Canon 50mm - Can you have a look please??

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Dylanlewis2000

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Dylan
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OK so my Lens went in for repair to Jessops a few months ago. Its been an on going saga. The lens came back and it was out massivly, and i took it back for a re-repair. The second time it came back full of dust, so it went back for a re-re repair. Its back now but im not sure if its acceptable. It took a while for me to find this inital lens as i spent a while in the shop testing a few models to make sure i found the sharpest they had.

The lens came back to me on Friday. It still has one or two specs of dust inside.

Can you cast your eyes over these pictures, are they acceptable? The left hand side seems to be fairly soft, however it deoes sharpen up at F4

This is the shot that i have taken.
Canon50mm21November2011.jpg


This is the Left Hand Side
LHSide.jpg


This is the Right Hand Side
rhside.jpg


Middle
middle.jpg


Top
top.jpg


Bottom
bottom.jpg


What do you think? Acceptable?
 
Seems alright to me. I have the same problem/effect on my nifty fifty. I think it may just be due to shooting at low apertures, however mine doesn't seem as severe as yours.

If you are weary about anything, just take it back to Jessops and they'll help you out :)
 
Ive been back 4 times now
 
Take it back to them, say that you are unimpressed with their product performance and customer satisfaction. Get your money back and buy one from Amazon!
 
Was the camera exactly perpendicular to the wall? How far away from the wall was the camera? You may only have 10mm to play with on the DoF at 1/2m away, so it would not take too much of a slight angle to throw the left or right side out of focus.

Overall, I'd say the shots look about on the mark for the nifty 50.
 
Furtim said:
Was the camera exactly perpendicular to the wall? How far away from the wall was the camera? You may only have 10mm to play with on the DoF at 1/2m away, so it would not take too much of a slight angle to throw the left or right side out of focus..
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Doesn't look to be exactly perpendicular to me when you look at the first picture, but then again, I haven't got my glasses with me :D ...


Canon50mm21November2011.jpg



If it wasn't, I would try to take the shot again, making sure you are head on to the wall.

If it was, then I don't think it's right and I'd be taking it back along with the photos you've taken to show the problem...
 
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Well good news... I went to the shop earlier and asked to speak with the manager. The main manager was fortunately not in (its like talking to a brick wall with him) and I spoke to an acting manager. He understood my frustration and changed it on the spot.

It was a bit dark when I got home so I haven't had a good change to try it yet.

I am just happy I have a new one.
 
ok so this is with the new lens

Taken on a tripod
f1.8
Canon50mm_1.jpg


f2.2
Canon50mm_2.jpg


f2.5
Canon50mm_3.jpg


f2.8
Canon50mm_4.jpg


f3.5
Canon50mm_5.jpg


f4.0
Canon50mm_6.jpg
 
The above are 100% crops, right? At such extreme closeups it is always easy to misalign the lens to the plane of the subject giving rise to selective focus - is there anything tack sharp at all? I would try outdoors and then recompose the same shot to each corner.
There is a risk the lens is front / back focusing. In fact 1.8 version is notoriously bad at that and perhaps you should have tried to upgrade to 1.4 version (with mandatory hood staying on at all times!).
 
With our local jessops they dont stock anything. It would take them 28 days to get a new one in. Im tempted to talk this one back too. I cant understand how a brand new lens can be so bad.
 
I *really* would look at the setup for your test shots - at f1.8 and close up your depth of field is going to be very, very shallow - so if the sensor of the camera is not exactly aligned to the same plane as the subject, you will get results similar to those you are posting.

It could be focussing issues, but so many exchanges and repairs, personally, I'd be looking more at the technique rather than the lens.
 
To the OP, shoot a more distant target. Too many other things going on with close ups, namely a good chance of innacurate focusing with that lens, and the lack of edge sharpness is likely field curvature as much as anything else, which is greatly reduced with distance.
 
Noted. I will do a proper test tomorrow if i have time after work, but these were just quick shots that i did a few minutes ago. I was just a bit disapointed thats all.
 
Dylanlewis2000 said:
Noted. I will do a proper test tomorrow if i have time after work, but these were just quick shots that i did a few minutes ago. I was just a bit disapointed thats all.
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If you use inapproriate tests, then you will be. When you are disappointed by so many different lenses, you begin to think maybe the lens isn't the problem, but the way it's being assessed.

Use it how it's supposed to be used. If you did those same tests with a £1200 50mm L you'd be disappointed too. That's the kind of thing you might try with a macro.
 
HoppyUK said:
If you use inapproriate tests, then you will be. When you are disappointed by so many different lenses, you begin to think maybe the lens isn't the problem, but the way it's being assessed.

Use it how it's supposed to be used. If you did those same tests with a £1200 50mm L you'd be disappointed too. That's the kind of thing you might try with a macro.
Click to expand...

I tend to agree with HoppyUK here,

however I have used 50mm for copying documents (with flash setup obviously), and the results were pretty amazing, although I was being sensible and stopped it down slightly.

The L - I believe has fairly soft corners - a price to pay for f/1.2.
 
Go out and take some real world pics, people obsess over charts and taking photographs of brick walls too much. Chances are there is nothing wrong with either lens!

Sometimes I think people take more shots of graphs, charts and walls than actually taking proper photographs!

I'm sure you'll be delighted with what you come away with.
 
odd jim said:
Go out and take some real world pics, people obsess over charts and taking photographs of brick walls too much. Chances are there is nothing wrong with either lens!

Sometimes I think people take more shots of graphs, charts and walls than actually taking proper photographs!

I'm sure you'll be delighted with what you come away with.
Click to expand...

I'd agree with that. Take some real world shots and if you still believe it is soft, then look at taking it back. But shooting it against a brick wall when it is not 100% perpendicular isn't going to show up anything.
 
agree with the above, however Id be demanding a refund after all this hassle to be honest.

Am I the only one that dislikes Jessops because as far as I'm concerned they are the McDonalds of the camera world :-/

I wouldn't be put off buying new branded items from them but certainly would never entertain them repairing anything of mine.
 
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