HELP!! What is this please

pixbyjohn

Hi , can anyone help me please. There is a circle with a dot on these 2 photos. What are they. Photos taken before and after these shots don't have this mark. Camera is D700 with 70 to 200 lens. I didn't have lens hood attached.
John

Fajitas!

Was it wet out?

Could a rain drop have landed on either the front or rear element?

Quackles

Are the images cropped? Does the circle move? My guess would have been a water drop on the lens otherwise.

pixbyjohn

Yes Fajitas, there was a hint of rain all right. Maybe front element cos I didn't have lens off. Thanks

Fajitas!

Has it appeared on any shots since?

pixbyjohn

Quackles wrote: »

Are the images cropped? Does the circle move? My guess would have been a water drop on the lens otherwise.

Hi Quackles, looking at the original uncropped versions and mark is in same place on all photos, maybe Fajitas and your findings are correct. No Fajitas it didn't appear on lots more taken afterwards that day. Thanks

Fajitas!

It's strange alright. You'd think it'd be on more than two photographs.

Tbh, it dosn't look like raindrops I've seen before, but that dosn't mean anything

smelltheglove

Doesnt look like rain to me either although I havent a clue what it could be....

Fajitas!

Well my reasoning behind thinking it was on the rear element is it's a lot bigger than a raindrop would appear if on the front element.

Just hope it dosn't happen again, I guess... Otherwise, over to the paranormal forum :pac:

Mycroft H

Fajitas! wrote: »

Well my reasoning behind thinking it was on the rear element is it's a lot bigger than a raindrop would appear if on the front element.

Just hope it dosn't happen again, I guess... Otherwise, over to the paranormal forum :pac:

if my reasoning is correct it couldnt be rain unless a tiny arpeture was been used, thus the plain of focus would have been extended from the very front element so anything there would have been in focus, eg raindrop

BUT it would have to be a tiny arpeture eg f32 or more

Sooooo, I dont think its a raindrop, maybe something expermantal in the irish air corps (unlikely, i know)

TanG411

It looks like the Ben Sherman logo :pac:

Really difficult to tell whether or not it's a raindrop though.

Fajitas!

landyman wrote: »

if my reasoning is correct it couldnt be rain unless a tiny arpeture was been used, thus the plain of focus would have been extended from the very front element so anything there would have been in focus, eg raindrop

BUT it would have to be a tiny arpeture eg f32 or more

Sooooo, I dont think its a raindrop, maybe something expermantal in the irish air corps (unlikely, i know)

Tbh, if on an auto mode, shooting at the sky, it could have been quite a small aperture. I hadn't thought of that before though.

Quackles

Image properties say f8

Ghost Train

would guess its something on the sensor maybe, you should take a shot at a high apature value eg. f22, pointing at white or light coloured surface, not in focus, to see if it is the sensor, but then given the strange double shape maybe it is something on the lens

Borderfox

Could be a drop of oil from the mirror, seen it on mk3s

Have a look at the left hand corner of this shot at original size and you can see what oil looks like

chezzer

Ouch !!

Is oil easy to clean ? will a wet clean sort it out ?

Borderfox

Wet clean will sort it probably better off left to pro cleaners

democrates

OP I've a distant memory of seeing a shape up there before, could it be the sun?

pixbyjohn

Ghost Train wrote: »

would guess its something on the sensor maybe, you should take a shot at a high apature value eg. f22, pointing at white or light coloured surface, not in focus, to see if it is the sensor, but then given the strange double shape maybe it is something on the lens

Thanks everybody for all your theories. Today I took a look at the sensor and saw what appeared to be a shiny speck on it. Gave it a light blow with a rocket cleaner and it now seems perfect. Funny thing is that it was not on all my photos taken on Sunday. I wonder was it the fact that I was pointing camera in the sky most of the day and a minute particle dropped on to the sensor from inside somewhere !!! All seems well again.
Thank you all again.
John

chezzer

pixbyjohn wrote: »

Thanks everybody for all your theories. Today I took a look at the sensor and saw what appeared to be a shiny speck on it. Gave it a light blow with a rocket cleaner and it now seems perfect. Funny thing is that it was not on all my photos taken on Sunday. I wonder was it the fact that I was pointing camera in the sky most of the day and a minute particle dropped on to the sensor from inside somewhere !!! All seems well again.
Thank you all again.
John

could be that yes ... well it's fixed and that's the main thing !

Calina

Aperture makes a difference for things like that sometimes - if you were above f8 or something stuff like that tends to be more visible than at the wider apertures.

I'm glad you found it because speaking from a lot of experience I would swear it definitely wasn't water or anything liquid.