Tag Archives: test

Quick Pentax Lens Test: Parfocal or Varifocal?

I did a quick test on three lenses that I have to see if they are Parfocal or Varifocal. If you are unfamiliar with those terms, Parfocal is a type of zoom lens that does not have focus shift when the lens is zoomed throughout the focal length range. This is a great feature for video work because the photographer can achieve focus and zoom without the need to refocus. … Continue reading

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Camera Lens UV Filter Test: Does coating make a difference?

I decided to do a quick test to see how my collection of 58mm UV filters damage image quality. I also took an image without a filter to see what difference using no filter makes. Why do I personally use filters? I want the added protection that a filter brings as well as the simplicity of cleaning a filter instead of the front element of the lens. I occasionally take … Continue reading

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Abstract submission to a gallery idea.

I’m part of a local photographer group on facebook and someone offered up the possibility of being in a gallery. I thought I might as well come up with an idea and see if the results were worth printing. Here is the description: “The idea is cell phone pictures, printed, matted and framed in recycled frames… Think sustainability. Go to goodwill, salvation army, or even reuse old frames around your … Continue reading

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Second SD and Micro SD card Speed Testing Article

The first article on the speed of the SD cards I wrote was pretty successful. I get quite a bit of traffic from that, so I think people probably find it useful. The issue with writing follow up articles is that I’m limited to what I have on hand to test with (if you have contacts to acquire test cards let me know). It’s been a few months and I … Continue reading

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