Anastigmat

Odorless mineral spirits works well, but may require several cleanings. Sometimes there is just too much oil.  Acetone does not work as well as it tends to vaporize too quickly, before it can...

Every lens is slightly different.  Some have helicoids that are hidden under several layers of lens parts and are difficult to get to. Others are pretty exposed and you can even see them by looking...

There is no question that FF is better than APS-C, because the sensor is larger. Larger sensors allow either a lot more pixels of the same size, slightly more but nevertheless bigger pixels, or the...

If Pentax had used the Philips/Dalsa 6mp sensor and brought out the FF for $6k to $7K, it might have ended up in the same trash heap as Contax N Digital. Instead it released the *ist D and the rest...

Did the bikini model take off her skin colored suit and reveal that she is really a bear in disguise?

It is all quite simple. The future of DSLR photography is FF, and the future is now. The APS-C sensor will dominate the mirrorless camera market, and the future of micro 4/3 is in doubt.  Olympus...

That is a tough one.  Pentax will probably not have a full frame for another 3 years, if ever. However, if I were to tell you that, and Pentax surprises everyone with a full frame, then I will...

DXO is meaningless. I use Canon, Nikon and Pentax cameras. Can't accuse me of bias.

DXO is meaningless. I use Canon, Nikon and Pentax cameras. Can't accuse me of bias.

If you shoot landscapes, you generally want maximum depth of field. If you stop in down to f/11, then...

DXO is meaningless. I use Canon, Nikon and Pentax cameras. Can't accuse me of bias.

If you shoot landscapes, you generally want maximum depth of field. If you stop the lens down to f/11, then...

They were probably talking about binning, or combining signals from several pixels into one. That is of course not as good as having a single large pixel the same size as those small ones...

Sounds like you are the angry one. People have the right to dislike this camera. Whether they have seen one in person or used one is not the point. If a camera looks so ugly that someone does not...

It wasn't an experiment, just a cheap way to go mirrorless. It never had the small size advantage of a mirrorless camera, only the inferior AF and inferior viewfinder compared to the SLR design....

There are quite a few good ones in this category.  The Tokina 90mm f/2.5 is probably the sharpest and it is available in KA mount with the contacts.  The Vivitar series 1 is the same lens but it...

I would say crazy but stupid. The OM-D has a puny sensor. Its low light performance sucks.  I would seriously consider a Canon 6D instead of the OM-D or the K5. It is only a few hundred dollars...

Sad Joe, the D600 has its flaws too. Its body is mainly plastic, and definitely not in the same league as the D700 body in build quality. Nikon has more room to slot the D600 below the D800, and...

Sad Joe, the D600 has its flaws too. Its body is mainly plastic, and definitely not in the same league as the D700 body in build quality. Nikon has more room to slot the D600 below the D800, and...

If it is true, then it won't be a surprise. This lens is expensive, so the market is small to begin with. Since many high end Pentax users appeared to have switched to Canon or Nikon because they...

It is not funny if the camera division lost $170 million dollars. That is certainly a sign that Olympus is not making products that the consumers want. Consumers do not want DSLR cameras with 4/3...

Whether Olympus continues to make DSLR cameras or not is rather irrelevant. They have practically stopped introducing new models, and frankly, their DSLRs are simply not competitive. The sensors...