Tag Archives: testing

The K-5 is back (Cat photos)

As I mentioned in my previous post, the K-5 was returned from service. For my initial test I took some macro photos and also too a few photos of two cats. The conditions in this case were dark with tungsten lights, so ISO was pretty high at 2000-3200. It’s funny how quickly I start taxing the K-5 in situations I usually wouldn’t bother trying with the K-7. The gray one … Continue reading

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Second SD and Micro SD card Speed Testing Article

The latest speed testing article (October 2017) is here. 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 … Continue reading

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Comparison: FA 31mm f1.8 Limited to DA 40mm f2.8 Limited

The question was brought up on Pentax Forums recently “Is the 31mm Limited really 2.8 times better than the 40mm Limited?” As you can guess, the debate has been raging on for many pages. Here are the resulting images tagged on Flickr. They are all full sized with EXIF for your viewing pleasure. Later in this article I proved a big table with each image and general information with links … Continue reading

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Methods of Testing Your Lenses

I recently wrote and article for PentaxForums.com. It was my most complex lens review to date, with a lot more technical information and visual examples than the ones I currently have here. I plan to get more into reviews like that one once I finish going through my lens collection with general opinion centric reviews. In this article today I’ll go over a few methods I’ve attempted so that I … Continue reading

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Fixing the K10D Back-focusing AF Issue

Disclaimer: There is no warranty or assuredness that the text provided is accurate, so you must try at our own personal risk. Know that you could screw your camera up if you are not careful and the risk is only yours to take. If you don’t want to take the risk, send the camera in to Pentax for servicing. It’s that simple! Now with the Myth Busters-esque disclaimer out of … Continue reading

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Pentax K-5 excels at dynamic range (among other things)

References: DxO mark PentaxForums The new K-5 is on par or better than current full frame sensors in quite a few aspects from a technical standpoint. The dynamic range of 14.12 Ev at ISO 80 specifically tops all other cameras, which is one technical value I personally feel is important in a picture taking tool. So overall, I’d say Pentax is making a good showing with this new camera body … Continue reading

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Camera Factory Variation (Auto-Focus alignment)

I was planning on writing an article about my three wide angle lenses (14mm f2.8, 10-17mm fisheye, and Zenitar 16mm fisheye). I started taking a few sample photos with each and noticed something strange. The images at wide aperture with the 14mm f2.8 looked really poor. Initially I was thinking that user error was involved, so I went through various processes about… 3 or 4 times with the same result. … Continue reading

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