Again -- Tam 150-600

wev

wev

Senior Member
Contributor
I have been getting some 'this just doesn't feel right' vibes from the Tam, but it really showed today -- at least I think it is the lens, but may be the conditions/settings/something else.

I took the three pics below as a burst. The yellow squash flower was very brightly lit, so I tried 1/320 and fstop f22 to see what I would get. ISO was on auto. The exif is identical for each image. I only resized/compressed them for posting.

Flower1.jpgFlower2.jpgFlower3.jpg

I then tried going the other way -- 1/800 at f9 and got the opposite pattern, albeit less drastically. Again, a three shot burst and identical exif

Flower4.jpgFlower5.jpgFlower6.jpg

Lens? Inappropriate settings? Body?
 
N

nickt

Senior Member
It sure looks like a problem. Was this sunlight? I've seen florescent and led lighting do crazy exposure things. If this was sunlight or incandescent light, then something is looks broke.
 
wev

wev

Senior Member
Contributor
It was shot in full sun. It may be the body overloaded by the light. I tried a different body and had no issue, but I did not have anything to shoot of a like nature. I'll see if I can do a controlled test tomorrow at the college.
 
R

RON_RIP

Senior Member
I have had trouble with some little yellow flowers in the past that have a lot of luminenence. Would not be too quick to blame the lens. You should run more field tests, also shoot them with another lens for further comparison.
 
T

TedG954

Senior Member
I'd try shooting in the AUTO mode, allowing the camera to make all the decisions. (As well as trying a different lens under the same conditions.) If the photos are all good, it may be settings. If they're still bad..........
 
S

salukfan111

Senior Member
wev said:
I have been getting some 'this just doesn't feel right' vibes from the Tam, but it really showed today -- at least I think it is the lens, but may be the conditions/settings/something else.

I took the three pics below as a burst. The yellow squash flower was very brightly lit, so I tried 1/320 and fstop f22 to see what I would get. ISO was on auto. The exif is identical for each image. I only resized/compressed them for posting.

View attachment 225066View attachment 225067View attachment 225068

I then tried going the other way -- 1/800 at f9 and got the opposite pattern, albeit less drastically. Again, a three shot burst and identical exif

View attachment 225069View attachment 225070View attachment 225071

Lens? Inappropriate settings? Body?
Click to expand...
It looks like the exposure was being set differently each time. Were you in Manual Mode auto iso (can you even do that on D5300?). I don't think it would have anything to do with your len.
 
D

Don Kuykendall_RIP

RIP :(
salukfan111 said:
It looks like the exposure was being set differently each time. Were you in Manual Mode auto iso (can you even do that on D5300?). I don't think it would have anything to do with your len.
Click to expand...


The EXIF is listed for each photo and the settings are ALL the same including ISO. Just hover your mouse over the photo and you can see what the setting were.
 
wev

wev

Senior Member
Contributor
salukfan111 said:
It looks like the exposure was being set differently each time. Were you in Manual Mode auto iso (can you even do that on D5300?). I don't think it would have anything to do with your len.
Click to expand...

It is most definitely the lens -- this and the last three times. It is now on its way back to Tamron after a long and detailed talk with their support supervisor.
 
wev

wev

Senior Member
Contributor
To catch folks up, the aperture is failing (ala the pictures above) and the auto focus is now completely shot. The lens was tried on four bodies (5300, 7200, 500) with the same results.
 
D

Don Kuykendall_RIP

RIP :(
wev said:
To catch folks up, the aperture is failing (ala the pictures above) and the auto focus is now completely shot. The lens was tried on four bodies (5300, 7200, 500) with the same results.
Click to expand...

If I remember correctly it has been back in for service 2 other times for the same or similar problems? Maybe they will just replace it this time.
 
M

mikew_RIP

Senior Member
I had a new focus motor in mine when they where trying to sort the focus freeze,if they do that check it really well mine was never as sharp after that,hope all goes well as i have been there.
 
C

captain birdseye

Senior Member
Good old Tamron, they never fail to disappoint.
The 150-600 has got to be one of the most unreliable lens on the market atm, the only thing you can rely on with it is the fact that it will need returning at some point for repair/adjustment.
It would be interesting to see what percentage of tamron 150-600 users (nikon mount) have had problems as almost every owner of this lens that I know locally has had to return it at least once.
 
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Danno

Danno

Senior Member
Hope you get it sorted out WEV. As many times as they have had to crack that one open you would think they would replace it.
 
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