In IR camera reviews, their Shutter Lag data In IR camera reviews, their Pre-focused's Shutter Lag time data is very helpful. their camera AF speed testing has...
DPR played a sorcery in the k-5 compared to other cameras http://forum.xitek.com/showthread.php?threadid=818466 (Chinese) http://translate.google.com/...
Some readers would be blindfolded by DPR's k-5 comment. DPR furtively removed the original testing images of k-5, (@ 50mm f1.4 standard lens, original images...
The k-5 stains (UFO) are in AA-filter or anti-dust-filter or the sensor assembly process (in Pentax's plant), and not a firmware problem. when the sensor and...
thank you peter once again very fine work ... From: "peterzheng_real" <ymzheng_qing@...> To: "ricehigh pentax" <ricehigh_pentax@yahoogroups.com> Sent:...
some cleaning solution were congealed to become vestiges on surface appendiculate in the AA/IR-filter or anti-dust-filter or the sensor surface, (in Pentax...
Pentax said: PENTAX paid close attention... to developing the K10D's DR system, and applied its original SP (Super Protect) coating to the surface of the...
crafty Hoya/Pentax official announcement despite Hoya/Pentax acknowledges K-5 sensor issues, but it is a crafty attitude: Hoya/Pentax said: We deeply regret...
feel the mirror system between the d7000 and d300s yesterday I tried a comparison of the mirror-oscillation between the d7000 and d300s, there a little...
Thank you Peter a great reporting job as usual If you would be so kind a few short questions D7000 poor AF in dim light--- even with fast lens ? Sony 580...
In the DSLR camera, the instantaneous of upward movement of mirror system would lead to a damped oscillation (a damped forced vibration), which upward movement...
Hi libros, I already tried in the evening under the indoor lighting to operate the AF over the d7000 and d300s. here were several Nikkor AF lenses. Though the...
 thank you peter your Post started some of my local camera friends comparing k7 and k5 photos Now Peter I have never seen a K7 until the other night !  ...
under the low-light here the k-5 AF is still poorer under the low-light here the k-5 is still the worst AF speed and performance, compared to other major...
do not arbitrarily adjust the AF screws of the camera I already saw RiceHigh and else others posted them adjusted the AF sensor screws in the camera body,...
Hi Peter, I am not sure about the degree of freedom for which the 3 screws will change. But if the Xitek poster is right, one is for shifting the whole module...
Hi Rice, the Xitek poster is not right. it is a wrong way. Also, after any one screw was tweaked, what way would you get back AF-sensor in an original...
the posted article divided into 3 parts, Part 1 is about the lens and AF-error, Part 2 is about the camera body AF-error, Part 3 is about the amateurish way...
(This is a worth read of article, although the read is likely a little tedious process.) The Part 1 paragraph summary: for examples, Nikkor 35mm f2 D in the...
The essence - the off-axis beams of light and the higher obliquities when maximal aperture was same, but a shorter focal-length lens is usually with larger...
Examples for the macro lenses and AF-errors Nikkor AF-S 105mm f2.8G Macro, Nikkor AF-S 60 mm f2.8G Macro, Nikkor AF 60mm f2.8D Macro, Canon EF 100mm f2.8L...
The Pentax UFO only stained the k5? NO, the k7 was once in likewise! The k7 image sensor came from Samsung, but the k5 was adopting Sony image sensor....
Hello...I am new to the group and have just purchased a Pentax SMC Takumar 500m f4.5 cannon. I am looking for literature/manual on the lens and any technical...
... Yes, extension tube can be used to convert the lens into macro lens, but with the long focal of your lens, I don't think it is very practical to do so. On...
Thanks for the reply. I am planning to use the lens on a Canon 50D (1.6 crop) which should help the corner problem. I only want to improve close focus to...
