Contact Us

How to contact us:

Phone: 801-502-5942

email: tom@sparky.cc

Please note that due to the nature of our work some calls cannot be answered immediatly but we are very fast return your call. If you get our voice mail, please be sure to leave your name, phone number and a good time to reach you.

Previous Posts
Subscribe to our newsletter

Entries in dof (3)

Monday
Feb202017

20/365 Primes 31 Limited and 200 Vintage

Todays post contrasts two very different lenses. A 31mm fully modern lens and a 200mm fuuly manual vintage lens.

Camera: Pentax K1 (Click for reviews)

Lens: SMC Pentax 200mm f/2.5 K-series  (Click for reviews)

ISO 200 f/8? (EXIF does not include f/stop) 1/6400th Tripod mounted.

This was a test shot to frame and get focus with this manual focus lens. To me this has an almost 3 dimentional quality. The out of focus areas render very smoothly. 

ISO 800 F/8? (just my mest memory) 1/8000th Tripod Mounted

This family, out on a Sunday afternoon walk, seem separated from the backgroung and foreground in a way I like very much. With my 54 year old eyes it is a bit of a challenge getting the focus.

Lens: SMC Pentax-FA 31mm f/1.8 AL Limited (click for review)

ISO 800 f/9 1/1000th tripod mounted.

Compare the above image at f/9 versus the one below at f/2.5

ISO 800 f/2.5 1/8000th Tripod mounted.

I was surprised that at f/2.5 most of the tree trunk seems in focus. You can see a diference between the two apertures. At f/9 the clouds are still pretty sharp. But opened up to f/2.5 the blur is gentle and still lets you see what is in the background pretty nicely.

It was a fun Sunday afternoon comparing these two lenses. I like the looks that each lens gives very much.  I can't wait to try out the 31 Limited on a family portrait!

Monday
Feb202017

19/365 Primes 31mm DOF Test

This is a family room dof test of the 31 Limited.

Camera: Pentax K1

Lens: smc Pentax-FA 31mm f/1.8 Limited

All at ISO 1600.

f/1.8 1/125th

f/2.5 1/80

f/4 1/30th

f/5.6 1/15th

f/11 1/4th

Kind of a boring excersize but I like seeing the dof at the closest focusing distance which by the way is .3 meters or about 11 inches.

If you want to see all the pics between f/1.4 and f/11 go to The 365 Primes Project.

Sunday
Feb052017

5/365 Primes 77mm Thin Ice

You are on thin ice! I'm grateful for the warning, I never would have known.  This pond is in my neighborhood. And We have seen some cold days. But yesterday was a balmy 40 degrees.

I decided to go outside with the 77 Limited and see how if acted a f/5.6.

Camera: Pentax K1 ( Full frame camera)

Lens: Pentax SMCP-FA 77mm f/1.8 Limited Silver

ISO 100, F/5.6 1/60 Hand Held

I think the background has a pleasant out of focus character without loosing the ability to know what you are looking at. I like the shimmery quality of the bokeh.

The shutter speed is pretty slow for a hand held shot. Especially considering the reduced strength and control of my right side. Even so, the in camera shake reduction did a fantastic job.  Below is a detail crop in on part of the sign.

I would love your feedback for ideas on how I could better my posts for this 365 project.  Have you shot with this lens or camera? What has your experience been?