KentG

Ended up passing on it. Going to wait for something else. Kent Gittings

As someone who once did a lot of motorsports photography I see lots of good images in your gallery. A couple of things. If you are getting subjects with a lot of air you need perspective, which ...

Maybe the former but not the later. Obviously poor training and I have done some of that in the past. Courts usually give LEO the benefit of doubt in cases where they perceived a threat that may or...

I sold all my big Tamron AD2 glass on the Pentax users forum in only a couple of weeks. Of course they all had PK/A adapter on them also. While I have sometimes bought lenses on eBay I won't sell ...

Ditto, especially the Sigma 100-300/4. Mine was also a Canon and I had to buy a camera to use it (60D) Still have both inspite of having the K-1 and the Pentax 150-450. Primes and the 200/2.8 are ...

Yeah and what happened to HP "the worldwide leader in digital imaging"? I guess they got lost along the way. Kent Gittings

If the elongated star images at the edge of the field all point towards the center of the image that is not tracking error. Its an optical aberration known as coma although in this case its caused ...

Better solution if you have an Android smartphone or tablet is the program DSLR Remote Plus. The K-01 supports the same Pentax IR remotes as most of the other Pentax bodies so you can use one of ...

Anybody have an opinions about this lens? I have a chance to buy one for less than $300 but don't know much about it. While I have a K-mount zoom in this APS-C range (Tamron 10-24) I don't have ...

Just make sure you don't put an eyepiece in the telescope or it will burn up and fracture the optical glass. Old telescopes generally came with solar projection screens.

If I had my choice I would be in the Pacific off the NW coast because the sun will rise in eclipse and I think the image of a black sun rising is something few will ever image at all. About as...

They are lovely in their own world. I have been studying and shooting them for many decades. And just remember if there no spiders the other insects we don't like would have taken over the world...

I agree. Like all F1.2 and faster lens they tend to only be well corrected in the center wide open then get gradually better as they are stopped down just like other well regarded 50mm lenses. On ...

Anybody happen to know if regular DSLR cameras generate full 256 shade B&W on every pixel when shooting B&W? Meaning no Bayer interpolation like in color mode. Or does it just translate the color ...

Sadly missed. Kent Gittings

That has little to do with it. Until Canon started making CaF2 and other non-radioactive doped glass lenses were developed, Thorium oxide doped glass was about the only ED glass known.

I bought one to use on my then new K-1 last year when they had the sale. Great lens and I use it mainly as a general purpose lens due to the deservedly legendary sharpness of the optical design ...

Bokeh is kind of terrible, however. Kent Gittings

I do it both ways. My K-1/K-5IIs shoots with the Pentax 150-450 and my Canon 60D shoots with the Sigma 100-300/4 EX + 1.4x. Kent Gittings

No relation between the two actually. A flash card works pretty much exactly like a HD or SSD card. Meaning once it is full and used it start back at the first open memory location. And if it has ...