Recent content by Brightstone

i think it's closed now

i think it's from both

there is a third-party tamron adaptall mount for Sony A.

have you tried the 'sensor clean' mode with an air blower? havenot used a KX, but i think Pentax camera after K20D should come with this. compared with my last dusty sensor, it does not look awful.

i bought a 67mm Hoya MC UV filter from the Ebay about 2 years ago. the packing was rough, and the print of front cover was in such a poor quality. i did not even bother trying it, and contact the seller to return it. eventually i got the full refund, but paid for the return postage. i bought a...

Do you all use the AF mode? over 50% are usable or more?

the first one which my friend tried in the store was focus-shifting, not even sharp at f/4. Second one was just like a different lens. it might not be an issue on newer bodies, but unfortunately my friend's got a 5D mark 1

From the comments of a friend who owned both lenses for a short period of time, the Sigma 50/1.4 is obvious better than Canon 50/1.4 at wide open, upto 2.8. can not tell much difference from f/4. Sigma 50mm was observed the edge quality drop. in addition, you need to try it in store to find a...

it's located in China. i would not be surprised that you will get a 32 GB card, but it should be one made by Sandisk...

dust is not an issue to image quality. how coincident are they in the same position. are you sure it's not the reflection of certain area or screws? it particularly happens to the lenses from the same make.

i can not believe you described the same lens as mine. mine in pentax mount is a cracking one , very sharp in 24-50mm @2.8, slightly drops in sharpness in 50-60mm@2.8, but still acceptable. i did some research against Sigma 24-70mm f2.8 before i bought it. there were lots of positive reviews on...

ordered a nd filter before, on problem. they seem stock some alternative photographic equipments at economic prices.

why sony nex 3/5 not considered? Larger sensor...

I bought the same one for my NEX5, which works greatly with 1680x1080p HD video. speed wise, it's slower than Sandisk top range cards, but Transend is incredibly cheaper.

I am a big fan for FF. Image quality is the king