was_a_guru

I recently purchased a new lens (Tamron 18-400mm). I would like to do some comparison shots with my current lenses (Nikon 18-55 & 70-300), as well as with the new lens using several filters that came with it (as it was a kit purchase).

To do this I would be using a tripod and taking pictures at (as close as possible) focal points of the same subjects with the different lenses, and then with then new lens both with and without the new filters (they are not name brand filters (Altura), and have mixed reviews).

I would then compare the taken photos with Photoshop and/or Lightroom (enlarged) to see what differences I can discern.

My question is since these are comparisons what mode would be best to use - totally Auto, Program, Aperture, or Manual. I usually shoot in aperture mode for most shots.

Any comments, suggestions would be helpful. Thanks.

rjaywallace Loc: Wisconsin

What is the purpose and intended audience for your test? What sort of subject matter are you planning to shoot? Many folks here will tell you to shoot in Manual mode. That may not be necessary if you are uncomfortable shooting in Manual or if the purpose of the test is very informal. If the subject is static, like a wall or a piece of architectural detail, you might choose f/8 or f/11. If the subject is moving you probably should use Shutter Priority mode and ensure that the subject is very well lit so that the camera will use a moderately high aperture.

imagemeister Loc: mid east Florida

Use a HIGHLY detailed subject and let the camera focus in live view. Use manual with auto ISO so you keep the aperture and SS constant. I assume your camera can do all this as you do not say what you have ....?? !

Good luck ...

..

was_a_guru

Thanks for the replies. I have a Nikon D7500 and am comfortable with shooting in all modes. This is an informal test and I have a place in mind with a variety of possible subjects ranging from landscape with some distant hills to structures with some fairly detailed features. There is a park bench so I can set up the tripod, set everything out, sit down and make notes as I go along. I'm looking forward to giving it a try.

I've even jury rigged a good LCD screen hood. It's a collapsible rubber lens hood that I got along with another purchase I made. Don't need it as a lens hood, but it works perfectly to shade (hand held of course) the LCD when I'm in bright sunlight. Lot less $$ than the one I looked at from Hoodman. :)

Thanks again.

Joe Blow

I would suggest using Aperture Priority. Set your ISO to something that will give your Shutter a 500 range and shoot JPG fine. (You don't need the processable RAW, just the Out of Camera JPG) Center on the one subject and shoot two shots at each stop you are testing. Change your zoom and then test again at each f stop.

Besides the notes you take, you can also refer to the EXIF for data.