Just Bought a New Manual Lens

[c0zz]

Just bought a Pentacon Auto 2.8 135mm

The seller said it has some mist in the front element and needs cleaning, Is this a major problem could it be easily fixed or fixed at all?

Bought the lens for £5.50 so its not breaking the bank.

Just wanted some opinions, just ordered my M42 to Eos adapter so looking to buy more cheap glass just to experiment.

 

[HoppyUK]

Those old lenses are pretty simple. I used to take mine apart just to see how it worked - used a pair of dividers to unscrew the retaining ring at the front and worked in from there.

Give it a go - you've got nothing to lose.

 

[AndyWest]

Is the aperture going to work if it's auto? Do you have a manual setting?

 

[c0zz]

I think there is a aperture ring aswell, Not a big loss if it doesn't i've looked at other auto lenses and they say they can be stopped up and down so i'm guessing this will be the same.

 

[HoppyUK]

I think there is a aperture ring aswell, Not a big loss if it doesn't i've looked at other auto lenses and they say they can be stopped up and down so i'm guessing this will be the same.

The normal status of the lens aperture is wide open. It is stopped down to the f/number by pressing the pin on the rear, which the camera would normally do during the exposure. Of course, the EOS won't.

The lens may have an auto/manual switch on the side by the lens mount, which will stop the aperture down to the f/number set. If you haven't got this, you need an adapter that will depress the pin at all times, otherwise you will only be able to take pictures wide open.

The technique is to focus and compose at brightest aperture, then meter on Av at the f/number you want, which will automatically set the shutter speed, take picture