomerge" feature for stitching the frames. I may allow for more overlap in the future for better overall sharpness.

  • I use an extremely crude method for keeping things parallel. I basically lean the piece of art against a wall, and then match the tilt of the camera to the piece. I'll usually sit the artwork on top of something a few inches from the ground. Then I find a large picture frame or stretched canvas and lay it at the base of the piece. This gives me a guide for moving the tripod. I still check focus between shots just to make sure.

  • If it's a large piece of artwork, I can't always shoot the entire piece due to limitations with the tripod (can't go low enough or high enough). In that case, I flip the artwork upside down halfway through the process to shoot the other side. Then I rotate them back in Photoshop before using Photomerge.

  • Lighting has been my number one problem since I started. I have two manual flashes (both Yongnuo YN560's) but I haven't used them for scanning in quite a while. I would read countless tutorials on using flashes for shooting artwork. Despite my best efforts, they caused more problems than they solved. Now I just shoot at long shutter speeds with a polarizer. My light comes through the windows from two adjacent rooms. It's pretty dim (I'm usually around 8 to 10 seconds at f/5.6 with the polarizer attached) but it works. I've used overhead lighting as well- it cuts down exposure time exponentially, but requires more work in post.


I'm designing a rig that will really simplify the process.
If you're interested, here's the parameters so far:
  • Fully manual operation to save on cost

  • Horizontal movement via track & trolley

  • Height adjustment via clamps/locking pins

  • Flash mounts with adjustable length

  • Bubble levels for angle compensation

  • (maybe) laser tape measure to align rig with artwork


This will hopefully allow me to shoot much closer,
with a lot more frames, at much greater detail.

Let me know what you think! :)
Forum: Pentax SLR Lens Discussion 02-19-2015, 11:55 PM  
Best Lense for Photographing Artwork?
Posted By TAP
Replies: 30
Views: 3,529
Wow, thank you everyone. I did not expect to get so many replies with such helpful information.

It appears the consensus is to use either a macro, or the 40mm limited (or xs), or at least a lens with longer FL.

There's a lot more I'd like to say in this reply, but i'm away from my computer until Monday & am posting from my mobile. I'll be sure to post back asap.

Thanks again for the insight, everyone. I really appreciate it.
Forum: Pentax SLR Lens Discussion 02-18-2015, 08:18 PM  
Best Lense for Photographing Artwork?
Posted By TAP
Replies: 30
Views: 3,529
Hey Pentaxians,

I use my Pentax DSLR to digitally scan paintings and artwork for clients at work.
The process involves shooting the artwork in segments, and stitching them together in post.
This allows the artwork to be printed quite large (I did a 4ft x 5ft print recently) at full resolution.
My clients are very satisfied with the results, but I know there's room to improve.

I want to achieve the sharpest overall images possible with the limited resources at my disposal.

A Little Background:
I Currently use my SMC Tak 50mm/1.4, or my SMC Pentax-F 50mm/1.4 (both at f/5.6)
Because of the crop factor, these equate to about 75mm on my k-5.

Questions
  1. Is this the most suitable aperture to achieve best overall sharpness with these lenses?

  2. (Assuming sharpness gets worse toward the edge of the frame) should I be shooting more frames and cropping them down to avoid losing detail?

  3. I've heard that "art lenses" are not the best for overall sharpness. I have the (SMC Tak 35mm/2) and the (SMC Tak 55mm/1.8). Would either of these better suit my needs?


With my current setup, I can't go much longer than a 55mm without having to tear down a wall.


Any other suggestions/advice/input is very much welcome. I wouldn't be the photographer I am today if it weren't for these forums, and I'll gladly accept any information you can offer that will help me continue to improve.


All the best,

Pat
Forum: Pentax News and Rumors 02-04-2015, 07:00 PM  
Pentax Full-Frame, DFA* 70-200mm, DFA 150-450mm Announced
Posted By TAP
Replies: 544
Views: 72,687
So. Much. Win.
Forum: Pentax News and Rumors 02-04-2015, 06:28 PM  
Pentax Full-Frame, DFA* 70-200mm, DFA 150-450mm Announced
Posted By TAP
Replies: 544
Views: 72,687
Probably will be. The mock-up in the photo is not a functioning prototype. :confused:
Forum: Pentax Forums Giveaways 12-14-2014, 12:08 AM  
3 Million Post Giveaway: Confirm your entry!
Posted By TAP
Replies: 2,854
Views: 80,003
first.













Just kidding :)
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