Camera help needed

cleo43 wrote:

Digital cameras made in the last 15 years all have built-in UV filters on the sensor.

You mean 'anti-aliasing' filter ?

My full frame 36mp Sony A7r does not have an anti-aliasing filter and that gives it sharper images .

Digital cameras made in the last 15 years all have built-in UV filters on the sensor.

You mean 'anti-aliasing' filter ?

scbwr wrote:

mabynack wrote:
You probably need to clean the autofocus sensor. Also try cleaning your lenses. I always keep a UV filter on my lenses and replace them about once a year. It's a lot cheaper to replace the filter than the lens.

Why do you need to replace the UV filter?? Isn't taking them off periodically and cleaning all you need to do. I use UV filters on my lenses but certainly don't need to replace them. I'm just curious...don't mean to imply anything but that.

yep, basically I put a new UV or clear filter on a new lens, just blow the dust off the lens,I do NOT wipe it, and that filter stays on indefinitely unless of course a Pol. filter is needed. I certainly don't remove the filter to clean the lens or inner surface of the filter as that shouldn't be needed. if the UV filter needs replacing you must be cleaning with sandpaper?????? I am not one who subscribes to the school that a clear/UV filter will degrade the image to any meaningful degree.
and do NOT try cleaning the sensor yourself, have a professional do it.
bumpy

If you think your photos are being over exposed you may want to make sure you dont have some sort of exposure compensation turned on. I'm guessing not because over exposure would just turn everything too bright and not out of focus

coolmom42 wrote:
Digital cameras made in the last 15 years all have built-in UV filters on the sensor. There is no need for an external UV filter. It is another source of optical degradation & chromatic aberration. The only possible purpose it serves is protecting the front lens element. That can be done very effectively by using the lens hood turned the right way.

This is why I said it's personal preference. No one uses a UV filter for the original purpose on a digital camera - they ONLY use it for the protection of the lens.

Some folks believe that putting a UV filter on the lens protects the lens and is worth any degradation that might occur. Others believe that a lens hood, proper handling, etc. will better protect the lens without any degradation.

Those two camps tend to be VERY split.

toedtoes wrote:

scbwr wrote:

mabynack wrote:
You probably need to clean the autofocus sensor. Also try cleaning your lenses. I always keep a UV filter on my lenses and replace them about once a year. It's a lot cheaper to replace the filter than the lens.

Why do you need to replace the UV filter?? Isn't taking them off periodically and cleaning all you need to do. I use UV filters on my lenses but certainly don't need to replace them. I'm just curious...don't mean to imply anything but that.

It's personal preference. Could be the thought that the UV filter becomes scratched with time and it's better to replace it, or that after X number of cleanings, it gets a bit fuzzy, etc., that additional cleaning can't correct. There are more opinions on UV filters than there are on dogs in campgrounds.

Digital cameras made in the last 15 years all have built-in UV filters on the sensor. There is no need for an external UV filter. It is another source of optical degradation & chromatic aberration. The only possible purpose it serves is protecting the front lens element. That can be done very effectively by using the lens hood turned the right way.

monkey44 wrote:
Might be the lens is not turned on AF -- if you accidentally flip the lens MF switch, it will not focus and all your photos will be blurred.

One other issue: Check your contacts - lens to camera. If those get dirty (and they do over time) a little contact cleaning will do wonders for the communication between lens and camera.

This.

Hello Bob! Were you able to fix your problem? If so, what was the fix?

WyoTraveler wrote:

the bear II wrote:
I had a professional video business for over 30 years. About every 3-5 years my video cameras would begin to have what looked like a blur to the videos. I tried having the cameras cleaned by the factory but the problem wouldn't go away. This happened with 3 different cameras over the years. I ended up replacing the cameras.

My guess is the sensors/electronics get out of alignment due to age and use.

However, Cannon replaced everything in mine for free. It is hetter than my new Minolta camera now.

New Minolta ? Sony purchased Minolta about ten years ago.

Might be the lens is not turned on AF -- if you accidentally flip the lens MF switch, it will not focus and all your photos will be blurred.

One other issue: Check your contacts - lens to camera. If those get dirty (and they do over time) a little contact cleaning will do wonders for the communication between lens and camera.