Hey guys, I'm hoping y'all can help me out here. I got a 100 f/2.8 Series E for $70 that looks and feels new except for this defect/fungus/oil on the inside of the front element. I'm on the fence about returning it since it was only $70 and it's seeming like such a good lens otherwise, but I've never seen this before.
To the naked eye it looks like a little oil slick, but looking at the photo leaves me with no idea.
OffTrail wrote:
Hey guys, I'm hoping y'all can help me out here. I got a 100 f/2.8 Series E for $70 that looks and feels new except for this defect/fungus/oil on the inside of the front element. I'm on the fence about returning it since it was only $70 and it's seeming like such a good lens otherwise, but I've never seen this before.
kwoodard wrote:
Pretty sure there are some guides online to open that lens up. Some ammonia or nose oil will wipe that off.
Yeah, I actually found a real in-depth repair post with a video right after I posted (link, if anyone cares). I didn't think it'd be as straight-forward as it is, but it seems there's not much to a budget four-element lens. Who knew?!
Ken Hill wrote:
Jay,I really like the last capture!
Colin really nice Hong Cong capture I like the PANO's.
Here is a set from early today at an interesting site, the Empire Mine, an iron mine, which is located due south of Negaunee/Ishpeming Michigan. Long thought by conspiracy theorists to be the secret site of the White House/government operations in the event of a nuclear attack.
A 13 shot PANO with the NOCT. The "mountain" in the rear is not a mountain at all. They are tailings from the iron mine which is miles deep. The shot is a 180 degrees and from left to right about a 3/4 mile ( 1 km) distance.
The last is a pyramid that Robin's dad built early on in his career....Show more →
Some funky stitching going on here Ken. Was this LR? Thought it would do a better job.
How much overlap do you leave? I tend to go for 1/3 of the previous frame in the new one.
Sometimes less is more. Would be interesting to remove some of the frames and re-stitch to see if it can handle the utility wires.
DeltaSigma wrote:
Some funky stitching going on here Ken. Was this LR? Thought it would do a better job.
How much overlap do you leave? I tend to go for 1/3 of the previous frame in the new one.
Sometimes less is more. Would be interesting to remove some of the frames and re-stitch to see if it can handle the utility wires.
Colin
Colin, no to the question on a lot of overlap. Perhaps 15%. Was roadside and whats not shown was the number of mine trucks passing on my left. Waiting for them to pass was a PITA.
I do think the major factor was the small laptop I used to create the PANO. Looked quite good until posted. So to answer your question with 20/20 hindsight I don't think I should have tackled this PANO so aggressively ie: smaller sections, then combined the sections.
At any rate the awesome size of the Empire Iron mine was what I was trying to capture.
Send it back if it wasn't mentioned in the description.
OffTrail wrote:
Hey guys, I'm hoping y'all can help me out here. I got a 100 f/2.8 Series E for $70 that looks and feels new except for this defect/fungus/oil on the inside of the front element. I'm on the fence about returning it since it was only $70 and it's seeming like such a good lens otherwise, but I've never seen this before.
Another 50/2 image from Victoria Peak.
This one was taken later after the blue hour (~5 mins) had evapourated so slightly different processing this time.
